BUFFERED

SECTION 2: Hazards identification

OSHA Hazards Identification Emergency Emergency overview overview DANGER Corrosive. Causes severe skin and eye burns. Causes digestive tract burns. May be fatal if inhaled, absorbed through skin, or swallowed. Mist or vapor extremely irritating to eyes and respiratory tract. Causes blood, cardiovascular system and respiratory system damage. Prolonged exposure may cause chronic effects. Reacts with water. OSHA OSHA regulatory regulatory regulatory status status This product is considered hazardous under 29 CFR 1910.1200 (Hazard Communication).

Potential health effects

Potential health health effects Routes Routes of of of of exposure exposure Ingestion. Inhalation. Skin contact. Eye contact. Eyes Corrosive. Causes severe eye burns. Vapor or spray may cause eye damage, impaired sight or blindness. Skin Corrosive. Causes severe skin burns. This product may be fatal if it is absorbed through the skin. The fluoride ion readily penetrates the skin causing destruction of deep tissue layers and even bone. Symptoms may develop after several hours. Inhalation May be harmful if inhaled. Corrosive. May cause damage to mucous membranes in nose, throat, lungs and bronchial system. Ingestion Corrosive. May be fatal if swallowed. Ingestion may produce burns to the lips, oral cavity, upper airway, esophagus and possibly the digestive tract. Target Target organs organs Eyes. Skin. Respiratory system. Blood. Heart and cardiovascular system. Teeth. Bone. Endocrine system.

Potential chronic health

Chronic effects Corrosive. Prolonged contact causes serious tissue damage. Intake of more than 6 mg of fluorine per day may result in fluorosis, bone and joint damage. Hypocalcemia and hypomagnesemia can occur from absorption of fluoride ion into blood stream. Symptoms may be delayed. Chronic effects Corrosive. Prolonged contact causes serious tissue damage. Intake of more than 6 mg of fluorine per day may result in fluorosis, bone and joint damage. Hypocalcemia and hypomagnesemia can occur from absorption of fluoride ion into blood stream. Symptoms may be delayed. Carcinogenicity This product is not considered to be a carcinogen by IARC, ACGIH, NTP, or OSHA. ACGIH ACGIH Carcinogens Carcinogens AMMONIUM FLUORIDE (CAS 12125-01-8) A4 Not classifiable as a human carcinogen. HYDROFLUORIC ACID (CAS 7664-39-3) A4 Not classifiable as a human carcinogen. IARC IARC Monographs. Monographs. Monographs. Overall Overall Overall Evaluation Evaluation Evaluation of of of of Carcinogenicity Carcinogenicity AMMONIUM FLUORIDE (CAS 12125-01-8) 3 Not classifiable as to carcinogenicity to humans. HYDROFLUORIC ACID (CAS 7664-39-3) 3 Not classifiable as to carcinogenicity to humans. Skin Skin corrosion/irritation corrosion/irritation Corrosive to skin and eyes. The fluoride ion readily penetrates the skin causing destruction of deep tissue layers and even bone. Symptoms may develop after several hours. Epidemiology No epidemiological data is available for this product. Mutagenicity No data available to indicate product or any components present at greater than 0.1% are mutagenic or genotoxic. Neurological Neurological effects effects No data available for this product. Reproductive Reproductive effects effects Contains no ingredient listed as toxic to reproduction

Environmental effects

Potential environmental environmental effects The product may affect the acidity (pH-factor) in water with risk of harmful effects to aquatic organisms. 3333. . . . Composition Composition Composition / / / / Information Information Information on on on on Ingredients Ingredients Hazardous Hazardous components components CAS CAS # # # # Percent AMMONIUM FLUORIDE 12125-01-8 30 - 40 HYDROFLUORIC ACID 7664-39-3 1 - 10 Environmental effects An environmental hazard cannot be excluded in the event of unprofessional handling or disposal. Persistence Persistence and and Expected to be readily biodegradable. degradability Partition Partition coefficient coefficient Not available (n-octanol/water) 13 13. 13 13 . . . Disposal

Non Hazardous Components

Non-hazardous components CAS CAS # # # # Percent WATER 7732-18-5 55 - 65 4444. . . . First First First Aid Aid Aid Measures Measures First First aid aid aid procedures procedures Eye Eye contact contact Immediately flush with plenty of water for at least 15 minutes. If easy to do, remove contact lenses. Call a physician or poison control center immediately. In case of irritation from airborne exposure, move to fresh air. Get medical attention immediately. Skin Skin contact contact Immediately flush with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Call a physician or poison control center immediately. Wash clothing separately before reuse. Destroy or thoroughly clean contaminated shoes. Inhalation Move to fresh air. If breathing stops, provide artificial respiration. If breathing is difficult, give oxygen. Call a physician or poison control center immediately. Ingestion Call a physician or poison control center immediately. Do not induce vomiting. If vomiting occurs, the head should be kept low so that stomach vomit doesn't enter the lungs. Notes Notes to to to to physician physician Keep victim under observation. Appropriate treatment to help protect the affected person against circulatory shock, respiratory depression, and convulsion may be needed. Symptoms may be delayed. General General advice advice In the case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). Show this safety data sheet to the doctor in attendance. Ensure that medical personnel are aware of the material(s) involved, and take precautions to protect themselves. 5555. . . . Fire Fire Fire Fighting Fighting Fighting Measures Measures Flammable Flammable properties properties The product is not flammable. Material will react with water and may release a flammable (and/or) toxic gas. Extinguishing Extinguishing media media Suitable Suitable extinguishing extinguishing Carbon dioxide (CO2). Dry chemical powder. Foam. media Unsuitable Unsuitable extinguishing extinguishing The product reacts with water and will generate heat. Addition of water or foam to the fire may media cause frothing. Protection Protection of of of of firefighters firefighters Specific Specific hazards hazards arising arising Not flammable, but reacts with most metals to form flammable hydrogen gas. Fire may produce from from the the the chemical chemical irritating, corrosive and/or toxic gases. Protective Protective equipment equipment equipment and and Self-contained breathing apparatus and full protective clothing must be worn in case of fire. Use

Precautionary statements

precautions for for for firefighters firefighters water spray to cool unopened containers. Cool containers exposed to flames with water until well after the fire is out. Special Special protective protective protective equipment equipment equipment for for Wear full protective clothing, including helmet, self-contained positive pressure or pressure fire-fighters demand breathing apparatus, protective clothing and face mask. Wear self-contained breathing apparatus with a full facepiece operated in the positive pressure demand mode when fighting fires. Specific Specific methods methods In the event of fire and/or explosion do not breathe fumes. 6666. . . . Accidental Accidental Accidental Release Release Release Measures Measures Personal Personal precautions Wear appropriate protective equipment and clothing during clean-up. Keep unnecessary personnel away. Keep upwind. Keep out of low areas. Ventilate closed spaces before entering them. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Local authorities should be advised if significant spillages cannot be contained. Environmental Environmental precautions Prevent further leakage or spillage if safe to do so. Do not contaminate water. Avoid discharge into drains, water courses or onto the ground. Methods Methods for for for containment containment Stop the flow of material, if this is without risk. Prevent entry into waterways, sewer, basements or confined areas. Dike the spilled material, where this is possible. Methods Methods for for for cleaning cleaning cleaning up up up up Large Spills: Neutralize spill area and washings with soda ash or lime. Use a non-combustible material like vermiculite, sand or earth to soak up the product and place into a container for later disposal. Dike far ahead of spill for later disposal. Small Spills: Neutralize spill area and washings with soda ash or lime. Wipe up with absorbent material (e.g. cloth, fleece). Collect in a non-combustible container for prompt disposal. Never return spills in original containers for re-use. Clean surface thoroughly to remove residual contamination. Clean up in accordance with all applicable regulations. 7777. . . . Handling Handling Handling and and and Storage

Storage

Handling Wear appropriate personal protective equipment. Do not get in eyes, on skin, on clothing. Do not breathe mist or vapor. Do not taste or swallow. Use only with adequate ventilation. Wash thoroughly after handling. Do not eat, drink or smoke when using the product. Use caution when combining with water; DO NOT add water to acid, ALWAYS add acid to water while stirring to prevent release of heat, steam and fumes. See Section 8 of the MSDS for Personal Protective Equipment. Do not store in metal containers. Keep tightly closed in a dry, cool and well-ventilated place. 8888. . . . Exposure Exposure Exposure Controls Controls Controls / / / / Personal Personal Personal Protection Protection ACGIH Components Type Value AMMONIUM FLUORIDE (12125-01-8) BEL 3.0000 mg/g 10.0000 mg/g TWA 2.5000 mg/m3 HYDROFLUORIC ACID (7664-39-3) BEL 3.0000 mg/g 10.0000 mg/g Ceiling 2.0000 ppm TWA 2.5000 mg/m3 0.5000 ppm Occupational Occupational exposure exposure exposure limits limits UUUU....SSSS. . . . - - - - OSHA OSHA Components Type Value Form AMMONIUM FLUORIDE (12125-01-8) PEL 2.5000 mg/m3 TWA 2.5000 mg/m3 Dust. HYDROFLUORIC ACID (7664-39-3) PEL 2.5000 mg/m3 TWA 3.0000 ppm Engineering Engineering controls controls Good general ventilation (typically 10 air changes per hour) should be used. Ventilation rates should be matched to conditions. If applicable, use process enclosures, local exhaust ventilation, or other engineering controls to maintain airborne levels below recommended exposure limits. If exposure limits have not been established, maintain airborne levels to an acceptable level. Personal Personal protective protective protective equipment equipment Eye Eye / / / / face face face protection protection Wear safety glasses with side shields (or goggles) and a face shield. Skin Skin protection protection Wear appropriate chemical resistant clothing. Wear appropriate chemical resistant gloves. Respiratory Respiratory protection protection If engineering controls do not maintain airborne concentrations below recommended exposure limits (where applicable) or to an acceptable level (in countries where exposure limits have not been established), an approved respirator must be worn. Chemical respirator with specific cartridge and full facepiece providing protection against the compound of concern. General General hygeine hygeine Provide eyewash station and safety shower. Always observe good personal hygiene measures, considerations such as washing after handling the material and before eating, drinking, and/or smoking. Routinely wash work clothing and protective equipment to remove contaminants. General Wear chemical protective equipment that is specifically recommended by the manufacturer. Launder contaminated clothing before reuse. 9999. . . . Physical Physical Physical & & & & Chemical Chemical Chemical Properties Properties Appearance Clear. Color Colorless. Odor Not available. Odor Odor threshold threshold Not available. Physical Physical state state Liquid. Form Liquid. pH pH pH pH 1 (0.1 M HF) Melting Melting point point 64.4 °F (18 °C) Freezing Freezing point point 64.4 °F (18 °C) Flash Flash point point Not available. Evaporation Evaporation rate rate Not available. Flammability Flammability limits limits limits in in in in air, air, air, upper, upper, Not available. % % % % by by by by volume volume Flammability Flammability limits limits limits in in in in air, air, air, lower, lower, Not available. % % % % by by by by volume volume Vapor Vapor density density Not available. Specific Specific gravity gravity 1.1 Relative Relative density density Not available. Solubility Solubility (water) (water) Not available. Partition Partition coefficient coefficient Not available (n-octanol/water) Auto-ignition Auto-ignition temperature temperature Not available. Decomposition Decomposition temperature temperature Not available. 10 10. 10 10 . . . Chemical Chemical Chemical Stability Stability Stability & & & & Reactivity Reactivity Reactivity Information Information Chemical Chemical stability stability Stable under normal temperature conditions. Instability caused by elevated temperatures. Conditions Conditions to to to to avoid avoid Heat. Water, moisture. Incompatible Incompatible materials materials Strong oxidizing agents. Acids. Bases, alkalies (organic). Ammonia. Sodium hydroxide. Sulfuric acid. Vinyl acetate. Organic compounds. Glass. Fluorine. Cyanides. Metals. Alkaline metals. May attack some plastics, rubber and coatings. Contact with water rapidly liberates toxic gas. Hazardous Hazardous decomposition decomposition Hydrogen fluoride. Nitrogen oxides (NOx). Ammonia. products Possibility Possibility of of of of hazardous hazardous Hazardous polymerization does not occur. reactions 11 11 11 11. . . . Toxicological

TOXICOLOGICAL INFORMATION

Toxicological Information Toxicological Toxicological data data Product Test Test Results Results BUFFERED OXIDE ETCH (Mixture) Acute Dermal LD50 Rabbit: 51.73 mg/kg Acute Inhalation LC50 Rat: 0.385 mg/l 4.00 hours Acute Oral LD50 Rat: 45.45 mg/kg Sensitization Not a skin sensitizer. US US US US ACGIH ACGIH ACGIH Threshold Threshold Threshold Limit Limit Limit Values: Values: Values: Skin Skin Skin designation designation HYDROFLUORIC ACID (CAS 7664-39-3) Can be absorbed through the skin. Acute Acute effects effects May be fatal if inhaled, absorbed through skin, or swallowed. Local Local effects effects Causes severe burns. Mist or vapor extremely irritating to eyes and respiratory tract. Causes blood, cardiovascular system and respiratory system damage.

Teratogenic Effects

No data available for this product. Symptoms Symptoms and and and target target Corrosive effects. Shortness of breath. Decrease in motor functions. Circulatory collapse. organs

Further information

Further information Danger of very serious irreversible effects. Symptoms may be delayed. 12 12. 12 12 . . . Ecological

ECOLOGICAL INFORMATION

Ecological Information Ecotoxicity The product may affect the acidity (pH-factor) in water with risk of harmful effects to aquatic organisms.

Disposal

Considerations Considerations Waste Waste codes codes US US US US RCRA RCRA RCRA Hazardous Hazardous Hazardous Waste Waste Waste U U U U List: List: List: Reference Reference HYDROFLUORIC ACID (CAS 7664-39-3) U134 Disposal instructions instructions Dispose of this material and its container to hazardous or special waste collection point. Incinerate the material under controlled conditions in an approved incinerator. All wastes must be handled in accordance with local, state and federal regulations. Contaminated Contaminated packaging packaging Since emptied containers retain product residue, follow label warnings even after container is emptied. Offer rinsed packaging material to local recycling facilities. 14 14. 14 14 . . . Transport Transport Transport Information Information DOT Basic Basic shipping shipping shipping requirements: requirements: UN UN UN UN number number UN2922 Proper Proper shipping shipping shipping name name Corrosive liquid, toxic, n.o.s. (HYDROFLUORIC ACID, AMMONIUM FLUORIDE)

Hazard categories

Hazard class 8 Subsidiary Subsidiary hazard hazard class 6.1 Packing Packing group group II Hazard class 8 Subsidiary Subsidiary hazard hazard class 6.1 Packing Packing group group II Hazard class 8 Subsidiary Subsidiary hazard hazard class 6.1 Packing Packing group group II DOT IATA IMDG 15 15. 15 15 . . . Regulatory Regulatory Regulatory Information Information US US US US federal federal federal regulations regulations This product is a "Hazardous Chemical" as defined by the OSHA Hazard Communication Standard, 29 CFR 1910.1200. All components are on the U.S. EPA TSCA Inventory List. US US US US EPCRA EPCRA EPCRA (SARA (SARA (SARA Title Title Title III) III) III) Section Section 302 302 - - - - Extremely Extremely Extremely Hazardous Hazardous Hazardous Spill: Spill: Spill: Reportable Reportable Reportable quantity quantity HYDROFLUORIC ACID (CAS 7664-39-3) 100 LBS US US US US EPCRA EPCRA EPCRA (SARA (SARA (SARA Title Title Title III) III) III) Section Section 302 302 - - - - Extremely Extremely Extremely Hazardous Hazardous Hazardous Substance:

Additional information

Additional information: Additional information: Packaging Packaging exceptions exceptions 154 Packaging Packaging non non non bulk bulk 202 Packaging Packaging bulk bulk 243 ERG ERG number number 154 Notes Depending on the quantity of material shipped, this product may be subject to the Hazardous Substances (RQ) requirements illustrated in the 49 CFR 172.101 Appendix A. IATA Basic Basic shipping shipping shipping requirements: requirements: UN UN UN Additional information: ERG ERG code code 8P IMDG Basic Basic shipping shipping shipping requirements: requirements: UN UN UN

Special Provisions

Special provisions B3, IB2, T7, TP2 Basic Basic shipping shipping shipping requirements: requirements: Labels Labels required required 8, 6.1

UN Number

number 2922 Proper Proper shipping shipping shipping name name Corrosive liquid, toxic, n.o.s. (HYDROFLUORIC ACID, AMMONIUM FLUORIDE) number 2922 Proper Proper shipping shipping shipping name name CORROSIVE LIQUID, TOXIC, N.O.S. (HYDROFLUORIC ACID, AMMONIUM FLUORIDE)