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Product Name: Zinc Arsenide
Chemical Formula: Zn3As2
CAS Number: 12006-40-7
EC Number: 234-591-7
Synonyms: Trizinc diarsenide
Recommended Use: Research and industrial applications as a semiconductor material
Manufacturer: Manufacturer’s address, emergency contact number, and supplier identification details
Classification: Acute toxicity (oral, inhalation, dermal); carcinogenicity; specific target organ toxicity (repeated exposure)
Risk Phrases: May cause cancer, fatal if swallowed, toxic by inhalation and skin contact
Hazard Symbols: Skull and crossbones, Health hazard
GHS Label Elements: Danger! Very toxic to humans by all routes of exposure, environmental hazard
Chemical Name: Zinc Arsenide
Common Name: Zinc diarsenide
Purity: >98%
Hazardous Constituents: Zinc (~67%), Arsenic (~33%)
Impurities: Trace metals may be present, usually below 1%
Inhalation: Move person to fresh air immediately, keep at rest, seek medical attention even for minor exposure
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water, get medical help promptly
Eye Contact: Rinse cautiously with water for at least 15 minutes, lift eyelids occasionally, get immediate medical assistance
Ingestion: Do not induce vomiting, rinse mouth with water if conscious, seek urgent medical attention; risk of arsenic poisoning is severe
Important Symptoms: Severe headache, dizziness, nausea, respiratory distress, skin irritation, risk of delayed symptoms
Suitable Extinguishing Media: Dry sand, dry powder, carbon dioxide; avoid water as it may react with released arsenic
Hazardous Combustion Products: Arsenic and zinc oxides, toxic fumes possible
Special Protective Equipment: Self-contained breathing apparatus, full protective firefighting clothing
Special Hazards: Combustion releases hazardous, poisonous arsenic oxide gases, risk to responders high in confined spaces
Personal Precautions: Leave the area immediately if safe to do so, ventilate, use full-face respirator, chemical-resistant gloves and suit
Spill Response: Contain spill, avoid dust formation, scoop up without creating aerosols, keep away from drains and soils
Environmental Precautions: Prevent entry into sewers, waterways, soil; notify environmental authorities if contamination risk exists
Cleanup Methods: Use inert materials for absorption, seal in tight chemical waste containers, decontaminate area thoroughly with wet cleaning methods
General Handling: Use inside closed processes or fume hoods, avoid any contact with skin, eyes, and clothing
Safe Storage: Store in tightly sealed containers, away from moisture, food, feed, and incompatible materials like acids
Special Conditions: Keep locked up in a dedicated, well-ventilated, cool, and dry chemical storage area
Technical Measures: Ground all equipment used in handling, prevent generation of dust or fragments
Occupational Exposure Limits: Arsenic (as As): OSHA PEL 0.01 mg/m³, ACGIH TLV 0.01 mg/m³ (as As)
Engineering Controls: Use explosion-proof exhaust ventilation, closed systems, automatic handling if possible
Personal Protective Equipment: Chemical-resistant gloves (nitrile, neoprene), full-face respirator with P100/arsenic cartridges, chemical goggles, lab coat, chemical apron
Hygiene Measures: Wash hands thoroughly after use, do not eat or drink in work area, remove contaminated clothing before leaving the workplace
Appearance: Gray crystalline solid or dark powder
Odor: Odorless
Molecular Weight: 388.0 g/mol
Melting Point: 651°C
Boiling Point: Not available, decomposes on heating
Solubility: Insoluble in water, reacts with acids
Density: 5.5–5.7 g/cm³
Vapor Pressure: Negligible at room temperature
Other Properties: Stable under recommended conditions, cautions for dust formation
Stability: Stable under dry, normal conditions and proper storage
Conditions to Avoid: Exposure to moisture, acids, oxidizers, heat, open flame
Incompatible Materials: Strong acids, oxidizers, halogens
Hazardous Decomposition: Produces arsenic oxides and zinc oxide on thermal decomposition
Polymerization: No hazardous polymerization expected
Acute Toxicity: Highly toxic, LD50 (oral/rat): 2–10 mg/kg (as arsenic); fatal by ingestion, inhalation, or dermal absorption
Chronic Effects: Cumulative arsenic exposure damages skin, liver, kidneys, cardiovascular and nervous systems; increased cancer risk demonstrated
Carcinogenicity: Classified by IARC and NTP as Group 1 human carcinogen (arsenic compounds)
Routes of Exposure: Inhalation, dermal, oral
Other Effects: Skin lesions, peripheral neuropathy, respiratory distress, gastrointestinal symptoms, hematopoietic changes
Aquatic Toxicity: Highly toxic to aquatic organisms, long-term damage to aquatic environments
Persistence and Degradability: Arsenic compounds persistent; do not degrade readily in soil or water
Bioaccumulation Potential: Strong tendency to accumulate in organisms, biomagnifies up the food chain
Mobility in Soil: Moderately mobile; risks leaching and groundwater contamination
Other Information: Major concerns for ecosystems; environmental releases require immediate reporting and cleanup
Disposal Methods: Dispose as hazardous waste under EPA RCRA regulations; incineration not recommended because of arsenic volatility
Disposal Packaging: Use corrosion-resistant, sealed containers, label clearly for arsenic toxicity
Precautions: Do not release to environment, avoid drains
Local Regulations: Comply with all national, regional, and local hazardous waste disposal rules
UN Number: 1557
Proper Shipping Name: Arsenic compound, solid, n.o.s. (contains zinc arsenide)
Transport Hazard Class: 6.1 (toxic substances)
Packing Group: I (highest danger level)
Labels: Toxic, Environmentally Hazardous
Special Transport Requirements: Secure, sealed packaging; emergency procedures for leaks or accident; only trained carriers
OSHA: Arsenic-containing compounds listed as hazardous substances
TSCA: Listed in the Toxic Substances Control Act Inventory
SARA Title III: Subject to reporting under Sections 302 (EHS), 313 (TRI), and 304 (release reporting)
REACH: Regulated as a substance of very high concern (SVHC), subject to authorization and restrictions in the EU
Other: Subject to additional international, federal, and state-level rules on use, storage, and disposal of arsenic compounds
