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Product Name: Zinc Chloride
Chemical Formula: ZnCl2
CAS Number: 7646-85-7
Synonyms: Butter of Zinc, Zinc Dichloride
Recommended Use: Industrial, Laboratory Chemicals, Galvanizing, Wood Preservative
Manufacturer Information: [Supplier details: include address and emergency contact number]
Emergency Contact: [Company-specific emergency number or CHEMTREC]
GHS Classification: Corrosive to metals, Acute toxicity (oral, dermal, inhalation), Skin corrosion, Serious eye damage
Signal Word: Danger
Hazard Statements: Causes severe skin burns and eye damage. Harmful if swallowed, inhaled, or in contact with skin. Corrosive to metals.
Pictograms: Corrosion, Health Hazard, Exclamation Mark
Precautionary Statements: Avoid breathing dust, fumes. Wash hands thoroughly after handling. Wear protective gloves, protective clothing, eye and face protection.
Potential Health Effects: Eye and skin irritation or burns, respiratory tract irritation, possible vomiting or diarrhea if ingested
Environmental Impact: Harmful to aquatic life with long-lasting effects
Chemical Name: Zinc Chloride
Concentration: 98 – 100%
CAS Number: 7646-85-7
Impurities: Typically less than 2% (may include trace amounts of lead or cadmium depending on source)
Inhalation: Remove to fresh air immediately. Seek medical attention if coughing or respiratory discomfort persists.
Skin Contact: Remove contaminated clothing. Rinse affected area thoroughly with water for at least 15 minutes. Seek medical attention for burns or irritation.
Eye Contact: Rinse cautiously with water for at least 15 minutes, lifting eyelids occasionally. Get immediate medical attention.
Ingestion: Do not induce vomiting. Rinse mouth with water if victim is conscious. Get immediate medical attention.
Note to Physicians: Treat symptomatically. Watch for signs of pulmonary edema or burns to the GI tract.
Extinguishing Media: Dry chemical, carbon dioxide, foam. Do not use water directly on the material.
Hazardous Combustion Products: Zinc oxides, Hydrogen chloride gas
Specific Hazards: Reacts with water producing heat and toxic fumes. Non-combustible itself but contact with metals can generate hydrogen which is flammable.
Protective Equipment: Full protective gear including self-contained breathing apparatus.
Special Precautions: Keep containers cool with water spray away from spill site. Avoid breathing smoke or vapors. Stay upwind in case of fire.
Personal Precautions: Wear protective equipment including gloves, goggles, and respirator. Avoid dust formation. Ventilate area.
Environmental Precautions: Prevent spillage from entering water sources, drains, or soil. Notify authorities if large quantities escape.
Methods for Cleanup: Sweep up carefully, avoiding dust, and place in suitable, closed containers for disposal. Rinse area thoroughly with water after material has been picked up.
Decontamination: Neutralize spill site with dilute sodium bicarbonate solution if possible. Avoid contact with acids.
Safe Handling: Handle with care, avoid forming dust, use local exhaust ventilation. Do not eat, drink, or smoke in handling area. Wash hands and face after use.
Storage Conditions: Store in a cool, dry, well-ventilated area. Use corrosion-resistant containers (polyethylene or glass recommended). Keep containers tightly closed and clearly labeled. Store away from water sources, acids, and bases.
Incompatibilities: Acids, strong bases, water, moisture
Special Requirements: Secondary containment to prevent environmental contamination; keep away from reactive materials.
Occupational Exposure Limits: ACGIH TLV: 1 mg/m3 (fume), OSHA PEL: 1 mg/m3 (fume)
Engineering Controls: Use local exhaust ventilation to control airborne concentrations. Install eyewash stations and safety showers.
Personal Protective Equipment:
– Respiratory: NIOSH-approved respirator
– Skin: Impermeable gloves (nitrile or neoprene)
– Eye: Chemical safety goggles or face shield
– Body: Lab coat, apron, or chemical-resistant suit
Hygiene Measures: Replace contaminated clothing immediately. Remove clothing before breaks and at the end of work shift.
Appearance: White, deliquescent crystalline solid or powder
Odor: Odorless
Odor Threshold: Not applicable
pH: 4.0 (50 g/L solution)
Melting Point: 290°C
Boiling Point: 732°C (sublimes)
Flash Point: Not flammable
Evaporation Rate: Not applicable
Flammability: Not flammable
Vapor Pressure: 1 mmHg (732°C)
Vapor Density: Not applicable
Solubility: Soluble in water (432 g/100 mL at 25°C), ethanol, glycerol
Partition Coefficient (n-octanol/water): Not available
Auto-ignition Temperature: Not applicable
Decomposition Temperature: 732°C
Viscosity: Not applicable
Chemical Stability: Stable under recommended storage conditions. Hygroscopic—absorbs moisture from air.
Reactivity: Reacts violently with water, producing heat and highly acidic solutions. Generates toxic hydrogen chloride gas with acids or humid air.
Hazardous Reactions: Reacts with bases to form zinc hydroxide precipitate. Attacks many metals, generating hydrogen gas.
Incompatible Materials: Water, strong bases, acids, strong oxidizing agents, metals (aluminum, steel, copper, etc.)
Hazardous Decomposition Products: Zinc oxide fumes, hydrogen chloride gas, chlorine gas under extreme conditions
Routes of Entry: Inhalation, ingestion, skin and eye contact
Acute Toxicity: Oral LD50 (rat): 350 mg/kg, Dermal LD50 not established
Inhalation: May cause burning sensation in respiratory tract, coughing, shortness of breath, pulmonary edema with high concentrations
Skin: Causes burns, ulceration, and severe irritation; possible absorption through skin
Eye: Causes burns, conjunctivitis, vision impairment
Ingestion: Burns to mouth, throat, gastrointestinal tract; nausea, vomiting, diarrhea, abdominal pain
Chronic Effects: Prolonged exposure may lead to dermatitis, symptoms of zinc poisoning (metal fume fever, effects on blood and metabolism)
Carcinogenicity: Not listed by IARC, NTP, or OSHA
Sensitization: Not known to cause sensitization
Ecotoxicity: Very toxic to aquatic organisms (fish LC50: 0.09–2.2 mg/L for 96 hours)
Persistence and Degradability: Inorganic chemical persists in the environment. Soluble zinc ions can accumulate in aquatic environments.
Bioaccumulation Potential: Zinc may bioaccumulate in aquatic organisms.
Mobility in Soil: High solubility may lead to migration into groundwater.
Other Adverse Effects: Disruption of aquatic environments; avoid release into nature
Waste Treatment Methods: Dispose of as hazardous waste in accordance with local, state, and federal regulations.
Disposal of Contaminated Packaging: Rinse containers thoroughly; dispose of in approved landfill or by incineration where permitted.
Sewage Disposal: Do not discharge into sewer systems or bodies of water.
Recommended Disposal: Licensed hazardous waste contractor; chemical neutralization may be used with care under regulatory guidance
Special Precautions: Avoid accumulation of dust and residues that may react with moisture in waste containers
UN Number: UN2331
UN Proper Shipping Name: Zinc Chloride, anhydrous
Transport Hazard Class: 8 (Corrosive substances)
Packing Group: III
Labels Required: Corrosive
Marine Pollutant: Yes
Transport Precautions: Keep container tightly closed and upright. Avoid moisture and water contact. Follow all relevant transport regulations for corrosives.
TSCA Status: Listed
SARA Title III (Sections 311/312): Acute health hazard, chronic health hazard
SARA Title III (Section 313): Zinc compounds subject to reporting
RCRA Status: Listed (Solid waste may be hazardous, D004 for zinc-containing waste)
CERCLA Reportable Quantity: 1,000 pounds (zinc compounds)
California Proposition 65: Not listed
WHMIS Classification (Canada): Class E: Corrosive material; D2B: Toxic material
Other Regulations: Subject to OSHA process safety management requirements where applicable. Please refer to national and regional regulations for further compliance.
