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Product Name: Barium Arsenite
Chemical Formula: BaAsO3
CAS Number: 12256-68-1
Synonyms: Arsenous acid, barium salt
Recommended Use: Laboratory and research applications
Manufacturer: Chemical supply companies specializing in inorganic compounds
Emergency Contact Number: Local Poison Control Center, Hazmat emergency services
Contact Address: Check the specific source or supplier’s official documentation for detailed contact information
Risk Phrases: Toxic if swallowed, inhaled, or absorbed through skin; possible carcinogen; causes damage to organs.
Hazard Classes: Acute toxicity (oral, inhalation, dermal), carcinogenicity, specific target organ toxicity.
Signal Word: Danger
Pictograms: Skull and crossbones, health hazard
Target Organs: Lungs, skin, nervous system, kidneys.
Symptoms of Exposure: Abdominal pain, vomiting, convulsions, skin and eye irritation, respiratory distress, weakness, confusion, and severe cases can lead to death.
OSHA Classification: Hazardous chemical
Chemical Name: Barium Arsenite
Common Name: Barium arsenite
Concentration: 100% (in pure product)
Chemical Family: Inorganic arsenic and barium compound
Impurities/ Stabilizing Additives: No significant impurities in analytical grade; potential trace contaminants depending on production method
Inhalation: Immediate removal from exposure into fresh air, seek medical attention right away, apply artificial respiration if breathing stops.
Skin Contact: Remove contaminated clothing, wash thoroughly with soap and water for at least fifteen minutes, medical attention needed.
Eye Contact: Flush eyes with plenty of water for at least fifteen minutes, keep eyelids open, consult a physician.
Ingestion: Do not induce vomiting, rinse mouth with water, give water to dilute only if victim is conscious, call medical professionals urgently.
Most Important Symptoms/Effects: Gastrointestinal upset, muscle weakness, organ failure, severe poisoning or fatality unless treated quickly
Notes for Physician: Monitor for symptoms of arsenic and barium toxicity, consider chelation therapy and supportive interventions
Suitable Extinguishing Media: Use dry chemical, carbon dioxide, or appropriate foam.
Unsuitable Extinguishing Media: Do not use water jets as contamination might spread.
Specific Hazards: Barium and arsenic oxides may be produced; fumes are toxic.
Protective Equipment: Full protective gear required; self-contained breathing apparatus.
Firefighting Advice: Approach fire from upwind to avoid toxic gas, keep containers cool, and isolate area around hazardous material.
Personal Precautions: Wear heavy-duty gloves, impervious clothing, and full-face respiratory protection.
Emergency Procedures: Evacuate non-essential personnel, restrict unnecessary movement in contaminated zones.
Containment: Prevent release into drains, surface and ground waters, isolate spill zone using inert absorbents.
Spill Cleanup Methods: Use non-sparking tools to collect solid or powder, seal in labeled, leak-proof containers.
Disposal: Dispose of waste following hazardous material protocols laid out by regulatory agencies.
Precautions for Safe Handling: Avoid all routes of exposure, use only in certified fume hoods, do not eat or drink while handling.
Storage Requirements: Keep sealed in corrosion-resistant containers under dry, cool, well-ventilated conditions, lock away from incompatible chemicals.
Special Instructions: Post clear hazard signage, restrict access to trained personnel, maintain thorough documentation of inventory movement.
Control Parameters: Occupational exposure limits for arsenic and barium compounds must not be exceeded (OSHA PELs: Arsenic—0.01 mg/m³; Barium—0.5 mg/m³).
Engineering Controls: Closed-systems only, laboratory-grade ventilation, dedicated local exhaust hoods
Personal Protective Equipment: Chemical splash goggles, heavy-duty gloves compatible with inorganic arsenicals, respiratory protection in case of airborne dust, full-length lab coat or disposable protective suit, chemical-resistant footwear
Hygiene Measures: Decontaminate clothing and exposed skin after use, prohibit eating, drinking, or smoking near the work area, regular medical surveillance for workers routinely exposed.
Appearance: White to off-white crystalline solid
Odor: Odorless
Melting Point: Decomposes at high temperature
Boiling Point: Not applicable (decomposes before boiling)
Solubility: Insoluble in water, soluble in strong acids
Vapor Pressure: Not measurable at room temperature
Density: Approximately 5.2 g/cm³
pH: Not applicable
Molecular Weight: 296.14 g/mol
Other Data: Stable in dry air, sensitive to light and humidity over extended periods
Chemical Stability: Remains stable under appropriate storage conditions.
Reactive Conditions: Unstable near strong oxidizers, acids, and heated environments.
Hazardous Decomposition: Emits highly toxic barium oxides, arsenic trioxide, and other volatile arsenic oxides.
Polymerization: Does not polymerize.
Incompatible Materials: Avoid direct contact with strong acids, oxidizers, and moisture.
Routes of Exposure: Inhalation, ingestion, dermal, eye contact
Acute Effects: Severe abdominal pain, diarrhea, vomiting, hypotension, muscle weakness, possible arrhythmias, neurological effects
Chronic Effects: Cumulative arsenic poisoning—skin abnormalities, neuropathy, increased risk of internal cancers, kidney and liver dysfunction, barium-related cardiovascular and respiratory problems
Carcinogenicity: Arsenic classified as Group 1 carcinogen (IARC), known to cause cancer in humans
Reproductive Toxicity: Risk to fetal development with significant exposure, teratogenic effects noted in animal studies
Sensitization: Prolonged contact may lead to dermal sensitization
LD50 (oral, rat): Data not widely available; referenced as extremely toxic in mammalian studies
Ecotoxicity: Toxic to aquatic organisms, even at low concentrations; highly persistent in sediment and soils, disrupts aquatic food chains
Persistence and Degradability: Not readily biodegradable, long-term risk for bioaccumulation
Mobility: Moves through soil and water systems as insoluble particles or as dissolved ions under acidic conditions
Bioconcentration: Barium and arsenic can concentrate in plants, fish, and animals, risk of entering human food supply
Other Adverse Effects: Alters microbial communities in soil and water, threatens agricultural and wild plants in contaminated areas
Waste Disposal Methods: Treat as hazardous waste, subject to federal and local chemical disposal regulations.
Container Handling: Use only secure, sealed containers for transport and disposal; decontaminate empty vessels before recycling or disposal.
Recommended Disposal: Arrange pickup by licensed hazardous waste management company, avoid landfill unless permitted for such materials
Do Not: Flush down drains or dispose with general laboratory trash
Special Precautions: Record all disposals, follow manifest and chain-of-custody procedures as mandated by hazardous materials tracking laws
UN Number: 1564 (for toxic inorganic substances, barium compounds)
Proper Shipping Name: Toxic solid, inorganic, n.o.s. (Barium Arsenite)
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: II (Substances presenting medium danger)
Labeling Requirements: Toxic, environmentally hazardous substance symbols
Special Precautions For Transport: Use certified hazardous materials carriers, segregate from food and animal feeds, specified documentation and emergency response guide needed per shipment
IMDG Class: 6.1, marine pollutant
Federal/ International Regulations: Subject to TSCA, CERCLA, SARA Title III, and RCRA hazardous substance restrictions in the United States; regulated as a toxic substance in the EU by REACH, listed by Canada’s WHMIS.
Threshold Reporting: Release quantities exceeding 1 pound must be reported to the EPA under CERCLA.
OSHA Standard: Strict controls due to acute toxicity and carcinogenicity.
State/Local Regulations: Many regions list this compound as an acutely toxic or priority pollutant; check with local environmental and occupational authorities.
Labeling: Requires clear hazard warnings, skull and crossbones, chemical hazard classification, PPE pictograms; safety instructions must be provided in accessible language.
Permissible Exposure Limits: Subject to national and international workplace safety standards, typically much lower than for most other chemicals.
Recordkeeping: Employers must maintain records of storage, use, exposure, and accident history for compliance and health surveillance purposes.
