MSDS V. Anglaise

Material Safety Data Sheet ZINC DROSS (AND METALLICS) WHMIS (Classification) WHMIS (Pictograms) CLASS D-2B : Toxic material causing other effects SECTION 1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION Trade Name Zinc Dross (and Metallics) Product Code None Supplier Noranda Income Limited Partnership, 860 Cadieux Boulevard, Salaberry-de-Valleyfield (Quebec) Canada J6S 4W2 Information Contact Viviane DeQuoy, Industrial Hygienist Phone Number (Business hours) (450) 373-9144 Extension 2394 Phone Number (Emergency) (450) 373-9144 Synonym Scories de zinc (French) DSL (Domestic Substance List) Listed Name / Chemical Formula Not applicable Chemical Family Metal oxides Utilization Raw material in zinc extraction plants.

SECTION 2. COMPOSITION AND INFORMATIONS ON INGREDIENTS Exposure Limits ACGIH (U.S.A.) 2006 OSHA (U.S.A.) QUÉBEC (CA) Name CAS # Percentage (%) TLV-TWA (mg/m³) PEL - TWA (mg/m³) TWAEV (mg/m³) Zinc 7440-66-6 50-65 Not established Not established Not established Zinc (Oxide) 1314-13-2 9-12 2 (respirable fr.) 5 (fumes, respirable fr.) 5 (fumes) 15 (total dust) 10 (dust) Zinc (Sulfate) 15739-80-7 8-12 Not established Not established Not established Zinc (Chloride) 7646-85-7 5-7 1 (fumes) 1 (fumes) 1 (fumes) Magnésium (Sulfate) 7487-88-9 0-2 Not established Not established Not established Manganèse (Sulfate) 7785-87-7 0-2 0.2 (Mn, Mn inorganic compds) 5 (Mn fumes) 5 (Mn, dust, compounds) ACGIH : American Conference of Governmental Industrial Hygienists. OSHA : Occupational Safety and Health Administration. Note : Zinc : ACGIH TLV-TWA PNOC : Particulate matter containing no asbestos and < 1% crystalline silica. LD50 and LC50 : Not available. (RTECS). Zinc (Oxide) : ACGIH TLV-TWA : Total dust containing no asbestos and < 1% crystalline silica. ACGIH TLV-STEL : 10 mg/m3. NIOSH REL-TWA (≤10 hours) : 5 mg/m3 (Dust ; Vapours) ; IDLH : 500 mg/m3 (Dust ; Vapours). QUEBEC STEL : 10 mg/m3 (Vapours). ORAL acute (LD50) : 7 950 mg/kg (Mouse). INHALATION acute (LC50) : 2 500 mg/kg (Mouse). INTRAPERITONEAL acute (LD50) : 240 mg/kg (Rat). (RTECS). Zinc (Sulfate) : ORAL acute (LD50) : 2 949 mg/kg (Rat) ; 245 mg/kg (Mouse). INTRAPERITONEAL acute (LD50) : 71.750 mg/kg (Mouse). (HSDB). Zinc (Chloride) : ACGIH TLV-STEL : 2 mg/m3. NIOSH REL-TWA (≤10 hours) : 1 mg/m3 ; IDLH : 50 mg/m3. ORAL acute (LD50) : 350 mg/kg (Rat) ; 329 mg/kg (Mouse). INTRAPERITONEAL acute (LD50) : 58 mg/kg (Rat) ; 24 mg/kg (Mouse). (RTECS). Magnesium (Sulfate) : INTRAPERITONEAL acute (LD50) : 150 mg/kg (Mouse). SUBCUTANEOUS acute (LD50) : 1 200 mg/m3 (Rat) ; 645 mg/m3 (Mouse). (RTECS). Manganese (Sulfate) : NIOSH REL-TWA (≤10 hours) : 1 mg/m3 (Mn compounds and fume) ; STEL : 3 mg/m3 ; IDLH : 500 mg Mn/m3 (Mn compounds and fume). ORAL acute (DL50) : 305 mg/kg (Mouse). INTRAPERITONEAL acute (DL50) : 64 mg/kg (Mouse). SUBCUTANEOUS acute (DL50) : 146 mg/kg (Mouse). (HSDB). Consult local authorities for acceptable exposure limits.

SECTION 3. RISKS IDENTIFICATION FOR HUMAN HEALTH Routes of Entry Ingestion. Inhalation. Carcinogenicity Zinc ; Zinc (Oxide) ; Zinc (Sulfate) : NOT CLASSIFIED (IARC) ; NOT A CARCINOGEN (OSHA, NTP). Manganese (Sulfate) : NOT A CARCINOGEN (IARC) ; NOT CLASSIFIABLE (Human, Group A4, ACGIH). Manganese (Sulfate) : NOT A CARCINOGEN (IARC, OSHA, NTP). Mutagenicity Not applicable. Teratogenicity Not applicable. Acute Effects Irritant for : Eyes, skin. The amount of tissue damage depends on length of contact. Skin contact : Possibility of inflammation and blistering. Dust inhalation : Gastro-intestinal, mucous membranes, lungs and respiratory tract irritation (Sneezing, coughing). Severe overexposure : Lung damage, choking, unconsciousness. Zinc ; Zinc (Chloride) ; Zinc (Oxide) : Vapour oxides inhalation, probably formed when heated to temperatures near or above the boiling point, may cause metal fume fever, a delayed, generally benign, transient, reversible flu- like condition.

2007 1/5

ZINC DROSS (AND METALLICS) SECTION 4. FIRST AID MEASURES Eye Contact Check for and remove contact lenses. Immediately flush eyes with plenty of water, holding eyelids open for at least 15 minutes. Consult a physician. Skin Contact Remove contaminated clothing. Immediately flush skin with plenty of water for at least 15 minutes. Call a physician. Inhalation Remove the person from exposure. Bring to fresh air. If breathing is difficult, give oxygen. In this case get immediate medical attention. Ingestion DO NOT induce vomiting. Conscious and alert person : Rinse mouth with water and give ½ to 1 cup of water or milk to dilute material. Spontaneous vomiting : Have the individual lean forward with head down to avoid breathing in vomit ; Rinse mouth and give ½ to 1 cup of water or milk. UNCONSCIOUS person : DO NOT induce vomiting or give any liquid. IMMEDIATELY OBTAIN MEDICAL ATTENTION.

SECTION 5. FIRE AND EXPLOSION DATA Flash Point Not applicable Flammable Limits Not applicable Auto-Ignition Temperature Not applicable Products of Combustion Not applicable Fire Hazard Airborne fine zinc dust : Flammable when exposed to heat or flames. Explosion Hazard Not explosive (Mechanical impact ; Static discharge). DO NOT smoke or weld where the product is handled. Contact with water or acids : May generate flammable, explosive or toxic gases. Fire Fighting (Instructions) Firefighters must wear self-contained breathing apparatus (SCBA) and full protective clothing.

SECTION 6. ACCIDENTAL RELEASE MEASURES Spill Use appropriate tools to put the spilled solid in a convenient waste disposal container. Personal Protection Chemical goggles. Full suit. Vapour and dust respirator. Boots. Gloves. If necessary, wear a respiratory protection device approved by NIOSH. Consult a specialist BEFORE handling this product.

SECTION 7. HANDLING AND STORAGE Handling DO NOT ingest or inhale dust. Wear adequate protective clothing. Wear approved respirators if adequate ventilation cannot be provided. Ingestion or inhalation : Seek medical advice immediately and provide medical personnel with a copy of this MSDS. NEVER add water or acid. Avoid contact with skin and eyes. Storage Keep away from : Moist, incompatible substances (Oxidizing agents, acids, alkalis).

SECTION 8. ENGINEERING CONTROLS AND PERSONAL PROTECTION Engineering Controls Use process enclosures, local exhaust ventilation or other engineering controls to keep airborne levels below recommended exposure limits. If operations generate dusts or fumes, use ventilation to keep exposure to airborne contaminants below the exposure limits. Personal Protection Chemical goggles. Vapour and dust respirator. Boots. Gloves (Impervious). Wear appropriate respiratory protection (SCBA) device when ventilation is inadequate.

SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES Physical State and Appearance Solid (Granular, dusty powder) Odour Odourless Molecular Weight Not applicable Taste Not available pH (1% soln/water) Not applicable Colour Yellowish-brown Boiling Point Not available Volatility Not available Melting Point Zinc (Oxide) : 1 800°C (3 272°F) Vapour Density Not available Weighted average : 689.85°C (1 273.7°F) % Moisture Not available Critical Temperature Not available Odour Threshold Not available Specific Gravity 3 (water = 1) Water/Oil Dist. Coeff. Not available Vapour Pressure Not available Ionicity (in Water) Not available Solubility No (Water) Dispersion No (Water)

SECTION 10. STABILITY AND REACTIVITY DATA Stability Yes Conditions of Instability Not applicable Incompatibilities Slightly reactive to reactive with : Oxidizing agents, acids, alkalis. Zinc : Ammonium nitrate, barium dioxide, barium dinitrate, chlorates, chlorides, fluorides, chlorine trifluoride, chromic trioxide, hydrazine mononitrate, hydroxylamine, performic acid, potassium nitrate, dipotassium peroxide,

2007 2/5

ZINC DROSS (AND METALLICS) selenium, sodium peroxide, tellurium, sulfur, sodium hydroxide, nitrobenzene, oxidants ; Dust or very fine powder with water. Zinc (Chloride) : Reacts with sulfuric acid to produce zinc sulfate. Zinc (Sulfate) : Incompatible with : Lead, calcium, strontium salts, borax, alkali carbonates and hydroxides, silver protein and tannisers. Zinc (Oxide) : Violent reaction with : Magnesium. Reacts with hydrochloric acid to produce zinc chloride, with sulfuric acid to produce zinc sulfate. When heated to decomposition : Release of zinc oxide toxic fumes. Magnesium (Sulfate) : Magnesium hydride formation if in contact with calcium hydroxide or hydroxide aqueous solutions. Incompatible with : arsenates, phosphates, tartrates (Mg precipitation). Corrosivity Zinc (Chloride) : Corrosive (Metals).

SECTION 11. TOXICOLOGICAL INFORMATION Chronic Effects Repeated exposure to dust can produce : Eye irritation, varying degree of respiratory irritation or lung damage. Possibility of local skin damage or dermatitis. Zinc (Sulfate) : Human systemic effects by ingestion : Acute pulmonary oedema, agranulocytosis, blood pressure decrease, diarrhea and other gastrointestinal changes. Zinc (Chloride) : Little information is available on the chronic effects. Repeated and prolonged exposure : May cause dermatitis. Short time exposure : Possible eyes, skin and upper respiratory tract irritation. Severe exposure : May cause pulmonary oedema or pneumonitis. Magnesium (Sulfate) : In large quantities it can be toxic but in small quantities it does not represent any danger. Used as a purgative (Epsom salt). Manganese (Sulfate) : Manganese salt : May cause impairment of the central nervous system. Other signs : Sluggishness, sleepiness, weakness in the legs, headache and sexual excitement followed by impotency. Toxicity Persons with the following pre-existing conditions warrant particular attention : Zinc (Sulfate) : Skin problems or respiratory disorders. Manganese (Sulfate) : Lungs, nervous system, Parkinson's disease. Eating, drinking and smoking must be prohibited in areas where this material is handled and processed. Wash hands and face before eating, drinking and smoking. SECTION 12. ECOTOXICOLOGICAL INFORMATION Ecotoxicity Zinc : Rainbow trout (LC50, 96h) : 1.2 ppm ; (LC50, 48 h) 4.76 ppm ; Zebra fish (LC50, 48 h) : 136 ppm. Zinc (Sulfate) : Fathead minnow (LC50, 96h) : 25.8 mg/l. Rainbow trout (LC50, 48h) : 4.76 mg/l (In Flow-through, hard water). Toxicity to Animals Zinc (Chloride) : ORAL acute (LD50) : 350 mg/kg (Rat) ; 329 mg/kg (Mouse). INTRAPERITONEAL acute (LD50) : 58 mg/kg (Rat) ; 24 mg/kg (Mouse). (RTECS). Biodegradation Products Not applicable Biodegradation Products (Toxicity) Not applicable Remarks on Environment Zinc : May be toxic to aquatic life. Low levels of zinc will affect taste of water. BOD5 and COD Not available

SECTION 13. DISPOSAL ARRANGEMENTS Waste Disposal Recycle to process, if possible. Consult local or regional authorities.

SECTION 14. TRANSPORT INFORMATION TDG (Pictograms) Not regulated (Canada) PIN Not applicable Special Provisions (Transport) None

SECTION 15 OTHER REGULATIONS Other Regulations EU (Directive 67/548/EEC) : Listed. Zinc (Oxide) : Annex I Index number : 030-013-00-7 ; EU Consolidated Inventories : EC Number 215-222-5 Zinc (Sulfate) : Annex I Index number : 030-013-00-7 ; EU Consolidated Inventories : EC Number 231-793-3 Zinc (Chloride) : Annex I Index number : 030-003-00-2 ; EU Consolidated Inventories : EC Number 231-592-0 Manganese (Sulfate) : Annex I Index number : 025-003-00-4; EU Consolidated Inventories : EC Number 232-089-9

2007 3/5

ZINC DROSS (AND METALLICS) EU: Consolidated Inventories : Zinc : EU Consolidated Inventories : EC Number 231-175-3 Magnesium (Sulfate) : EU Consolidated Inventories : EC Number 231-298-2 CANADIAN ENVIRONMENTAL PROTECTION ACT (CEPA) : On the Domestic Substances List (DSL) ; Acceptable for use under the provisions of CEPA. CERCLA Section 103 Hazardous substances (40 CFR 302.4) ; SARA Section 313, Toxic Chemicals (40 CFR 372.65) : Zinc (Final RQ) : *1 000 pounds (454 kg) Zinc (Chloride) (Final RQ) : 1 000 pounds (454 kg) Manganese (Compounds) n.o.s. (Statutory RQ) : 1 pounds (0.454 kg) US EPA TSCA Chemical Inventory : Listed. Magnesium (Sulfate) ; Manganese (Sulfate) * No declaration required if the diameter of the piece of solid metal released is equal to or exceeds 100 micrometers (0.004 inches). Classifications HCS (U.S.A.) Not applicable Classifications DSCL (EEC) R22- Harmful if swallowed R36/38- Irritating to eyes and skin S20/21- When using, do not eat, drink or smoke S24/25- Avoid contact with skin and eyes S26/28- In case of contact with eyes or skin, rinse immediatly with plenty of water and seek medical advice S45- In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).

NFPA (National Fire Protection Association) (U.S.A.) Fire Hazard 0 Réactivity 0 Health 1 Special Hazard cor DOT (U.S.A.) (Pictograms) DSCL (Europe) (Pictograms) ADR (Europe) (Pictograms)

SECTION 16. OTHER INFORMATION References - TLVs and BEIs (2006). Based on the Documentation of the Threshold Limit Values for Chemical Substances and Physical Agents & Biological Exposure Indices. ACGIH, Cincinnati, OH – http://www.acgih.org - CCOHS (2006) - Canadian Centre for Occupational Health and Safety - http://www.ccohs.ca/ - CSST (2006) - Commission de la Santé et de la Sécurité du Travail (Québec). Service du répertoire toxicologique - http://www.reptox.csst.qc.ca/ - HSDB (2006) - Hazardous Substances Data Bank. TOXNET® Network of databases on toxicology, hazardous chemicals, and environmental health. NLM Databases & Electronic Resources, U.S. National Library of Medicine, NHI, 8600 Rockville Pike, Bethesda, MD 20894 - http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?HSDB - IARC - Monographs on the Evaluation of Carcinogenic Risks to Humans (collection) - http://www-cie.iarc.fr/ - Merck Index (1999). Merck & CO., Inc, 12th edition - NIOSH U.S. (2006) - Pocket Guide to Chemical Hazards - http://www.cdc.gov/niosh/npg/ - North American Emergency Response Guidebook Documents (2004), Developed by the U.S. Department of Transportation, Transport Canada, and the Secretariat of Communications and Transportation of Mexico - Patty's Industrial Hygiene and Toxicology, 3rd Revised Edition - Règlement sur les produits contrôlés (Canada) - RTECS ( 2006). Registry of Toxic Effects of Chemical Substances, NIOSH, CDC - Toxicologie industrielle & intoxication professionnelle, 3e édition, Lauwerys Glossary CSST : Commission de la Santé et de la Sécurité du Travail (Québec). HSDB : Hazardous Substances Data Bank. IARC : International Agency for Research on Cancer. NIOSH : National Institute of Occupational Safety and Health. NTP : U.S. National Toxicology Program. RTECS : Registry of Toxic Effects of Chemical Substances Note No specific studies have been performed on this mixture. For your protection, we suggest that you test it before using in your process. Written by : Groupe STEM Consultants / Noranda Income Limited Partnership Complete revision : 2007-01-06 Partial review : None Previous complete revision : 2004-01-06

2007 4/5

ZINC DROSS (AND METALLICS) Request to : Viviane DeQuoy Tel. : 1 (450) 373-9144 poste 2394 Fax : 1 (450) 373-4827 Noranda Income Limited Partnership, 860 Cadieux Boulevard, Salaberry-de-Valleyfield (Quebec) Canada J6S 4W2 Notice to Reader Although reasonable precautions have been taken in the preparation of the data contained herein, it is offered solely for your information, consideration and investigation. Xstrata Zinc extends no warranty and assumes no responsibility for the accuracy of the content and expressly disclaims all liability for reliance thereon. This material safety data sheet provides guidelines for the safe handling and processing of this product; it does not and cannot advise on all possible situations, therefore, your specific use of this product should be evaluated to determine if additional precautions are required. Individuals exposed to this product should read and understand this information and be provided pertinent training prior to working with this product.

2007 5/5