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Product Name: Zinc Chloride
Chemical Formula: ZnCl2
CAS Number: 7646-85-7
Synonyms: Butter of Zinc, Zinc Dichloride
Recommended Use: Laboratory reagent, industrial applications, water treatment, textile processing, chemical synthesis
Supplier Information: Responsible manufacturer or distributor details, including address and emergency contact telephone
Emergency Contact: Local poison control hotline or emergency services number
Classification: Corrosive to metals, acute toxicity (oral and dermal), serious eye damage, skin irritation
Hazard Statements: Causes severe skin burns and eye damage, harmful if swallowed, toxic to aquatic life with long lasting effects
Signal Word: Danger
Pictograms: Corrosive, exclamation mark, environment
Precautionary Statements: Avoid breathing dust and fumes, wear protective gloves and clothing, avoid release to the environment, wash thoroughly after handling, keep only in original container, do not eat, drink, or smoke when using this product
Zinc Chloride: > 98%
Other Trace Components: Water, zinc oxide, hydrochloric acid residues as impurities (usually < 2%)
Molecular Weight: 136.3 g/mol
Inhalation: Move affected individual to fresh air, supply oxygen if breathing becomes difficult, seek immediate medical attention
Ingestion: Rinse mouth, do not induce vomiting, drink water cautiously if conscious, immediate medical attention required
Skin Contact: Remove contaminated clothing, rinse skin with plenty of water for several minutes, seek medical help if irritation or burns develop
Eye Contact: Rinse thoroughly with water for at least 15 minutes, keep eyelids open, seek emergency medical assessment
Symptoms of Exposure: Cough, sore throat, abdominal pain, diarrhea, burns, eye redness, vision blurring, skin blistering
Suitable Extinguishing Media: Dry chemical, carbon dioxide, or foam for surrounding fire; water spray to cool containers
Hazards from Combustion: Material does not burn, but releases hazardous hydrogen chloride and zinc oxide fumes if heated strongly
Protective Equipment for Firefighters: Self-contained breathing apparatus and full protective clothing recommended
Special Precautions: Containers exposed to heat can rupture, avoid inhaling toxic decomposition fumes
Personal Precautions: Evacuate area, ventilate if necessary, prevent dust formation, wear appropriate PPE (gloves, goggles, protective clothing, mask with particulate/acid gas filter)
Environmental Precautions: Prevent entry of powder and run-off into waterways, soil, and drains; notify authorities for large spills
Containment and Cleanup: Collect spillage using non-sparking tools, sweep up without generating dust, place in labeled containers for disposal, wash spill site after cleanup
Handling: Keep dust generation and direct contact to a minimum, use only in well-ventilated areas, handle with gloves, goggles, and protective clothing, avoid inhaling vapors and dust
Storage: Store in tightly closed, corrosion-resistant containers in a cool, dry, well-ventilated place, segregate from strong bases, oxidizers, water, and food/feed products, ensure containers remain labeled and upright, secure containers against physical damage
Occupational Exposure Limits: ACGIH TLV: 1 mg/m3 (as zinc chloride smoke), OSHA PEL: 1 mg/m3
Engineering Controls: Use local exhaust ventilation, enclosed processes, fume hoods
Personal Protective Equipment: Chemical-resistant gloves (nitrile, neoprene), splash goggles or face shield, long sleeves/laboratory coat, rubber boots, NIOSH-approved respiratory protection for dust/fume above limits
Hygiene Measures: Wash hands and face after use, do not eat/drink/smoke near product, remove contaminated clothing and launder before reuse
Appearance: White to off-white granular solid, crystalline lumps, or powder
Odor: Odorless
Melting Point: 290 °C
Boiling Point: 732 °C
Solubility: Highly soluble in water, exothermic dissolution
pH: Acidic (pH 4 for 10% solution)
Vapor Pressure: Negligible at room temperature
Density: 2.91 g/cm3
Other Properties: Deliquescent, absorbs moisture from air, reacts vigorously with water producing heat
Chemical Stability: Stable under normal conditions
Reactivity: Corrodes metals, reacts vigorously with water and strong bases, releases irritating and toxic hydrogen chloride gas upon decomposition/high heat exposure
Incompatible Materials: Water, strong bases, oxidizing agents, metals such as potassium and sodium, combustibles
Hazardous Decomposition Products: Hydrogen chloride gas, zinc oxide fumes
Acute Toxicity: Harmful if swallowed, inhaled, or absorbed through skin; oral LD50 (rat) ~350 mg/kg
Chronic Exposure: Prolonged or repeated exposure can damage mucous membranes, skin, lungs, digestive tract
Health Effects: Corrosive, can cause severe burns to eyes, skin, respiratory and gastrointestinal systems
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, ACGIH, or OSHA
Additional Information: May cause adverse effects to reproductive system with significant repeated exposure, inhalation of fumes can irritate lungs and cause pulmonary edema
Aquatic Toxicity: Toxic to fish and aquatic invertebrates, LC50 (96 h, fish): 0.5–1.0 mg/L
Environmental Persistence: Zinc compounds accumulate in sediment, can persist in aquatic systems
Bioaccumulation: Potential accumulation in aquatic organisms, may pose risk to food chain
Degradability: Not biodegradable, transforms to less soluble compounds in soil/water
Precautions: Avoid environmental release, follow good containment and disposal practices to minimize impact
Product Disposal: Treat as hazardous chemical waste, avoid direct discharge to drains, watercourses, or soil
Recommended Method: Send to licensed chemical waste disposal facility; neutralize with suitable agents under controlled conditions if permitted
Container Disposal: Rinse containers well, puncture and dispose as hazardous waste unless otherwise regulated, retain safety labels until completely processed
Regulatory Compliance: Follow local, regional, and national hazardous waste regulations for handling and transportation
UN Number: UN 2331
Shipping Name: Zinc Chloride, Anhydrous
Transport Hazard Class: 8 (Corrosive substances)
Packing Group: III
Label Required: Corrosive
Special Transport Precautions: Avoid contact with incompatible substances, secure load to prevent shifting and leaks, document emergency response information and spill procedures
Regulatory Requirements: Comply with local, national, and international transport regulations (such as ADR, IMDG, IATA)
TSCA Inventory: Listed
OSHA Regulations: Classified as hazardous chemical
SARA Title III: Reportable under SARA 313—zinc compounds
WHMIS Classification (Canada): Class E—Corrosive material, Class D2B—Toxic material
REACH Registration: Registered under applicable European regulations
Other Regulations: Subject to right-to-know, workplace labeling requirements, environmental and occupational safety standards
Workplace Safety: Facilities must maintain proper hazard communication systems, ensure access to Safety Data Sheets, provide safety training for exposed workers
