CRUDE OIL, SOUR

SECTION 2: Hazards identification

HMIS Classification This material is considered to be hazardous according to regulatory guidelines (see (M)SDS Section 15). PHYSICAL/CHEMICAL EFFECTS FLAMMABLE. Material can release vapours that readily form flammable mixtures. Vapour accumulation could flash and/or explode if ignited. Material can accumulate static charges which may cause an ignition.

Potential health effects

Very toxic by inhalation. Irritating to skin. Danger of serious irreversible effects by a single exposure. If swallowed, may be aspirated and cause lung damage. Under conditions of poor personal hygiene and prolonged repeated contact, some polycyclic aromatic compounds (PACs) have been suspected as a cause of skin cancer in humans. Hydrogen sulphide, a highly toxic gas, is expected to be present. Signs and symptoms of overexposure to hydrogen sulphide include respiratory and eye irritation, dizziness, nausea, coughing, a sensation of dryness and pain in the nose, and loss of consciousness. Odour does not provide a reliable indicator of the presence of hazardous levels in the atmosphere. May be irritating to the eyes, nose, throat, and lungs. May cause cancer. Aliphatic hydrocarbon gases may build up in confined spaces and may cause dizziness, light-headedness, headache, nausea and loss of co-ordination. Continued inhalation may result in narcosis, unconsciousness, and possibly lead to death. May cause central nervous system depression. High-pressure injection under skin may cause serious damage. Exposure to benzene is associated with cancer (acute myeloid leukaemia and myelodysplastic syndrome), damage to the blood-producing system, and serious blood disorders (see Section 11). NFPA Hazard ID: Health: 2 Flammability: 3 Reactivity: 0 HMIS Hazard ID: Health: 2* Flammability: 3 Reactivity: 0 NOTE: This material should not be used for any other purpose than the intended use in Section 1 without expert advice. Health studies have shown that chemical exposure may cause potential human health risks which may vary from person to person. FIRST AID MEASURES INHALATION Immediately remove from further exposure. Get immediate medical assistance. For those providing assistance, avoid exposure to yourself or others. Use adequate respiratory protection. Give supplemental oxygen, if available. If breathing has stopped, assist ventilation with a mechanical device. SKIN CONTACT Remove contaminated clothing. Dry wipe exposed skin and cleanse with waterless hand cleaner and follow by washing thoroughly with soap and water. For those providing assistance, avoid further skin contact to yourself or others. Wear impervious gloves. Launder contaminated clothing separately before reuse. Discard contaminated articles that cannot be laundered. If product is injected into or under the skin, or into any part of the body, regardless of the appearance of the wound or its size, the individual should be evaluated immediately by a physician as a surgical emergency. Even though initial symptoms from high pressure injection may be minimal or absent, early surgical treatment within the first few hours may significantly reduce the ultimate extent of injury. For hot product: Immediately immerse in or flush affected area with large amounts of cold water to dissipate heat. Cover with clean cotton sheeting or gauze and get prompt medical attention. EYE CONTACT Flush thoroughly with water for at least 15 minutes. Get medical assistance. INGESTION Seek immediate medical attention. Do not induce vomiting. NOTE TO PHYSICIAN If ingested, material may be aspirated into the lungs and cause chemical pneumonitis. Treat appropriately. This light hydrocarbon material, or a component, may be associated with cardiac sensitisation following very high exposures (well above occupational exposure limits) or with concurrent exposure to high stress levels or heart-stimulating substances like epinephrine. Administration of such substances should be avoided. FIRE FIGHTING MEASURES EXTINGUISHING MEDIA Appropriate Extinguishing Media: Use water fog, foam, dry chemical or carbon dioxide (CO2) to extinguish flames. Inappropriate Extinguishing Media: Straight streams of water FIRE FIGHTING Fire Fighting Instructions: Evacuate area. If a leak or spill has not ignited, use water spray to disperse the vapours and to protect personnel attempting to stop a leak. Prevent run-off from fire control or dilution from entering streams, sewers or drinking water supply. Fire-fighters should use standard protective equipment and in enclosed spaces, self-contained breathing apparatus (SCBA). Use water spray to cool fire exposed surfaces and to protect personnel. Unusual Fire Hazards: Highly flammable. Vapour is flammable and heavier than air. Vapour may travel across the ground and reach remote ignition sources, causing a flashback fire danger. Exposure to fire can generate toxic fumes. Hazardous material. Firefighters should consider protective equipment indicated in Hazardous Combustion Products: Hydrogen sulphide, Smoke, Fume, Sulphur oxides, Incomplete combustion products, Oxides of carbon FLAMMABILITY PROPERTIES Flash Point [Method]: -20°C (-4°F) - 35°C (95°F) [ASTM D-92] Flammable Limits (Approximate volume % in air) LEL 0.6 UEL 15 Autoignition Temperature: >400°C (752°F) ACCIDENTAL RELEASE MEASURES NOTIFICATION PROCEDURES In the event of a spill or accidental release, notify relevant authorities in accordance with all applicable regulations. PROTECTIVE MEASURES Avoid contact with spilled material. Warn or evacuate occupants in surrounding and downwind areas if required, due to toxicity or flammability of the material. See Section 5 for fire fighting information. See the Section for Significant Hazards. See Section 4 for First Aid Advice. See Section 8 for advice on the minimum requirements for personal protective equipment. Additional protective measures may be necessary, depending on the specific circumstances and/or the expert judgment of the emergency responders. For emergency responders Respiratory protection half-face or full-face respirator with filter(s) for organic vapor and, when applicable, H2S, or Self Contained Breathing Apparatus (SCBA) can be used depending on the size of spill and potential level of exposure. If the exposure cannot be completely characterized or an oxygen deficient atmosphere is possible or anticipated, SCBA is recommended. Chemical goggles are recommended if splashes or contact with eyes is possible. Work gloves that are resistant to aromatic hydrocarbons are recommended. If contact with hot product is possible or anticipated, gloves should be heat-resistant and thermally insulated. Note: gloves made of PVA are not water-resistant, and are not suitable for emergency use. Small spills normal antistatic work clothes are usually adequate. Large spills full body suit of chemical resistant, antistatic and, if necessary, heat resistant and thermal insulated material is recommended. SPILL MANAGEMENT Land Spill: Eliminate all ignition sources (no smoking, flares, sparks or flames in immediate area). Stop leak if you can do so without risk. All equipment used when handling the product must be grounded. Do not touch or walk through spilled material. Prevent entry into waterways, sewer, basements or confined areas. A vapour-suppressing foam may be used to reduce vapour. Large Spills: Water spray may reduce vapour, but may not prevent ignition in enclosed spaces. Water Spill: Stop leak if you can do so without risk. Eliminate sources of ignition. Warn other shipping. If the Flash Point exceeds the Ambient Temperature by 10 deg C or more, use containment booms and remove from the surface by skimming or with suitable absorbents when conditions permit. If the Flash Point does not exceed the Ambient Air Temperature by at least 10C, use booms as a barrier to protect shorelines and allow material to evaporate. Seek the advice of a specialist before using dispersants. Water spill and land spill recommendations are based on the most likely spill scenario for this material; however, geographic conditions, wind, temperature, (and in the case of a water spill) wave and current direction and speed may greatly influence the appropriate action to be taken. For this reason, local experts should be consulted. Note: Local regulations may prescribe or limit action to be taken. ENVIRONMENTAL PRECAUTIONS Use booms as a barrier to protect shorelines. Use containment booms when the ambient temperature is below the flash point of the material. Large Spills: Dyke far ahead of liquid spill for later recovery and disposal. Prevent entry into waterways, sewers, basements or confined areas. HANDLING AND STORAGE HANDLING H2S is present. Avoid all personal contact. Avoid contact with skin. Crude oils can contain trace levels of natural impurities including heavy metals, such as mercury, nickel or lead, as well as naturally occurring radioactive material. As the impurity content may concentrate during refining/processing, process operations, including equipment, materials and products should be evaluated to identify and manage any potential risks to health, safety or the environment or regulatory concerns. Prevent exposure to ignition sources, for example use non-sparking tools and explosion-proof equipment. Potentially toxic/irritating fumes/vapour may be evolved from heated or agitated material. Use only with adequate ventilation. Do not enter storage areas or confined spaces unless adequately ventilated. The toxic and olfactory (sense of smell) fatigue properties of hydrogen sulfide require that air monitoring alarms and respiratory protection be used where the concentration might be expected to reach a harmful level, such as in an enclosed space, heated transport vessel, or in a spill or leak situation. Material may contain trace amounts of naturally occurring radioactive material (NORM), which will accumulate in process equipment and storage vessels. Prevent small spills and leakage to avoid slip hazard. Material can accumulate static charges which may cause an electrical spark (ignition source). Use proper bonding and/or ground procedures. However, bonding and grounds may not eliminate the hazard from static accumulation. Consult local applicable standards for guidance. Additional references include American Petroleum Institute 2003 (Protection Against Ignitions Arising out of Static, Lightning and Stray Currents) or National Fire Protection Agency 77 (Recommended Practice on Static Electricity) or CENELEC CLC/TR 50404 (Electrostatics - Code of practice for the avoidance of hazards due to static electricity). Static Accumulator: This material is a static accumulator. A liquid is typically considered a nonconductive, static accumulator if its conductivity is below 100 pS/m (100x10E-12 Siemens per meter) and is considered a semiconductive, static accumulator if its conductivity is below 10,000 pS/m. Whether a liquid is nonconductive or semiconductive, the precautions are the same. A number of factors, for example liquid temperature, presence of contaminants, anti-static additives and filtration can greatly influence the conductivity of a liquid.

Storage

Ample fire water supply should be available. A fixed sprinkler/deluge system is recommended. The container choice, for example storage vessel, may effect static accumulation and dissipation. Keep container closed. Handle containers with care. Open slowly in order to control possible pressure release. Store in a cool, well-ventilated area. Outside or detached storage preferred. Storage containers should be earthed and bonded. Fixed storage containers, transfer containers and associated equipment should be grounded and bonded to prevent accumulation of static charge. EXPOSURE CONTROLS / PERSONAL PROTECTION Substance Name Form Limit/Standard Note Source BENZENE STEL 1 ppm Supplier BENZENE TWA 0.5 ppm Supplier BENZENE STEL 2.5 ppm Skin ACGIH BENZENE TWA 0.5 ppm Skin ACGIH CYCLOHEXANE TWA 100 ppm ACGIH ETHYL BENZENE TWA 20 ppm ACGIH HYDROGEN SULPHIDE STEL 14 mg/m3 10 ppm Supplier HYDROGEN SULPHIDE TWA 7 mg/m3 5 ppm Supplier HYDROGEN SULPHIDE STEL 5 ppm ACGIH HYDROGEN SULPHIDE TWA 1 ppm ACGIH n-Hexane TWA 50 ppm Skin ACGIH NAPHTHALENE STEL 15 ppm Skin ACGIH NAPHTHALENE TWA 10 ppm Skin ACGIH TOLUENE TWA 20 ppm ACGIH XYLENES STEL 150 ppm ACGIH XYLENES TWA 100 ppm ACGIH NOTE: Limits/standards shown for guidance only. Follow applicable regulations. ENGINEERING CONTROLS The level of protection and types of controls necessary will vary depending upon potential exposure conditions. Control measures to consider: Use explosion-proof ventilation equipment to stay below exposure limits. PERSONAL PROTECTION Personal protective equipment selections vary based on potential exposure conditions such as applications, handling practices, concentration and ventilation. Information on the selection of protective equipment for use with this material, as provided below, is based upon intended, normal usage. Respiratory Protection: If engineering controls do not maintain airborne contaminant concentrations at a level which is adequate to protect worker health, an approved respirator may be appropriate. Respirator selection, use, and maintenance must be in accordance with regulatory requirements, if applicable. Types of respirators to be considered for this material include: Positive-pressure, air-supplied respirator in areas where H2S vapours may accumulate. For high airborne concentrations, use an approved supplied-air respirator, operated in positive pressure mode. Supplied air respirators with an escape bottle may be appropriate when oxygen levels are inadequate, gas/vapour warning properties are poor, or if air purifying filter capacity/rating may be exceeded. Hand Protection: Any specific glove information provided is based on published literature and glove manufacturer data. Glove suitability and breakthrough time will differ depending on the specific use conditions. Contact the glove manufacturer for specific advice on glove selection and breakthrough times for your use conditions. Inspect and replace worn or damaged gloves. The types of gloves to be considered for this material include: Chemical resistant gloves are recommended. If contact with forearms is likely wear gauntlet style gloves. Eye Protection: Chemical goggles are recommended. Skin and Body Protection: Any specific clothing information provided is based on published literature or manufacturer data. The types of clothing to be considered for this material include: Chemical/oil resistant clothing is recommended. Specific Hygiene Measures: Always observe good personal hygiene measures, such as washing after handling the material and before eating, drinking, and/or smoking. Routinely wash work clothing and protective equipment to remove contaminants. Discard contaminated clothing and footwear that cannot be cleaned. Practise good housekeeping. ENVIRONMENTAL CONTROLS Comply with applicable environmental regulations limiting discharge to air, water and soil. Protect the environment by applying appropriate control measures to prevent or limit emissions. PHYSICAL AND CHEMICAL PROPERTIES Note: Physical and chemical properties are provided for safety, health and environmental considerations only and may not fully represent product specifications. Contact the Supplier for additional information. GENERAL INFORMATION Physical State: Liquid Colour: Dark Brown Odour: Rotten Egg Odour Threshold: N/D IMPORTANT HEALTH, SAFETY, AND ENVIRONMENTAL INFORMATION Relative Density (at 15 °C): 0.7 - 0.95 Flash Point [Method]: -20°C (-4°F) - 35°C (95°F) [ASTM D-92] Flammable Limits (Approximate volume % in air) LEL 0.6 UEL 15 Autoignition Temperature: >400°C (752°F) Boiling Point / Range: > 20°C (68°F) Vapour Density (Air = 1): N/D Vapour Pressure: > 0.36 kPa (2.7 mm Hg) at 20ºC Evaporation Rate (n-butyl acetate = 1): N/D pH: N/A Log Pow (n-Octanol/Water Partition Coefficient): N/D Solubility in Water: Negligible Viscosity: [N/D at 40 °C] | <15 cSt (15 mm2/sec) at 20°C Oxidizing Properties: See Hazards Identification Section.

Further information

Freezing Point: N/D Melting Point: N/A Pour Point: -60°C (-76°F) - 20°C (68°F) Decomposition Temperature: N/D STABILITY AND REACTIVITY STABILITY: Material is stable under normal conditions. CONDITIONS TO AVOID: Avoid heat, sparks, open flames and other ignition sources. MATERIALS TO AVOID: Strong oxidizers HAZARDOUS DECOMPOSITION PRODUCTS: Material does not decompose at ambient temperatures. HAZARDOUS POLYMERIZATION: Will not occur. N/D = Not determined, N/A = Not applicable THIS SAFETY DATA SHEET CONTAINS THE FOLLOWING REVISIONS: Revision Changes: Section 09: Boiling Point C(F) information was modified. Section 11: Inhalation Lethality Test Data information was modified. Section 11: Dermal Irritation Test Data information was modified. Section 11: Eye Irritation Test Data information was modified. Section 11: Inhalation Lethality Test Comment information was modified. Section 09: Flash Point C(F) information was modified. Section 09 Viscosity information was modified. Section 14: Packing Group information was modified. Section 14: Transport Document Name information was modified. Section 14: Proper Shipping Name information was modified. Section 14: Packing Group information was modified. Section 14: Transport Document Name information was modified. Section 16: First Aid Skin information was modified. For Copy of (M)SDS : Internet: www.petro-canada.ca/msds Canada-wide telephone 1-800-668-0220; fax 1-800-837- 1228 Internet: www.petro-canada.ca/msds TM Page: 12 / 13 Trademark of Suncor Energy Inc. SUNCOR MKH OS0000000003 Version 2.0 Revision Date: 2015/05/25 Print Date 2015/05/27 For Product Safety Information: 1 905-804-4752 Prepared by Product Safety: +1 905-804-4752 The information provided in this Safety Data Sheet is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guidance for safe handling, use, processing, storage, transportation, disposal and release and is not to be considered a warranty or quality specification. The information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process, unless specified in the text. Internet: www.petro-canada.ca/msds TM Page: 13 / 13 Trademark of Suncor Energy Inc.

TOXICOLOGICAL INFORMATION

ACUTE TOXICITY Information on likely routes of : Inhalation exposure Eye contact Skin Absorption Skin contact Ingestion Acute toxicity Product: Acute oral toxicity

Principle Routes of Exposure

Conclusion / Remarks Inhalation Toxicity: No end point data for material. Highly toxic. Irritation: No end point data for material. Elevated temperatures or mechanical action may form vapours, mist, or fumes which may be irritating to the eyes, nose, throat, or lungs. Ingestion Toxicity (Rat): LD50 > 5000 mg/kg Minimally Toxic. Based on test data for structurally similar materials. Skin Toxicity (Rabbit): LD50 > 2000 mg/kg Minimally Toxic. Based on test data for structurally similar materials. Irritation: Data available. May dry the skin leading to discomfort and dermatitis. Based on test data for structurally similar materials. Eye Irritation: Data available. Irritating and will injure eye tissue. Based on test data for structurally similar materials. CHRONIC/OTHER EFFECTS For the product itself: Vapour/aerosol concentrations above recommended exposure levels are irritating to the eyes and respiratory tract, may cause headaches, dizziness, anaesthesia, drowsiness, unconsciousness and other central nervous system effects including death. May cause central nervous system disorder (e.g., narcosis involving a loss of coordination, weakness, fatigue, mental confusion and blurred vision) and/or damage. Small amounts of liquid aspirated into the lungs during ingestion or from vomiting may cause chemical pneumonitis or pulmonary edema. Very high exposure (confined spaces / abuse) to light hydrocarbons may result in abnormal heart rhythm (arrhythmias). Concurrent high stress levels and/or co-exposure to high levels of hydrocarbons (above occupational exposure limits), and to heart-stimulating substances like epinephrine, nasal decongestants, asthma drugs, or cardiovascular drugs may initiate arrhythmias. Crude oil: Contains polycyclic aromatic compounds (PACs). Prolonged and / or repeated exposure by skin or inhalation of certain PACs may cause cancer of the skin, lung, and of other sites of the body. In animal studies, some crudes produced skin tumors in mice, while other crudes produced no tumors. Developmental studies of crude oil in lab animals showed reduced fetal weight and increased fetal resorptions at maternally toxic levels. Repeated dermal exposure to crude oils in rats resulted in toxicity to the blood, liver, thymus, and bone morrow.

Contains

BENZENE: Caused cancer (acute myeloid leukemia and myelodysplastic syndrome), damage to the blood-producing system, and serious blood disorders in human studies. Caused genetic effects and effects on the immune system in laboratory animal and some human studies. Caused toxicity to the fetus and cancer in laboratory animal studies. HYDROGEN SULPHIDE: Chronic health effects due to repeated exposures to low levels of H2S have not been established. High level (700 ppm) acute exposure can result in sudden death. High concentrations will lead to cardiopulmonary arrest due to nervous system toxicity and pulmonary edema. Lower levels (150 ppm) may overwhelm sense of smell, eliminating warning of exposure. Symptoms of overexposure to H2S include headache, fatigue, insomnia, irritability, and gastrointestinal problems. Repeated exposures to approximately 25 ppm will irritate mucous membranes and the respiratory system and have been implicated in some eye damage. NAPHTHALENE: Exposure to high concentrations of naphthalene may cause destruction of red blood cells, anemia, and cataracts. Naphthalene caused cancer in laboratory animal studies, but the relevance of these findings to humans is uncertain. N-HEXANE: Prolonged and/or repeated exposures to n-Hexane can cause progressive and potentially irreversible damage to the peripheral nervous system (e.g. fingers, feet, arms, legs, etc.). Simultaneous exposure to Methyl Ethyl Ketone (MEK) or Methyl Isobutyl Ketone (MIBK) and n-Hexane can potentiate the risk of adverse effects from n-Hexane on the peripheral nervous system. n-Hexane has been shown to cause testicular damage at high doses in male rats. The relevance of this effect for humans is unknown. TOLUENE : Concentrated, prolonged or deliberate inhalation may cause brain and nervous system damage. Prolonged and repeated exposure of pregnant animals (> 1500 ppm) have been reported to cause adverse fetal developmental effects. ETHYLBENZENE: Caused cancer in laboratory animal studies. The relevance of these findings to humans is uncertain. XYLENES: High exposures to xylenes in some animal studies have been reported to cause health effects on the developing embryo/fetus. These effects were often at levels toxic to the mother. The significance of these findings to humans has not been determined. CMR Status: Chemical Name CAS Number List Citations BENZENE 71-43-2 1, 4, 5 CYCLOHEXANE 110-82-7 4 ETHYL BENZENE 100-41-4 3, 4 HYDROGEN SULPHIDE 7783-06-4 4 n-Hexane 110-54-3 4 NAPHTHALENE 91-20-3 3, 4 TOLUENE 108-88-3 4 XYLENES 1330-20-7 4 --REGULATORY LISTS SEARCHED-- 1 = IARC 1 3 = IARC 2B 5 = ACGIH A1 2 = IARC 2A 4 = ACGIH ALL 6 = ACGIH A2

ECOLOGICAL INFORMATION

The information given is based on data available for the material, the components of the material, and similar materials. ECOTOXICITY Material -- Expected to be toxic to aquatic organisms. May cause long-term adverse effects in the aquatic environment. MOBILITY More volatile component -- Highly volatile, will partition rapidly to air. Not expected to partition to sediment and wastewater solids. Less volatile component -- Low solubility and floats and is expected to migrate from water to the land. Expected to partition to sediment and wastewater solids. PERSISTENCE AND DEGRADABILITY Biodegradation: Low molecular wt. component -- Expected to be inherently biodegradable High molecular wt. component -- Expected to biodegrade slowly. Photolysis: More water soluble component -- Expected to degrade at a moderate rate in water when exposed to sunlight. Atmospheric Oxidation: More volatile component -- Expected to degrade rapidly in air BIOACCUMULATION POTENTIAL Components -- Has the potential to bioaccumulate. DISPOSAL CONSIDERATIONS Disposal recommendations based on material as supplied. Disposal must be in accordance with current applicable laws and regulations, and material characteristics at time of disposal. DISPOSAL RECOMMENDATIONS Product is suitable for burning in an enclosed controlled burner for fuel value or disposal by supervised incineration at very high temperatures to prevent formation of undesirable combustion products. REGULATORY DISPOSAL INFORMATION Empty Container Warning Empty Container Warning (where applicable): Empty containers may contain residue and can be dangerous. Do not attempt to refill or clean containers without proper instructions. Empty drums should be completely drained and safely stored until appropriately reconditioned or disposed. Empty containers should be taken for recycling, recovery, or disposal through suitably qualified or licensed contractor and in accordance with governmental regulations. DO NOT PRESSURISE, CUT, WELD, BRAZE, SOLDER, DRILL, GRIND, OR EXPOSE SUCH CONTAINERS TO HEAT, FLAME, SPARKS, STATIC ELECTRICITY, OR OTHER SOURCES OF IGNITION. THEY MAY EXPLODE AND CAUSE INJURY OR DEATH. TRANSPORT INFORMATION LAND (TDG) Proper Shipping Name: PETROLEUM SOUR CRUDE OIL, FLAMMABLE, TOXIC Ecotoxicity Product: Toxicity to fish

Hazard categories

Division 3 (6.1) Division 3 ID Number: 3494 Packing Group: I ERG Number: 131 Label(s): 3 (6.1) Transport Document Name: UN3494, PETROLEUM SOUR CRUDE OIL, FLAMMABLE, TOXIC, 3 (6.1), PG I SEA (IMDG) Proper Shipping Name: PETROLEUM SOUR CRUDE OIL, FLAMMABLE, TOXIC Division 3 EMS Number: F-E, S-E Division - Header information was deleted information was deleted

UN Number

3494 Packing Group: I Footnote: If shipped over water, product TDG classification as shown below for SEA (IMDG). LAND (DOT) Proper Shipping Name: PETROLEUM SOUR CRUDE OIL, FLAMMABLE, TOXIC 3494 Packing Group: I Label(s): 3 (6.1) Transport Document Name: UN3494, PETROLEUM SOUR CRUDE OIL, FLAMMABLE, TOXIC, 3 (6.1), PG I, (-20°C c.c.) AIR (IATA) Proper Shipping Name: FORBIDDEN REGULATORY INFORMATION Header information was deleted information was deleted Section 14: Packing Group - Header information was deleted. Section 14: Packing Group information was deleted. Section 14: Label(s) - Header information was deleted. Section 14: Label(s) information was deleted. Section 14: Transport Document Name - Header information was deleted. Section 14: Transport Document Name information was deleted. SYNONYMS: DRAYTON VALLEY SOUR CRUDE (PREVIOUSLY CALLED PEMBINA SOUR), EDMONTON HIGH SOUR CRUDE (SHE), EDMONTON LOW SOUR CRUDE (ELE), LIGHT SOUR BLEND CRUDE, MIXED BLEND SOUR CRUDE, SOUR CRUDE OIL, CRUDE OIL, HIGH H2S, CRUDE OIL (>0.005% H2S) ----------------------------------------------------------------------------------------------------------------------------------------------------- PRECAUTIONARY LABEL TEXT: : 1993 Proper shipping name : FLAMMABLE LIQUID, N.O.S. (Fuels, diesel, no. 2) Class : 3 Packing group : II Labels : 3 EmS Code : F-E, S-E Marine pollutant : no Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code Not applicable for product as supplied. TDG : 1993 Proper shipping name : FLAMMABLE LIQUID, N.O.S. (Fuels, diesel, no. 2) Class : 3 Packing group : II Labels : 3 ERG Code : 128 Marine pollutant : no Special precautions for user Not applicable SECTION 15. REGULATORY INFORMATION

WHMIS Classification

Class B, Division 2 Flammable Liquids Class D, Division 1, Subdivision A Very Toxic Material Class D, Division 2, Subdivision B: Toxic Material This product has been classified in accordance with hazard criteria of the Controlled Products Regulations and the (M)SDS contains all the information required by the Controlled Products Regulations. CEPA: All components of this material are either on the Canadian Domestic Substances List (DSL), exempt, or have been notified under CEPA. Complies with the following national/regional chemical inventory requirements AICS, DSL, ENCS, IECSC, KECI, PICCS, TSCA The Following Ingredients are Cited on the Lists Below: Chemical Name CAS Number List Citations BENZENE 71-43-2 6 CYCLOHEXANE 110-82-7 6 n-Hexane 110-54-3 6 TOLUENE 108-88-3 6 --REGULATORY LISTS SEARCHED-- 1 = TSCA 4 3 = TSCA 5e 5 = TSCA 12b 2 = TSCA 5a2 4 = TSCA 6 6 = NPRI Class B, Division 2 Flammable Liquids Class D, Division 1, Subdivision A Very Toxic Material Class D, Division 2, Subdivision B: Toxic Material : B2: Flammable liquid D2A: Very Toxic Material Causing Other Toxic Effects D2B: Toxic Material Causing Other Toxic Effects This product has been classified according to the hazard criteria of the CPR and the MSDS contains all of the information required by the CPR. The components of this product are reported in the following inventories: DSL This product contains one or several components listed in the Canadian NDSL list.

Health hazards

Very toxic by inhalation. Irritating to skin. Danger of serious irreversible effects by a single exposure. If swallowed, may be aspirated and cause lung damage.

Physical hazards

FLAMMABLE. In use, may form flammable/explosive vapour-air mixture. Material can accumulate static charges which may cause an ignition.

Precautionary statements

H2S is present. Avoid contact with skin. Avoid contact with eyes. Prevent exposure to ignition sources, for example use non-sparking tools and explosion-proof equipment. Potentially toxic/irritating fumes/vapour may be evolved from heated or agitated material. Use only with adequate ventilation. Do not enter storage areas or confined spaces unless adequately ventilated. Use proper bonding and/or earthing procedures.However, bonding and earthing may not eliminate the hazard from static accumulation. The toxic and olfactory (sense of smell) fatigue properties of hydrogen sulfide require that air monitoring alarms and respiratory protection be used where the concentration might be expected to reach a harmful level, such as in an enclosed space, heated transport vessel, or in a spill or leak situation. FIRST AID Inhalation: Immediately remove from further exposure. Get immediate medical assistance. For those providing assistance, avoid exposure to yourself or others. Use adequate respiratory protection. Give supplemental oxygen, if available. If breathing has stopped, assist ventilation with a mechanical device. Eye: Flush thoroughly with water for at least 15 minutes. Get medical assistance. Oral: Seek immediate medical attention. Do not induce vomiting. Skin: Remove contaminated clothing. Dry wipe exposed skin and cleanse with waterless hand cleaner and follow by washing thoroughly with soap and water. For those providing assistance, avoid further skin contact to yourself or others. Wear impervious gloves. Launder contaminated clothing separately before reuse. Discard contaminated articles that cannot be laundered. For hot product: Immediately immerse in or flush affected area with large amounts of cold water to dissipate heat. Cover with clean cotton sheeting or gauze and get prompt medical attention. FIRE FIGHTING MEDIA Use water fog, foam, dry chemical or carbon dioxide (CO2) to extinguish flames. SPILL/LEAK Land Spill: Eliminate all ignition sources (no smoking, flares, sparks or flames in immediate area). Stop leak if you can do so without risk. Prevent entry into waterways, sewer, basements or confined areas. A vapour-suppressing foam may be used to reduce vapour. Fully encapsulating, vapour-protective clothing should be worn for spills and leaks with no fire. Water Spill: Stop leak if you can do so without risk. Eliminate sources of ignition. Warn other shipping. Report spills as required to appropriate authorities. If the Flash Point exceeds the Ambient Temperature by 10 deg C or more, use containment booms and remove from the surface by skimming or with suitable absorbents when conditions permit. If the Flash Point does not exceed the Ambient Air Temperature by at least 10C, use booms as a barrier to protect shorelines and allow material to evaporate. Seek the advice of a specialist before using dispersants. Use Not intended or suitable for use in or around a household or dwelling. ----------------------------------------------------------------------------------------------------------------------------- ------------------------ The information and recommendations contained herein are, to the best of Imperial Oil's knowledge and belief, accurate and reliable as of the date issued. Imperial Oil assumes no responsibility for accuracy of information unless the document is the most current available from an official Imperial Oil distribution system. The information and recommendations are offered for the user's consideration and examination, and it is the user's responsibility to satisfy itself that they are suitable and complete for its particular use. If buyer repackages this product, legal counsel should be consulted to insure proper health, safety and other necessary information is included on the container. Appropriate warnings and safe-handling procedures should be provided to handlers and users. Alteration of this document is strictly prohibited. Except to the extent required by law, republication or retransmission of this document, in whole or in part, is not permitted. ----------------------------------------------------------------------------------------------------------------------------------------------------- DGN: 5003405 (1014936) ----------------------------------------------------------------------------------------------------------------------------- ------------------------ Copyright 2002 Imperial Oil Limited, All rights reserved Prepared by: Imperial Oil Limited, IH and Product Safety SUNCOR MKH OS0000000003 Version 2.0 Revision Date: 2015/05/25 Print Date 2015/05/27 butane 106-97-8 0 - 1.2 % isobutane 75-28-5 0.1 - 1 % benzene 71-43-2 0.1 - 0.2 % n-hexane 110-54-3 0.1 - 0.5 % toluene 108-88-3 0.1 - 0.2 % 1,3-butadiene 106-99-0 0.1 - 0.2 % Product may contain 0 - 50ppm hydrogen sulphide. SECTION 4. FIRST AID MEASURES If inhaled : Move to fresh air. Artificial respiration and/or oxygen may be necessary. Seek medical advice. In case of skin contact : In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash skin thoroughly with soap and water or use recognized skin cleanser. Wash clothing before reuse. Seek medical advice. In case of eye contact : Remove contact lenses. Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Obtain medical attention. If swallowed : Rinse mouth with water. DO NOT induce vomiting unless directed to do so by a physician or poison control center. Never give anything by mouth to an unconscious person. Seek medical advice. Most important symptoms : First aider needs to protect himself. and effects, both acute and delayed SECTION 5. FIREFIGHTING MEASURES Suitable extinguishing media : Carbon dioxide (CO2) Foam Dry chemical Unsuitable extinguishing : Do NOT use water jet. media Specific hazards during : Cool closed containers exposed to fire with water spray. firefighting Carbon oxides (CO, CO2), sulphur oxides (SOx), nitrogen oxides (NOx), hydrocarbons, smoke and irritating vapours as products of incomplete combustion. Internet: www.petro-canada.ca/msds TM Page: 3 / 13 Trademark of Suncor Energy Inc. SUNCOR MKH OS0000000003 Version 2.0 Revision Date: 2015/05/25 Print Date 2015/05/27 TWA 0.5 ppm CA ON OEL STEL 2.5 ppm CA ON OEL TWAEV 1 ppm CA QC OEL 3 mg/m3 STEV 5 ppm CA QC OEL 15.5 mg/m3 TWA 0.5 ppm ACGIH STEL 2.5 ppm ACGIH 1,3-butadiene 106-99-0 TWA 2 ppm CA AB OEL 4.4 mg/m3 TWA 2 ppm CA BC OEL TWAEV 2 ppm CA QC OEL 4.4 mg/m3 TWA 2 ppm ACGIH Engineering measures : Use only in well-ventilated areas. Personal protective equipment Respiratory protection : Use respiratory protection unless adequate local exhaust ventilation is provided or exposure assessment demonstrates that exposures are within recommended exposure guidelines. Respirator selection must be based on known or anticipated exposure levels, the hazards of the product and the safe working limits of the selected respirator. Filter type : Wear a NIOSH-approved respirator/breathing apparatus in situations where there may be potential for airborne exposure. Hand protection Material : neoprene, nitrile. Consult your PPE provider for breakthrough times and the specific glove that is best for you based on your use patterns. It should be realized that eventually any material regardless of their imperviousness, will get permeated by chemicals. Therefore, protective gloves should be regularly checked for wear and tear. At the first signs of hardening and cracks, they should be changed.

Remarks

Chemical-resistant, impervious gloves complying with an approved standard should be worn at all times when handling chemical products if a risk assessment indicates this is necessary. Eye protection : Wear face-shield and protective suit for abnormal processing problems. Skin and body protection : Choose body protection in relation to its type, to the concentration and amount of dangerous substances, and to the specific work-place. Protective measures : Wash contaminated clothing before re-use. Hygiene measures : Remove and wash contaminated clothing and gloves, including the inside, before re-use. Wash face, hands and any exposed skin thoroughly after handling. Internet: www.petro-canada.ca/msds TM Page: 6 / 13 Trademark of Suncor Energy Inc. SUNCOR MKH OS0000000003 Version 2.0 Revision Date: 2015/05/25 Print Date 2015/05/27 SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES Appearance : liquid Colour : black Odour : hydrocarbon-like Odour Threshold : No data available pH : No data available Melting point/range : No data available Initial boiling point and boiling : > 49 °C (120 °F) range Method: ASTM D-86 Flash point : < -35 °C (-31 °F) Auto-Ignition Temperature : No data available Evaporation rate : No data available Flammability : Easily ignites under almost all normal temperature conditions. Extremely flammable in presence of open flames, sparks, shocks, heat, oxidizing materials. Vapours are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks), and may travel considerable distance to sources of ignition and flash back. Upper explosion limit : No data available Lower explosion limit : No data available Vapour pressure : estimated 11.8 kPaMethod: ASTM D 323A Relative vapour density : No data available Relative density : estimated 0.92 - 0.94 Density : 0.938 kg/l Solubility(ies) Water solubility : insoluble No data available Acute inhalation toxicity No data available Acute dermal toxicity No data available Components: fuel, diesel no. 2: Acute inhalation toxicity : LC50 Rat: 4.1 mg/l Exposure time: 4 h Test atmosphere: dust/mist sulfur: Acute dermal toxicity : LD50 Rabbit: > 2,000 mg/kg, xylene: Acute oral toxicity : LD50 Rat: 4,300 mg/kg, Acute inhalation toxicity : LC50 Rat: 5000 ppm Exposure time: 4 h Test atmosphere: dust/mist Acute dermal toxicity : LD50 Rabbit: > 1,700 mg/kg, butane: Internet: www.petro-canada.ca/msds TM Page: 8 / 13 Trademark of Suncor Energy Inc. SUNCOR MKH OS0000000003 Version 2.0 Revision Date: 2015/05/25 Print Date 2015/05/27 Acute inhalation toxicity : LC50 Rat: 658 mg/l Exposure time: 4 h Test atmosphere: gas isobutane: Acute inhalation toxicity : LC50 Rat: 658,000 mg/m3 Exposure time: 4 h Test atmosphere: gas benzene: Acute oral toxicity : LD50 Rat: 2,990 mg/kg, Acute inhalation toxicity : LC50 Rat: 13700 ppm Exposure time: 4 h Test atmosphere: dust/mist Acute dermal toxicity : LD50 Rabbit: > 8,240 mg/kg, n-hexane: Acute oral toxicity : LD50 Rat: 15,840 mg/kg, Acute inhalation toxicity : LC50 Rat: 48000 ppm Exposure time: 4 h Test atmosphere: dust/mist Acute dermal toxicity : LD50 Rabbit: > 3,295 mg/kg, toluene: Acute oral toxicity : LD50 Rat: 5,580 mg/kg, Acute inhalation toxicity : LC50 Rat: 7585 ppm Exposure time: 4 h Test atmosphere: dust/mist Acute dermal toxicity : LD50 Rabbit: 12,125 mg/kg, Skin corrosion/irritation Product: No data available Components: sulfur: Result: Moderate skin irritant xylene: Result: Skin irritation benzene: Internet: www.petro-canada.ca/msds TM Page: 9 / 13 Trademark of Suncor Energy Inc. SUNCOR MKH OS0000000003 Version 2.0 Revision Date: 2015/05/25 Print Date 2015/05/27 Result: Moderate skin irritant toluene: Result: Moderate skin irritant Serious eye damage/eye irritation Product: No data available Components: benzene: Result: Moderate eye irritation toluene: Result: Mild eye irritation Respiratory or skin sensitisation No data available Germ cell mutagenicity No data available Carcinogenicity No data available Reproductive toxicity No data available STOT - single exposure No data available STOT - repeated exposure No data available Aspiration toxicity No data available No data available Toxicity to daphnia and other No data available aquatic invertebrates Toxicity to algae No data available Internet: www.petro-canada.ca/msds TM Page: 10 / 13 Trademark of Suncor Energy Inc. SUNCOR MKH OS0000000003 Version 2.0 Revision Date: 2015/05/25 Print Date 2015/05/27 Toxicity to bacteria No data available Components: n-hexane : Toxicity to fish : LC50 (Fish): 4.12 mg/l Exposure time: 96 h Toxicity to daphnia and other : EC50 (Daphnia (water flea)): 3.87 mg/l aquatic invertebrates Exposure time: 48 h Persistence and degradability Product: Biodegradability No data available Bioaccumulative potential Components: butane :

Other hazards

No data available SECTION 13. DISPOSAL CONSIDERATIONS Disposal methods Waste from residues : The product should not be allowed to enter drains, water courses or the soil. Offer surplus and non-recyclable solutions to a licensed disposal company. Waste must be classified and labelled prior to recycling or disposal. Send to a licensed waste management company. Dispose of as hazardous waste in compliance with local and national regulations. Dispose of product residue in accordance with the instructions of the person responsible for waste disposal. SECTION 14. TRANSPORT INFORMATION International Regulation IATA-DGR UN/ID No. : 1993 Proper shipping name : Flammable liquid, n.o.s. Internet: www.petro-canada.ca/msds TM Page: 11 / 13 Trademark of Suncor Energy Inc. SUNCOR MKH OS0000000003 Version 2.0 Revision Date: 2015/05/25 Print Date 2015/05/27 (Fuels, diesel, no. 2) Class : 3 Packing group : II Labels : 3 Packing instruction (cargo : 364 aircraft) IMDG-Code

Signal word

Danger

Hazard statements

Causes skin irritation. • Causes serious eye irritation. • May cause genetic defects. • May cause cancer. • Suspected of damaging fertility or the unborn child. • May cause respiratory irritation. • Causes damage to organs through prolonged or repeated exposure. • May be fatal if swallowed and enters airways. • Extremely flammable liquid and vapor. • May cause drowsiness or dizziness. PRECAUTIONARY • Wear protective gloves/protective clothing/eye protection/face protection. • Obtain special instructions before use. • Do not handle until all safety precautions have been read and understood. • Use personal protective equipment as required. • Do not breathe dust/fume/gas/mist/vapors/spray. • Use only outdoors or in a well-ventilated area. • Do not eat, drink or smoke when using this product. • Keep away from heat/sparks/open flames/hot surfaces. • Keep container tightly closed. • No smoking. • Ground/bond container and receiving equipment. • Use explosion-proof electrical/ventilating/lighting/equipment. • Use only non-sparking tools. • Take precautionary measures against static discharge. • In case of inadequate ventilation wear respiratory protection.

Prevention

Wash face, hands and any exposed skin thoroughly after handling.

Response

IF EXPOSED or concerned: Get medical advice/attention. • IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. • Call a POISON CENTER or doctor/physician if you feel unwell. • IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. • Do NOT induce vomiting. • IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower and soap. • In case of fire: Use CO2, dry chemical, or foam for extinction. • IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. • If SKIN irritation occurs: Get medical advice/attention. • If EYE irritation persists: Get medical advice/attention. Storage/Disposal • Store locked up and keep cool. • Store in a well-ventilated place. Keep container tightly closed. • Dispose of content and/or container in accordance with local, regional, national, and/or international regulations. OTHER • Under United States Regulations (29 CFR 1910.1200 - Hazard Communication Standard), this product is INFORMATION considered hazardous. • Very toxic to aquatic life with long lasting effects. Safety Data Sheet: Petroleum Crude Oil—Sour Enbridge Pipelines Inc. Page 2 of 23 Revision Date: 9/4/2015