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Product Name: Silver Arsenate
Chemical Formula: Ag3AsO4
CAS Number: 7784-46-5
Use: Laboratory reagent, chemical synthesis
Synonyms: Trisilver arsenate, Argentic arsenate
Supplier: Manufacturer information including address, phone number for emergencies and technical support
Emergency Contact: National Poison Center, local emergency hotline
GHS Classification: Acute Toxicity (Oral, Inhalation, Dermal): Category 2
Signal Word: Danger
Hazard Statements: Fatal if swallowed, in contact with skin, or inhaled. Suspected of causing cancer. Causes damage to organs through prolonged or repeated exposure. Environmental hazard due to arsenic content.
Pictograms: Skull and crossbones, Health Hazard, Environment
Precautionary Statements: Avoid all contact. Use only outdoors or in a well-ventilated area. Wear proper PPE. Prevent release to environment.
Additional Risks: May cause irritation of eyes, skin, and respiratory tract. Chronic exposure increases cancer risk and affects organs like liver, lungs, skin.
Chemical Name: Silver Arsenate
CAS Number: 7784-46-5
Concentration: 100% (Pure substance)
Relevant Impurities: None established for reagent grade material
Molecular Weight: 452.61 g/mol
Hazardous Components: Arsenic (As), Silver (Ag)
Eye Contact: Immediately rinse eyes with plenty of water for at least 15 minutes, lifting eyelids to flush thoroughly. Seek immediate medical attention.
Skin Contact: Remove contaminated clothing. Wash skin with soap and plenty of water for 15 minutes. Get medical help right away.
Inhalation: Move to fresh air as fast as possible. If breathing is difficult, give oxygen. Provide artificial respiration if victim isn’t breathing. Call emergency medical services.
Ingestion: DO NOT induce vomiting. Rinse mouth with water if conscious. Seek medical advice immediately. Show this sheet to the doctor.
Symptoms to Watch: Nausea, vomiting, abdominal pain, diarrhea, headache, respiratory distress, weakness, skin or eye redness, skin burns.
Suitable Extinguishing Media: Use water spray, dry chemical, foam, or carbon dioxide. Prevent fire-fighting water from entering sewers or waterways.
Unsuitable Media: Avoid direct water jet on product.
Hazards: Material doesn’t burn, but heating can cause decomposition to toxic arsenic oxides and silver fumes.
Protective Equipment: Wear full protective gear, self-contained breathing apparatus, chemical resistant clothing.
Advice for Firefighters: Evacuate area, control run-off, avoid inhaling fumes.
Personal Precautions: Restrict access. Wear respiratory protection, gloves, chemical splash goggles, full protective clothing.
Environmental Precautions: Prevent contamination of soil and water systems. Do not flush into drains. Notify relevant government authorities if significant spill occurs.
Methods for Clean-Up: Ventilate area. Scoop up solids without generating dust, place in sealed containers for disposal. Decontaminate area using approved cleaning agents. Dispose of waste according to local regulations.
Avoidance: Avoid raising dust, avoid unprotected contact. Use only non-sparking tools.
Handling: Wear personal protection always. Keep containers tightly closed. Work only in chemical fume hood. Avoid inhaling dust and prevent ingestion. Handle with extreme care – do not eat, drink, or smoke while handling.
Storage: Store in cool, dry, well-ventilated area away from food and incompatible materials such as acids, reducing agents, sulfides. Keep container in secure, labeled area. Protect from moisture and direct sunlight.
Special Considerations: Store away from public access and restrict access to trained personnel.
Occupational Exposure Limits: Arsenic OSHA PEL 0.01 mg/m3 TWA, NIOSH REL 0.002 mg/m3 TWA. Silver OSHA PEL 0.01 mg/m3 TWA.
Engineering Controls: Use local exhaust ventilation. Eye wash station and safety shower in immediate area.
Personal Protection: Wear tight-fitting chemical safety goggles, full-face shield if splash risk. Wear chemical-resistant gloves (nitrile, neoprene), lab coat, long sleeves, closed shoes. Respiratory protection such as NIOSH-approved respirator if airborne dust present.
Hygiene Practices: Handle in accordance with safe laboratory practices – remove contaminated clothing, wash hands before eating or drinking, no contact lenses.
Environmental Controls: Prevent further release to air, water, or soil.
Appearance: Yellow-brown crystalline powder
Odor: Odorless
Melting Point: Decomposes above 400°C
Boiling Point: Not applicable (decomposes before boiling)
Solubility in Water: Insoluble
Density: Approximately 6.2 g/cm3
pH: Not available
Vapor Pressure: Not applicable
Flash Point: Not flammable
Partition Coefficient: Not applicable
Auto-ignition Temperature: Not applicable
Explosive Limits: Not relevant
Chemical Stability: Stable under recommended conditions of storage and handling.
Conditions to Avoid: Heat, humidity, direct sunlight, contact with acids and reducing agents.
Incompatible Materials: Strong acids, strong bases, reducing agents, sulfides.
Hazardous Decomposition Products: Releases toxic arsenic oxides, silver fumes if heated or exposed to strong acids.
Reactivity: Non-reactive under normal laboratory conditions.
Polymerization: Will not occur.
Acute Toxicity: Highly toxic through ingestion, inhalation, and skin contact. LD50 (oral/rat): data limited, arsenic compounds classified as extremely toxic.
Chronic Exposure: Significant risk of cancer, serious organ damage (skin, lungs, liver, kidneys), neurotoxicity, dermatologic changes, possible reproductive and developmental toxicity.
Irritation: Causes severe eye and skin irritation, burns.
Sensitization: Not classified as sensitizer but high risk due to arsenic.
Carcinogenicity: IARC Group 1 (carcinogenic to humans) for arsenic compounds.
Mutagenicity: Evidence for genetic damage linked to arsenic compounds.
Medical Conditions Aggravated: Pre-existing skin, liver, lung, kidney conditions.
Symptoms of Exposure: Gastrointestinal distress, respiratory depression, muscle weakness, headache, burning sensation, anemia, cardiovascular effects, rash.
Ecotoxicity: Very toxic to aquatic life due to arsenic and silver ions. May cause long-term adverse effects in the environment.
Persistence and Degradability: Not readily degradable. Arsenic does not break down, silver persists in environment.
Bioaccumulation: Both metals accumulate in plants, animals, and humans, creating risk up the food chain.
Mobility in Soil: Low mobility but can travel as dust or with runoff if improperly contained.
Other Information: Hazardous to water systems. Avoid release to environment. Comply with all environmental regulations.
Disposal Methods: Must be disposed of as hazardous waste according to local, regional, and national regulations. Do not pour down drains. Use a licensed chemical disposal company.
Waste Containers: Collect in leak-proof, clearly labeled containers, separate from incompatible wastes.
Contaminated Packaging: Dispose of or decontaminate according to approved procedures.
Additional Precautions: Notify authorities in case of significant release.
Do Not: Burn or incinerate. Avoid discharge to environment.
UN Number: UN1557
UN Proper Shipping Name: Arsenic compound, solid, n.o.s. (silver arsenate)
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: II
Labels: Toxic, Environmentally Hazardous
Marine Pollutant: Yes (contains arsenic and silver)
Special Transport Requirements: Package securely to prevent breakage, avoid spills, and use secondary containment. Notify carrier of hazardous nature.
OSHA: Listed as highly toxic, subject to strict workplace controls.
TSCA: Listed substance, chronic health risk.
SARA Title III: Subject to reporting under Sections 302, 304, 313 (arsenic compounds, silver compounds)
RCRA: Classified as hazardous waste due to arsenic and silver.
DSL/NDSL (Canada): Listed
EU REACH: Included in candidate list due to carcinogenic and toxic properties.
Other Countries: Subject to similar controls in Japan, Australia, and elsewhere as toxic chemical.
Workplace Warning: Employee training and regular risk assessment requirements.
