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Product Name: Zinc Dust
Chemical Name: Zinc Powder
CAS Number: 7440-66-6
Synonyms: Zinc Metal Powder, Zinc Granular
Recommended Uses: Galvanizing, Catalyst, Pigment, Chemical Synthesis
Supplier Contact: Customer Service Department, Address and Emergency Contact Information
Emergency Contact Number: Listed on packaging and company website
GHS Classification: Flammable Solid (Category 2), Hazardous to Aquatic Environment (Acute 1, Chronic 1)
Signal Word: Danger
Hazard Statements: May form flammable dust-air mixtures; Harmful if swallowed; Causes eye irritation; Harmful if inhaled; Causes skin irritation; Very toxic to aquatic life with long-lasting effects
Pictograms: Flame, Exclamation Mark, Environment
Precautionary Statements: Avoid dust formation; Avoid breathing dust; Prevent release to environment; Wear protective equipment; Wash hands thoroughly after handling
Chemical Identity: Zinc
Concentration: 95% - 100% Zinc (Trace impurities)
Impurities: May include lead, cadmium, iron in minor amounts
Hazardous Components: Zinc, with minor heavy metal traces
Molecular Formula: Zn
Inhalation: Move to fresh air; Seek medical attention for persistent symptoms
Skin Contact: Remove contaminated clothing; Rinse skin with plenty of water and soap; Seek medical advice for irritation
Eye Contact: Rinse well with plenty of water for several minutes, lifting eyelids; Remove contact lenses if present; Seek immediate medical help for irritation
Ingestion: Rinse mouth; Do not induce vomiting; Seek medical attention promptly
Extinguishing Media: Use dry chemical, sand, or special metal extinguishing powder; Water spray may intensify fires
Fire Hazards: Zinc dust can form flammable or explosive mixtures with air; Reacts with water to produce hydrogen gas
Protective Equipment: Full protective gear and self-contained breathing apparatus
Special Procedures: Avoid using water or carbon dioxide directly on the metal dust; Contain and suppress fire with dry agents; Move containers from fire area if safe
Personal Precautions: Use personal protective equipment including gloves, goggles, and mask; Evacuate unnecessary personnel
Environmental Precautions: Prevent entry into waterways, drains, or soils
Spill Cleanup: Sweep up carefully, minimize dust generation, collect in labeled, sealed containers; Wash spill area after cleanup
Disposal: Use licensed waste disposal contractors; Follow local, regional, and national regulations for hazardous waste
Safe Handling: Avoid breathing dust; Handle in well-ventilated areas; Use spark-proof tools; Avoid contact with acids and moisture
Storage Conditions: Store in tightly closed, dry containers; Separate from incompatible materials such as acids and oxidizers; Keep away from moisture, heat sources, and ignition sources
Technical Measures: Ground all equipment; Prevent buildup of static electricity; Use explosion-proof lighting and electrical fittings where handling large quantities
Packaging: Use containers made of materials that do not react with zinc or zinc dust
Exposure Limits: OSHA PEL (TWA) 5 mg/m³, ACGIH TLV 2 mg/m³ (respirable fraction)
Engineering Controls: Local exhaust, adequate ventilation, dust collection systems
Personal Protection: Safety goggles, gloves, protective clothing; Approved respirators for dust exposure
Hygiene Measures: Wash hands and face before eating or drinking; Change contaminated clothing and clean well before reuse
Special Requirements: Emergency shower and eyewash stations in immediate area
Appearance: Grey powdered solid
Odor: Odorless
Odor Threshold: Not applicable
pH: Not available
Melting Point: 419.5°C
Boiling Point: 907°C
Flash Point: Not applicable (solid), but dust is flammable
Evaporation Rate: Not applicable
Flammability: Flammable in dust form
Explosion Limits: Lower 4.0% by volume (as dust); Upper: Not available
Vapor Pressure: 1 mmHg at 487°C
Vapor Density: Not applicable
Relative Density: 7.14 (water = 1)
Solubility: Insoluble in water
Partition Coefficient: Not available
Auto-ignition Temperature: 460–650°C
Decomposition Temperature: Not available
Viscosity: Not applicable
Molecular Weight: 65.4 g/mol
Chemical Stability: Stable under recommended storage and handling conditions
Possible Hazards: Reacts with acids, water, and strong oxidizers releasing hydrogen gas
Conditions to Avoid: Moisture, heat, ignition sources, strong oxidants
Incompatible Materials: Strong acids, oxidizing agents, ammonium nitrate, sulfur
Hazardous Decomposition: Hydrogen gas, zinc oxides (at high temperatures)
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Acute Toxicity: Metal fume fever from inhalation; irritation to eyes, skin, and respiratory tract
Chronic Effects: Long-term exposure may lead to lung function effects, skin or allergy issues
LD50 Oral (Rat): >630 mg/kg (as Zinc powder)
Symptoms: Fever, chills, cough, nausea, headache
Carcinogenicity: Not labeled as carcinogen under IARC, NTP, or OSHA
Other Effects: May aggravate existing lung or skin conditions
Aquatic Toxicity: Very toxic to aquatic organisms, may cause long term adverse effects in the aquatic environment
Persistence and Degradability: Not readily biodegradable
Bioaccumulative Potential: Zinc can accumulate in aquatic organisms
Mobility in Soil: Limited mobility in soil due to low solubility
Other Adverse Effects: High concentrations disrupt microbial and aquatic life balance
Waste Disposal Methods: Handle as hazardous waste; Collect and send to authorized hazardous waste treatment and disposal sites
Contaminated Packaging: Remove residues before disposal; Follow applicable local and national regulations
Additional Recommendations: Avoid disposal of material into the environment; Recycle where possible
UN Number: UN 1436
UN Proper Shipping Name: Zinc powder, flammable
Transport Hazard Class: 4.3 (substances which in contact with water emit flammable gases)
Packing Group: II
Environmental Hazards: Marine pollutant
Special Transport Precautions: Secure containers; Avoid impact, moisture, and temperature extremes
Applicable Regulations: Series of guidelines from IMDG, IATA, ADR
OSHA: Classified as hazardous under OSHA Hazard Communication Standard
TSCA: Listed in the TSCA inventory
DSL/NDSL: Listed/Compliant
SARA: Reportable under SARA Title III Section 313
WHMIS: WHMIS Class B4 (Flammable Solid), Class D2B (Toxic Material)
Other Regulations: REACH registered, subject to reporting and restriction in multiple regions; Compliance with European, US, and Asian chemical safety laws remains required for manufacturers and users alike
