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Product Name: Mercuric Arsenide
Chemical Formula: Hg3As2
CAS Number: 12044-13-6
Recommended Use: Laboratory research, chemical synthesis
Manufacturer: Chemical supply companies specializing in hazardous inorganic compounds
Contact Information: Emergency line, safety data resource center, technical support extension
Synonyms: Trimercury diarsenide, Mercury arsenide
GHS Classification: Acute toxicity (oral, dermal, inhalation), Skin corrosion/irritation, Carcinogenicity Category 1B, Specific organ toxicity
Pictograms: Skull and crossbones, Corrosive, Health hazard
Signal Word: Danger
Hazard Statements: Causes severe damage to organs, Fatal if ingested or inhaled, Highly toxic on skin absorption, Suspected of causing cancer, May damage fertility
Precautionary Statements: Avoid all contact, Use respirators and protection, Do not eat, drink, or smoke during handling, Seek medical advice if exposed
Target Organs: Nervous system, Kidneys, Liver, Respiratory system
Chemical Name: Mercuric Arsenide
Concentration: 100%
Component 1: Mercury (Hg), 69% by mass
Component 2: Arsenic (As), 31% by mass
Impurities: Trace inorganic contaminants from synthesis
Mixture: No
General Advice: Call emergency services and provide MSDS, Remove source of exposure immediately
Inhalation: Move victim to fresh air, provide artificial respiration if breathing stops, administer oxygen if affected, immediate medical attention
Skin Contact: Remove contaminated clothing, rinse skin with running water for fifteen minutes at least, seek urgent medical help
Eye Contact: Flush with gentle stream of water for up to twenty minutes, keep eyes open, call poison control while rinsing
Ingestion: Never induce vomiting, rinse mouth, do not give liquids unless under direct medical instruction, hospital transfer without delay
Self-protection: Wear respirator and avoid entering area unless fully protected
Suitable Extinguishing Media: Dry chemical powder, carbon dioxide, sand, use water spray only for cooling containers away from fire
Unsuitable Media: Do not use water streams, contact with water may enhance formation of toxic vapors
Hazardous Combustion Products: Mercury vapor, arsenic trioxide, toxic metal fumes
Special Protective Equipment for Firefighters: Positive-pressure self-contained breathing apparatus, full chemical protective suit
Advice for Firefighters: Approach from windward side, avoid runoff, evacuate personnel to a safe distance
Explosion Risk: Reacts violently with strong oxidizers under heat, risk of container rupture under fire
Personal Precautions: Evacuate area, restrict access, ventilate in all directions, avoid dust or particulate formation, wear full-body chemical-resistant suit
Environmental Precautions: Prevent product from entering drains, waterways, soil, contain spill using earth or sand barriers
Cleanup Methods: Pick up mechanically with non-sparking tools, store in labeled, sealed hazardous waste containers, do not use domestic equipment
Decontamination: Clean contaminated surfaces with lime or sodium thiosulfate, double-check for residues
Disposal: Treat as hazardous waste, hand over to licensed chemical disposal contractor
Precautions for Safe Handling: Only trained personnel should handle, use fume hood and closed process systems, keep containers tightly sealed, minimize quantity kept out, avoid inhalation and skin exposure
Hygiene Measures: Wash hands and face before breaks and after work, prohibit eating or drinking near use, remove contaminated clothing immediately
Storage Conditions: Store in corrosion-resistant, tightly sealed containers, keep in cool, dry, well-ventilated, locked chemical store, segregate from food and incompatible chemicals
Incompatibilities: Avoid storing with oxidizers, acids, alkalis, or flammable materials
Storage Class: Highly toxic substances, regulated under local chemical safety guidelines
Exposure Limits: Mercury (TWA 0.025 mg/m3 OSHA/NIOSH), Arsenic (TWA 0.01 mg/m3 OSHA/NIOSH)
Engineering Controls: Local exhaust ventilation, glove box enclosure, gas detection alarms for mercury vapor
Respiratory Protection: Full-face respirator with P3 filter, supplied air suits for spill response
Eye Protection: Chemical splash goggles, face shield
Hand Protection: Heavy-duty gloves, double-layer nitrile or neoprene
Body Protection: Chemical-resistant full suit, closed footwear, lab apron
Environmental Controls: Waste air filters, sealed drainage, secondary containment
Appearance: Gray-black crystalline solid, metallic luster, odorless
Melting Point: 240°C (464°F)
Boiling Point: Decomposes before boiling
Density: 8.1–8.7 g/cm3
Solubility: Insoluble in water, slowly decomposes in acids with release of toxic vapors
Vapor Pressure: Negligible at room temperature
Flash Point: Not applicable
pH: Not applicable
Auto-ignition Temperature: Not applicable
Odor Threshold: No detectable odor
Chemical Stability: Stable in dry, cool conditions, sensitive to moisture, exposure to light, and heat
Possibility of Hazardous Reactions: Reacts with strong oxidizers, generating heat and release of toxic mercury and arsenic gases
Conditions to Avoid: Moisture, heat, direct sunlight, sources of ignition, reactive chemicals
Incompatible Materials: Acids, oxidizers (chlorine, peroxides), ammonia, halogens
Hazardous Decomposition Products: Mercury vapors, arsenic oxides, other toxic fumes
Acute Toxicity: Lethal in small quantities; oral LD50 for rats estimated below 10 mg/kg
Chronic Toxicity: Can cause irreversible damage to nervous system, kidneys, liver with repeated exposure, increased risk of cancer
Routes of Exposure: Inhalation, ingestion, skin absorption
Symptoms: Nausea, vomiting, diarrhea, violent abdominal pain, tremors, loss of coordination, vision disturbance, respiratory failure
Carcinogenic Effects: Classified carcinogen by OSHA, NTP, IARC
Specific Target Organ Toxicity: Multiple systemic organs upon single or repeated exposure
Mutagenicity: Proven chromosomal damage in animals
Reproductive Toxicity: Risks to fertility and unborn child proven in animal studies
Aquatic Toxicity: Extremely toxic for aquatic life, persistence and accumulation expected in organisms
Persistence and Degradability: Non-biodegradable, accumulates in sediments
Bioaccumulation Potential: High, both mercury and arsenic rapidly move up the food chain
Mobility in Soil: Tends to bind tightly to soil particles, possibility of slow release into water systems
Other Adverse Effects: Long-lasting damage to microflora, risk of secondary poisoning higher-order animals, fish, birds
Waste Treatment Methods: Dispose of using licensed hazardous waste handlers, incineration prohibited, use only chemical-specific neutralization, do not mix with municipal waste
Contaminated Packaging: Treat as product waste, triple rinse, send for hazardous waste processing
Precautions: Maintain all records, submit hazardous manifest, follow local and international legal requirements
UN Number: UN 2025
Transport Hazard Class: 6.1 (Toxic Substances)
Packing Group: I (highest risk level)
Proper Shipping Name: Mercuric compounds, solid, n.o.s. (Mercuric Arsenide)
Labeling Requirements: Toxic, environmentally hazardous substance
Special Precautions: Ship in corrosion-resistant sealed containers, insulated from moisture, protective over-pack required
Transport Regulations: Fully regulated by IATA, ADR, IMDG, DOT
OSHA: Subject to strict occupational exposure limits for both mercury and arsenic compounds
EPA: Designated hazardous waste under RCRA, subject to CERCLA release reporting, restrictions under TSCA
EU Classification: Extremely toxic, Carcinogen Category 1B, Environmental Hazard (H400, H410)
REACH Registration: Required for import or manufacture above threshold quantities
Other Local Regulations: Handle according to regional and national chemical safety and environmental protection laws, significant restrictions on sale, possession, transport
