BA-10

2.1 Classification of the substance or mixture

OSHA Skin Corrosion/Irritation Category 1A H314 Serious eye damage Category 1 H318 Acute aquatic toxicity ~Category 2 H402 Corrosive to metals Category 1 H290

Hazard statements

H290 - May be corrosive to metals H314 - Causes severe skin burns and eye damage H318 - Causes serious eye damage H402 - Harmful to aquatic life

Prevention

P234 - Keep only in original container P260 - Do not breathe vapors, mist, spray. P264 - Wash hands, forearms, and exposed areas thoroughly after handling. P273 - Avoid release to the environment. P280 - Wear eye protection, protective clothing, protective gloves, face protection.

Response

P301+P330+P331 - IF SWALLOWED: rinse mouth. Do NOT induce vomiting. P303+P361+P353 - IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. P363 - Wash contaminated clothing before reuse. P304+P340 - IF INHALED: Remove person to fresh air and keep at rest in a position comfortable for breathing. P305+P351+P338 - IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P310 - Immediately call a POISON CENTER/doctor. P321 - Specific treatment (see Section 4).

Storage

P405 - Store locked up. P406 - Store in corrosive resistant container with a resistant inner liner. Precautionary Statements-Disposal P501 - Dispose of contents/container in accordance with local, regional, national, territorial, provincial, and international regulations. Common Name Sodium Hydroxide; Caustic Soda Chemical Family Caustic Solution, Lye Solution Chemical Name CAS No. Weight by % Sodium Hydroxide 1310-73-2 Proprietary** **The specific chemical identity and/or exact percentage (concentration) of composition has been withheld as a trade secret First Aid Measures General Advice Consult a physician. Show MSDS to doctor in attendance. Move out of dangerous area. Eye Contact Immediately flush eyes for 30 minutes with plenty of water. It may take less than 10 seconds to cause permanent damage. Call a physicianimmediately. Skin Contact Thoroughly flushing skin with water for over 30 minutes is imperative. Remove contaminated clothing; was before reuse. Call a physicianimmediately. Inhalation Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Call physicianimmediately. Ingestion DO NOT INDUCE VOMITING. Give large quantities of water, then an antacid. Never give anything by mouth to an unconscious person. Call aphysician immediately. Most Important Symptoms and Effects Symptoms Sever burns to eyes, skin, or internal organs. Indication of any immediate medical attention and special treatmentneeded Yes, in cases of great exposure/contact. Notes to Physician Immediate first aid are imperative. Never move victim from water access only on the advice of qualified medical personnel. CORROSIVE may cause structure. If lavage is performed, suggest end tracheal and or esophogoscopic control. STRONG ALKALI, if burn is present, treat as thermal burn after discretion of the medical personnel. No specific antidote. Suitable Extinguishing Media Cool exposed tanks with water. Non-combustible. Unsuitable Extinguishing Media Not determined. Specific Hazards Arising from the Chemical In water, caustic can react with amphoteric metals (such as aluminum) generating hydrogen. Contact with water or acids may generate sufficient heat to ignite nearby combustible material; self contained breathing apparatus should be worn. Hydrogen is flammable and potentially explosive. Appropriate cautions should be taken. Hazardous Combustion Products See “specific hazards” above. Protective equipment and precautions for firefighters As in any fire, wear self-contained breathing apparatus pressure-demand, MSHA/NIOSH (approved or equivalent) and full protective gear. Personal precautions, protective equipment and emergency procedures Personal Precautions Use personal protective equipment. Avoid breathing vapors, mist, or gas. Ensure adequate ventilation. Evacuate personnel to safeareas. Environmental Precautions See Section 12 for additional Conditions Store in tightly sealed containers. Incompatible Materials Water and acid. Product is strong caustic alkali. May react violently with water, acid, and number of organic compounds. Caustic reacts rapidly with aluminum, tin, and zinc. It also reacts with bronze and brass. Product absorbs water and carbon dioxide from the air. Exposure Guidelines Chemical Name ACGIH TLV

ECOLOGICAL INFORMATION

See

Disposal

Considerations, for additional information Methods and material for containment and cleaningup Methods for Containment Prevent further leakage or spillage if safe to do so. Methods for Clean-Up Flush small spills with water. After flushing, dilute acid (preferably acetic acid or inert absorbent material) may be used to neutralize the final traces of mineral. Precautions for safe handling Advice on Safe Handling Handle in accordance with good industrial hygiene and safety practice. Wash face, hands, and any exposed skin thoroughly after handling. Do not breathe dust/fume/gas/mist/vapors/spray. Use personal protection recommended in Section 8. Conditions for safe storage, including anyincompatibilities

Remarks

. Method pH 12.5-14.0 Melting/Freezing Point Not Available Boiling Point/Boiling Range >145°F Flash Point Not flammable Evaporation Rate Not Available Flammability (Solid, Gas) Not flammable Upper Flammability Limits Not Applicable Lower Flammability Limit Not Applicable Vapor Pressure 1.5 mm Hg Vapor Density Not Available Specific Gravity 1.50-1.55 Water Solubility Complete Partition Coefficient Not Applicable Autoignition Temperature Not Applicable Decomposition Temperature Not Applicable Kinematic Viscosity Not Applicable Dynamic Viscosity Not Available Explosive Properties Not Applicable Oxidizing Properties Not Applicable O S vy — Reactivity Moderate reactivity Chemical Stability Stable Possibility of Hazardous Reactions ~ Yes Hazardous Polymerization Polymerization will not occur. Conditions to Avoid None Found Incompatible Materials Water, acids, organic materials. Chlorinated solvents, aluminum, phosphorus, tin/tin oxides, zinc. Hazardous Decomposition Products Hydrogen gas, sodium oxides under fire conditions. Information on likely routes of exposure

Product information

Eye Contact Eye contact results in severe irritation with corneal injury and may cause permanent impairment of vision, even blindness. Vapors/mists may irritate eyes. Skin Contact Short single exposure may cause severe skin burns. The dermal LD 50 has not been determined. Inhalation Dusts or mists may cause severe irritation to upper respiratory tract. Inhalation LC 50 has not been determined. Ingestion May cause gastrointestinal irritation or ulceration and severe burns of the mouth and throat. Single dose oral LD 50 has not been determined. Component Information Chemical Name Oral LD50 Dermal LD50 Inhalation LC50 Sodium Hydroxide No Data 1350 mg/kg ( Rabbit ) No Data Symptoms Please see section 4 of this SDS symptoms. for Delayed and immediate effects as well as chronic effects from short and long term exposure Carcinogenicity None of the components of this material are listed as a carcinogen by LARC, NTP, OSHA OR ACGIH. Numerical measures of toxicity No Data Available Ecotoxicity Do not empty into drains. Sodium Hydroxide is harmful to some aquatic life. Component Information Chemical Name |Algae/Aquatic Fish Toxicity to Crustacea Plants Microorganism| Sodium Hydroxide No Data 45.4 mg/L No Data 40 mg/! (Exposure time: 96 h - (Exposure time: 48 h - Species: Oncorhynchus Species: Daphnia magna)| mykiss [static]) Persistence/Degradability No information available Bioaccumulation No Information available Mobility No information available Other Adverse Effects Not Available Waste Treatment Methods Disposal of Wastes Dispose in a manner consistent with federal, state and local regulations. Contaminated Packaging Dispose of as unused product California Hazardous Waste Status Not Listed Note Please see current shipping paper for most up to date shipping information, including exemptions and special circumstances. Dot UN/ID No UN1824 Proper Shipping Name Sodium Hydroxide solution Hazard Class Corrosive, 8 Packing Group n Reportable Quantity (RQ) EPA Regulation 40 CFR 302 (CERCLA Section 102) Sodium Hydroxide Solution, 1000 pounds 1ATA UN/ID No UN1824 Proper Shipping Class Sodium Hydroxide solution Hazard Class Corrosive, 8 Packing Group 1 IMDG UN/ID No UN1824 Proper Shipping Name Sodium Hydroxide solution Hazard Class Corrosive, 8 Packing Group n International Inventories TSCA, DSL, EINECS, ENCS, IECSC, KECL, PICCS Listed Legend: TSCA: United States Toxic Substances Control Act Section 8(b) Inventory DSL/NDSL: Canadian Domestic Substances List/Non-Domestic SubstancesList EINECS/ELINCS: European Inventory of Existing Chemical Substances/European List of Notified Chemical Substances ENCS: Japan Existing and New Chemical Substances IECSC: China Inventory of Existing Chemical Substances KECL: Korean Existing and Evaluated ChemicalSubstances PiCCS: Philippines Inventory of Chemicals and Chemical