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Product Name: Copper Acetylarsenite
Other Names: Paris Green, Imperial Green, Schweinfurt Green
Chemical Formula: C4As2Cu3O12
CAS Number: 12002-03-8
Molecular Weight: 501.61 g/mol
Recommended Use: Pigment, insecticide (historic)
Supplier: Refer to local distributor; handle only by qualified personnel
Contact Information: Emergency phone numbers provided by local authorities
Classification: Acute toxicity (oral, inhalation, dermal), carcinogenicity, environmental hazard, specific target organ toxicity
Hazard Statements: Toxic if swallowed, in contact with skin, or if inhaled. Causes damage to organs through prolonged or repeated exposure. Suspected of causing cancer. Very toxic to aquatic life with long lasting effects.
Signal Word: Danger
Pictograms: Skull and crossbones, health hazard, environment
Potential Health Effects: Headache, vomiting, convulsions, abdominal pain, neurological effects, liver and kidney damage
Routes of Exposure: Ingestion, inhalation, skin contact, eye contact
Copper(II) acetylarsenite: 100%
Chemical Components: Copper compounds (approx. 31.9%), arsenic compounds (approx. 58.7%), acetyl radical (approx. 9.4%)
Impurities: Trace amounts of other metal salts, moisture may be present depending on handling and storage
Inhalation: Move to fresh air immediately. Remove contaminated clothing. Provide artificial respiration if not breathing. Seek medical attention immediately.
Skin Contact: Remove contaminated clothing. Rinse skin with large amounts of water for at least 15 minutes. Soap can help remove residues. Get medical attention urgently.
Eye Contact: Rinse eyes with lukewarm water for at least 15 minutes, lifting lower and upper eyelids occasionally. Do not rub eyes. Seek medical care without delay.
Ingestion: Do not induce vomiting. Rinse mouth with water. Never give anything by mouth to an unconscious person. Seek immediate medical help.
Advice for doctors: Symptoms may be delayed. Arsenic poisoning requires specific chelation therapy. Monitor for respiratory and cardiovascular complications.
Suitable Extinguishing Media: Use dry chemical, foam, or carbon dioxide. Avoid water streams as contaminated runoff is hazardous.
Unsuitable Extinguishing Media: Avoid water if possible to prevent spillage.
Hazardous Combustion Products: Produces arsenic oxides, copper oxides, toxic fumes
Protective Equipment: Wear self-contained breathing apparatus, full body chemical protective clothing, chemical resistant gloves and boots
Firefighting Procedure: Approach from upwind. Cool containers exposed to fire from a distance. Prevent spill and fire water from entering drains and watercourses.
Personal Precautions: Evacuate non-essential personnel. Wear appropriate chemical protective equipment, including respirators, gloves, protective goggles, and full-body suit.
Environmental Precautions: Prevent material from entering soil, sewers, waterways, and confined spaces. Notify authorities of significant spills.
Clean-Up Methods: Contain and collect spillage using non-sparking tools and inert absorbent (e.g., vermiculite, sand). Place in clearly labeled, sealed containers for disposal. Wash contaminated surfaces with plenty of water. Ventilate the area extensively.
Decontamination: Decontaminate area with a solution of sodium hypochlorite. Properly dispose of all cleanup materials as hazardous waste.
Handling: Use only in well-ventilated fume hoods or outdoors. Minimize dust generation and accumulation. Wear appropriate PPE including gloves, goggles, impervious clothing, and suitable respirators. Wash hands thoroughly after handling. Never eat, drink, or smoke in work areas.
Storage Conditions: Store in tightly sealed containers, away from food, feed, and incompatible substances (strong acids, strong bases, oxidizers). Keep cool, dry, and in a locked, secure chemical storage area.
Special Precautions: Keep away from children and unauthorized personnel. Post hazard warning signs on storage cabinets. Inspect regularly for leaks or damage.
Engineering Controls: Work in ventilated areas or chemical fume hoods. Install local exhaust ventilation to minimize airborne dust concentrations.
Exposure Limits: OSHA PEL for arsenic (inorganic): 0.01 mg/m³ (Time Weighted Average). ACGIH TLV for copper dusts and mists: 1 mg/m³.
Personal Protection: Wear disposable respirators with high-efficiency particulate (HEPA) filters. Use chemically resistant gloves (nitrile, neoprene, or PVC), safety goggles with side shields, face shields, and full-body chemical resistant suits.
Hygiene: Doff contaminated clothing at the end of work sessions. Shower immediately after potential exposure. Store work clothes separately from personal clothing.
Appearance: Bright green, crystalline or powder
Odor: Odorless
Odor Threshold: Not applicable
pH: Not applicable
Melting Point/Freezing Point: Decomposes at high temperatures without melting
Boiling Point: Not applicable
Flash Point: Not flammable
Flammability: Not a combustible solid
Explosive Properties: Does not present explosive risk
Oxidizing Properties: Not classified as an oxidizer
Vapor Pressure: Negligible
Solubility in Water: Virtually insoluble
Density: 6.2 – 6.8 g/cm³
Partition Coefficient: Not available
Decomposition Temperature: Decomposes, producing toxic fumes (arsenic oxides and copper oxide)
Viscosity: Not applicable
Chemical Stability: Stable under properly controlled storage conditions; avoid exposure to moisture and sunlight
Reactivity: Not reactive under normal use and handling
Hazardous Reactions: Contact with acids or acidic moisture releases toxic arsine gas and copper ions
Incompatible Materials: Strong acids, strong bases, strong oxidizing agents
Decomposition Products: Arsenic oxides, copper oxides, carbon oxides
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Acute Toxicity: Extremely toxic by ingestion, inhalation, and skin absorption (LD50 oral, rat: 38 mg/kg for arsenic compounds)
Symptoms: Intense headache, metallic taste, vomiting, diarrhea, convulsions, peripheral neuropathy, organ failure
Chronic Effects: Long-term exposure causes skin lesions, peripheral nerve damage, increased cancer risk, liver and kidney impairment
Carcinogenicity: IARC: Group 1 (carcinogenic to humans, related to arsenic content)
Mutagenicity: Evidence of genetic mutations in lab studies primarily due to arsenic
Reproductive Toxicity: May cause damage to fertility and unborn child (data for arsenic compounds)
Sensitization: Not reported, but avoid repeated skin contact
Target Organs: Skin, liver, kidneys, lungs, nervous system
Ecotoxicity: Highly toxic to aquatic organisms and plants; copper and arsenic ions disrupt cell functions and photosynthesis in aquatic environments
Persistence and Degradability: Persistent in soil and water; does not break down easily
Bioaccumulation: Both copper and arsenic bioaccumulate in fish, invertebrates, and terrestrial plants; potential for food chain contamination
Mobility in Soil: Limited by low solubility, but still poses long-term contamination risk in groundwater and sediments
Other Adverse Effects: Alters soil microbiota, inhibits plant root development, can kill beneficial insects and pollinators
Disposal Methods: Treat as hazardous waste. Do not dispose of in regular garbage, sewers, or natural water sources. Send to licensed chemical waste disposal facility.
Packaging: Use sealed, chemically resistant containers clearly labeled for hazardous materials. Double bag powders to prevent dust.
Disposal Regulatory Compliance: Follow local, regional, and national regulations governing arsenic and heavy metal waste. Documentation and manifesting often required.
Contaminated Packaging: Decontaminate or treat packaging as hazardous waste. Do not reuse containers.
UN Number: 1586
UN Proper Shipping Name: Arsenic compound, solid, n.o.s. (contains copper acetylarsenite)
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: II
Environmental Hazards: Marine pollutant
Special Precautions: Protect from moisture and physical damage. Documentation and placarding must comply with ADR/RID/IMDG/IATA requirements.
Transport Labels: Toxic, Marine Pollutant
U.S. OSHA Status: Regulated hazardous substance. Stringent use and exposure controls apply under OSHA and EPA.
TSCA: Substance subject to Toxic Substances Control Act reporting and restriction.
SARA Title III: Listed on Section 302/304 (Extremely Hazardous Substances) and Section 313 (Toxics Release Inventory - TRI)
RCRA: Regulated as hazardous waste (EPA Hazardous Waste Number: D004, D005 for arsenic, copper)
Canadian WHMIS: Classified as toxic and hazardous
EU REACH: Substance of Very High Concern (SVHC) as arsenic and copper compounds are restricted
Other International Regulations: UN GHS Harmonized System: Acute toxicity, chronic aquatic toxicity hazard class
Label Requirements: Toxic, environmental hazard, specific exposure and disposal information on label
