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Product Name: Copper Arsenate
Chemical Name: Copper(II) arsenate
Synonyms: Cupric arsenate, Copper(II) arsenate
CAS Number: 12002-03-8
Molecular Formula: Cu3(AsO4)2
Recommended Use: Wood preservative, fungicide
Restrictions on Use: Not for household use, avoid use in food-related storage
Supplier: Contact chemical distributor or industrial supplier for details
Emergency Contact: Refer to local poison control or industrial incident number
GHS Classification: Acute toxicity (oral, dermal, inhalation), Carcinogenicity, Specific target organ toxicity
Hazard Statements: Toxic if swallowed, Toxic in contact with skin and by inhalation, May cause cancer, Causes damage to organs through prolonged or repeated exposure
Pictograms: Skull and crossbones, Health hazard
Signal Word: Danger
Precautionary Statements: Avoid breathing dust or fumes, Wear protective gloves and clothing, Wash contaminated skin thoroughly, Do not eat, drink or smoke when using this product
Chemical Substance: Copper arsenate
Concentration: 95-100% by weight
Impurities: Trace copper oxides, arsenic trioxide
Component Details: Copper (II) ions, Arsenate ions
Relevant Exposure Limits: OSHA, NIOSH, ACGIH established for arsenic compounds and copper dust
Inhalation: Move exposed person to fresh air immediately, keep at rest, administer oxygen if breathing is difficult, seek immediate medical attention
Skin Contact: Remove contaminated clothing, rinse skin with plenty of water for at least 15 minutes, wash with soap, obtain medical advice
Eye Contact: Rinse immediately with plenty of water for at least 15 minutes, hold eyelids apart, remove contact lenses, obtain medical attention
Ingestion: Rinse mouth, do not induce vomiting, give water to dilute material, get emergency medical help; arsenic compounds can be fatal
Symptoms: Headache, nausea, abdominal pain, diarrhea, skin irritation, respiratory distress, possible convulsions with severe exposure
Suitable Extinguishing Media: Use water spray, foam, dry chemical, or carbon dioxide; avoid high-pressure water jets
Hazardous Combustion Products: Arsenic oxides, copper oxides, toxic fumes
Firefighting Instructions: Approach from upwind, evacuate area, wear self-contained breathing apparatus and full protective gear, avoid inhalation of fumes
Unusual Fire Hazards: Will not burn on its own, but decomposition under fire conditions may release toxic gases
Protective Equipment: Full bunker gear, chemical-resistant boots and gloves, SCBA
Personal Precautions: Evacuate non-essential personnel, wear chemical-resistant gloves, safety goggles, respirator appropriate for dusts, avoid contact with skin and inhalation of dust
Environmental Precautions: Prevent spillage from entering sewers, waterways, or soil; copper and arsenic are highly toxic to aquatic and terrestrial life
Cleanup Methods: Ventilate area, use non-sparking tools, sweep up and place in suitable containers for disposal, flush area with copious water keeping runoff contained, decontaminate equipment properly
Reporting: Notify authorities if release contaminates environment above reportable limits
Handling: Utilize containment to avoid dust generation, employ local exhaust ventilation, handle in well-ventilated areas, do not eat, drink or smoke during handling; use mechanical aids or protective measures for heavy loads
Hygiene: Wash thoroughly with soap and water after use, remove contaminated clothing and launder before reuse, practice good industrial hygiene
Storage: Store in tightly closed containers, in a cool, dry, well-ventilated place, away from foodstuffs, acids, and incompatible materials; ensure secure location to avoid unauthorized access, clearly label all storage vessels
Storage Temperature: Ambient conditions, avoid excessive heat, moisture
Engineering Controls: Local exhaust ventilation, fume hood, dust extraction systems; maintain airborne concentrations below regulatory limits
Personal Protective Equipment: NIOSH-approved respirator suitable for particulates, chemical resistant gloves (nitrile or neoprene), safety goggles or full face shield, chemical-resistant clothing and foot protection
Work Practice Controls: Always wash hands after handling, do not use contact lenses when handling powder, separate work and eating areas, implement routine cleaning of surfaces
Exposure Limits: OSHA PEL arsenic 0.01 mg/m³ (as As), copper dusts/mists 1 mg/m³; refer to current state, federal occupational guidelines
Environmental Controls: Use containment and spill prevention to minimize environmental loading
Appearance: Green crystalline powder
Odor: Odorless
Odor Threshold: Not applicable
pH: Not determined
Melting Point: Decomposes before melting at approximately 200°C
Boiling Point: Not applicable (decomposes)
Solubility: Slightly soluble in water, insoluble in organic solvents
Vapor Pressure: Not applicable
Density: 4.38 g/cm³
Evaporation Rate: Not applicable
Partition Coefficient (n-octanol/water): Not determined
Autoignition Temperature: Not flammable
Flash Point: Not combustible
Chemical Stability: Stable under recommended storage conditions
Reactivity: Low reactivity, but can react with acids to liberate toxic gases
Incompatible Materials: Strong acids, strong oxidizers, reducing agents, ammonium salts
Hazardous Decomposition Products: Arsenic oxides, copper fumes, toxic gases under fire or hydrolysis
Polymerization: Will not occur
Conditions to Avoid: Excessive heat, moist conditions, contact with acids, generation of dust
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Toxicity: Oral LD50 (rat): approx. 27 mg/kg (as arsenic trioxide); highly toxic by ingestion and inhalation
Chronic Toxicity: Long-term exposure can lead to carcinogenicity, liver damage, kidney damage, neurological symptoms, skin changes
Symptoms of Overexposure: Abdominal pain, vomiting, diarrhea, muscle cramps, neuropathy, pigmentation changes, respiratory irritation
Carcinogenicity: IARC Group 1, known human carcinogen (arsenic compounds)
Sensitization: Can cause allergic reactions in sensitized individuals
Mutagenicity: Arsenic compounds are genotoxic in multiple test systems
Reproductive Toxicity: Developmental effects noted in animal studies with arsenic compounds
Ecotoxicity: Highly toxic to fish, aquatic invertebrates, birds and mammals; LC50 (fish) low mg/L range, chronic persistence in environment
Persistence and Degradability: Arsenic is not biodegradable, bioaccumulates in aquatic and terrestrial ecosystems, persists for many years
Bioaccumulation: Copper and arsenic can accumulate in aquatic life, enter food chain, ecological risk significant
Mobility in Soil: Binds to soil particles, limited groundwater migration unless pH is low
Other Adverse Effects: Pollutes water and soil, may harm endangered species, contaminates crops and drinking water if not managed carefully
Waste Treatment Methods: Treat as hazardous waste, use licensed hazardous waste contractor, incineration not advised due to fume generation
Product Disposal: Place in sealed, labeled containers; avoid landfill or open dumping
Contaminated Packaging: Dispose of as hazardous waste after thorough decontamination or via specialized chemical waste facilities
Regulatory Requirements: Comply with national, regional, and local hazardous waste regulations; EPA RCRA, CERCLA, and DOT guidance often applies
Reuse/Recycling: Not permitted due to high toxicity, do not attempt to recycle material or packaging for alternate purposes
UN Number: UN 2789
Proper Shipping Name: Arsenic compound, solid, n.o.s. (copper(II) arsenate)
Transport Hazard Class: 6.1 (Toxic substance)
Packing Group: II
Labels Required: Toxic substance label
Special Precautions: Secure packaging to avoid spillage, do not transport with food or feedstuffs, emergency procedures in place for spillage or exposure
Environmental Hazards: Marine pollutant, avoid waterway transit if possible; report spillages to proper authorities
OSHA: Arsenic and copper compounds strictly regulated, permissible exposure set at very low levels; both considered hazardous chemicals in workplace
EPA: Listed hazardous substance under CERCLA; subject to reporting if releases exceed reportable quantity, registration required for wood treatment uses
TSCA: Listed, restrictions apply
SARA Title III: Subject to emergency planning and community right-to-know reporting based on arsenic content
International: Classified by IARC as Group 1 carcinogen; subject to transport regulations under IMDG and IATA for export/import
Local Regulations: State and municipal standards often stricter than federal; disposal and use often banned or severely restricted in residential applications
