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Product Name: Zinc Ash
Common Names: Zinc Skimmings, Zinc Dross
Chemical Family: Non-ferrous Metal Compounds
Synonyms: Zinc Oxide, Zinc Residue
CAS Number: 1314-13-2 (primary component)
Product Codes: Commonly referenced in smelting, recycling, and galvanization
Intended Use: Raw material for metallurgy, galvanizing, and chemical production
Supplier Information: Contact details of manufacturer or distributor
Emergency Phone Number: 24-hour service for chemical emergencies
Potential Health Effects: Eye, skin, and respiratory tract irritation possible; inhalation of dust causes metal fume fever; repeated exposure to high concentrations linked to chills, fever, and muscle pain
Environmental Hazards: Harmful to aquatic life, contamination of soil and water documented in industrial areas
Label Elements: Hazard pictograms, signal word 'Warning', precautionary statements describing prevention and response
Physical Hazards: Dust formation presents present fire and explosion risk under some conditions; generates hydrogen on reaction with acids
Routes of Exposure: Inhalation, skin and eye contact, ingestion considered less common
Zinc Oxide: 60–92% by weight, CAS 1314-13-2
Metallic Zinc: 5–30% by weight, CAS 7440-66-6
Other Metal Oxides: Up to 5% (often contains iron, lead, cadmium, trace elements)
Impurities: Aluminum, magnesium, lead < 1%, antimony, small amounts of organic material or water
Inhalation: Remove person to fresh air, aid breathing, seek medical attention if symptoms persist such as nausea, dizziness, or fever-like chills
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water, treat irritation with emollient, seek advice if rash appears
Eye Contact: Rinse with plenty of water for at least 15 minutes, avoid rubbing, check for contact lenses and remove if easy, seek prompt medical help for persistent irritation
Ingestion: Rinse mouth, do not induce vomiting, seek immediate medical attention if feeling unwell or ingesting significant quantity
Note for Medical Providers: Treat symptomatically, observation for metal fume fever recommended after significant inhalation
Suitable Extinguishing Media: Use dry sand, sodium chloride, or Class D fire extinguishing media on fires; do not use water or foam
Specific Hazards: Zinc dust or ash can ignite, emits toxic zinc oxide fumes under fire conditions, risk increases in confined areas
Firefighting Procedures: Evacuate area, wear full protective gear including self-contained breathing apparatus, avoid breathing dust or fumes
Special Protective Equipment: Positive pressure respirator, gloves, and face protection for fire teams
Combustion Byproducts: Formation of zinc oxide fumes, which can cause acute health effects
Personal Precautions: Evacuate non-essential personnel, ensure proper ventilation, wear dust-resistant masks, gloves, eye protection
Environmental Precautions: Prevent spillage from entering watercourses, soil; contain with inert materials such as sand
Cleanup Methods: Shovel up in dry condition, avoid creating dust; place into suitable labeled containers for disposal; do not flush into sewer
Decontamination: Clean affected area with plenty of water after material removal; dispose of contaminated cleaning supplies as hazardous waste
Handling Precautions: Avoid breathing dust, avoid physical contact; do not eat, drink, or smoke while handling; wash thoroughly after handling
Safe Storage Conditions: Store in a cool, dry, well-ventilated place, away from food, organic materials, strong acids, and oxidizing agents; keep containers closed and labeled
Packaging Materials: Use corrosion-resistant containers; keep away from sources of ignition
Storage Stability: Stable under normal conditions, hazardous if in contact with acids or moisture
Occupational Exposure Limits: Zinc oxide dust: ACGIH TLV 2 mg/m³ (respirable fraction), OSHA PEL 5 mg/m³ (fume)
Engineering Controls: Use efficient local exhaust ventilation at points of dust generation; handle in a fume hood if possible
Respiratory Protection: Approved respirators and dust masks may be necessary during dusty operations
Skin Protection: Rubber or nitrile gloves, long-sleeved protective work clothing, boots
Eye/Face Protection: Safety goggles and/or face shields to protect against splashes and dust
Hygiene Measures: Wash hands and face after handling, do not bring contaminated clothing home
Appearance: Gray-white powder, sometimes granular or flaky
Odor: Odorless to slightly metallic
pH: Slightly alkaline in water suspension
Melting Point: Not applicable due to mixed composition; metallic Zn melts at 419.5°C, ZnO at 1975°C
Density: 2.5–6 g/cm³ depending on composition
Solubility: Practically insoluble in water, reacts with acids to release hydrogen
Boiling Point: Decomposes before boiling
Vapor Pressure: Not applicable at ambient temperatures
Flash Point: Not flammable in bulk form, powders or dusts present ignition risk
Other Information: Fine dust can form explosive mixtures with air
Chemical Stability: Stable in dry, non-reactive environments; may absorb moisture over time
Reactivity: Reacts with strong acids, generates flammable hydrogen gas; incompatible with strong oxidizers, halogens, and ammonium salts
Hazardous Decomposition: Fumes of zinc oxide and other toxic oxides under fire or intense heat
Conditions to Avoid: High humidity, contact with acids/oxidizers, formation of dust clouds
Acute Effects: Inhalation causes metal fume fever (fever, muscle aches, nausea); high dust exposure irritates eyes, nose, and throat
Chronic Effects: Chronic exposure associated with lung function changes, pneumonitis; contains trace lead and cadmium, risk of cumulative poisoning present
Skin/Eye Contact: Repeated exposure causes dermatitis and irritation
LD50/LC50 Data: Oral LD50 (rat) for zinc oxide: >5,000 mg/kg; inhalation LC50 not well documented for mixtures
Sensitization: Not classified as sensitizer, but can cause discomfort on repeated contact
Carcinogenicity: Zinc compounds not classified as carcinogenic; lead and cadmium impurities linked to increased cancer risk
Other Information: No targeted reproductive or teratogenic studies specific to zinc ash mixtures
Aquatic Toxicity: Harmful for aquatic organisms, bioaccumulation in aquatic and terrestrial organisms possible; zinc ions toxic to fish and invertebrates
Mobility in Soil: Low mobility in dry soils, increased leaching and runoff in acidic or waterlogged conditions
Persistence and Degradability: Zinc compounds persistent in the environment, do not degrade easily
Bioaccumulative Potential: Zinc and heavy metals can build up in plants and animals over time, especially in contaminated sites
Other Adverse Effects: Runoff may disrupt local ecosystems, observed declines in invertebrate and fish populations near disposal sites
Waste Disposal Methods: Dispose of as hazardous industrial waste, according to local, national, and international regulations
Contaminated Packaging: Treat as hazardous waste, thoroughly clean before reuse, label and seal containers
Special Precautions: Do not dispose in household waste or urban sewers; avoid dust formation during handling and transport for disposal
Recommended Treatment: Secure landfill or approved treatment facility; recovery and recycling encouraged if feasible
UN Number: Not classified as dangerous goods under UN transport regulations; local rules may vary based on impurity levels
UN Proper Shipping Name: Zinc Ash or Zinc Residue
Transport Hazard Class: Not regulated for major modes, but containments due to potential heavy metal impurities
Packing Group: Usually not required unless classified based on heavy metals
Special Precautions: Prevent package damage; avoid spillage and minimize dust during transport
Environmental Hazards: Documented history of spills contaminating waterways; cover and label appropriately
Workplace Safety Regulations: Compliance with OSHA or local occupational health regulations for dust and metal exposure levels; exposure monitoring for lead, cadmium when present
Chemical Inventory Listing: Zinc oxide and metallic zinc listed on most national and international chemical inventories including US TSCA, Canadian DSL, EU REACH
Labeling Requirements: Hazard symbols (irritant, environmental hazard), risk and safety phrases per GHS and local rules
Special Provisions: Facilities generating or handling zinc ash may require permits, periodic environmental monitoring, and health surveillance programs
Community Right-To-Know: Reportable under SARA Title III/EPCRA in the US if specific heavy metal content thresholds are exceeded
