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Chemical Name: Octabromobiphenyl
Common Synonyms: OBB, Octabromo-1,1'-biphenyl
Chemical Formula: C12H2Br8
Appearance: Off-white to yellowish powder
Use: Flame retardant in plastics, electronics, and textiles
Odor: Odorless
Hazard Class: Chronic toxicant with potential for environmental persistence
Routes of Exposure: Inhalation, skin contact, ingestion
Health Risks: May cause irritation to skin and eyes, suspected carcinogen, potential neurotoxicity
Environmental Concerns: Highly persistent, bioaccumulative, toxic to aquatic organisms
Regulatory Status: Some regions restrict or ban use, flagged under international treaties targeting persistent organic pollutants
Main Component: Octabromobiphenyl (C12H2Br8), typically found at purity levels above 90% in industrial samples
Impurities: Traces of lower or higher brominated biphenyls
Type: Polybrominated diphenyl derivative used in flame-retardant blends
Inhalation: Remove to fresh air, monitor for respiratory symptoms, seek medical attention for lingering discomfort
Skin Contact: Wash exposed skin with soap and plenty of water, remove contaminated clothing
Eye Contact: Rinse eyes immediately with running water for at least 15 minutes and consult a healthcare provider
Ingestion: Do not induce vomiting, seek medical help promptly
Suitable Extinguishing Media: Dry chemical powder, carbon dioxide, foam, water spray
Hazardous Decomposition: Releases hydrogen bromide, bromine fumes, and potentially toxic biphenyls
Protective Equipment: Full protective clothing, self-contained breathing apparatus
Special Precautions: Avoid breathing dust, fumes, or combustion products
Personal Protection: Chemical-resistant gloves, goggles, dust mask or respirator
Spill Response: Avoid generating dust, scoop up solid material and place in secure container, ventilate affected area
Environmental Cleanup: Prevent runoff to drains and water bodies, follow disposal guidelines closely
Handling Practices: Use only with proper local exhaust ventilation, avoid any contact with skin or eyes, never eat or smoke near the substance
Storage Conditions: Store in a tightly sealed container, away from sunlight, heat sources, strong oxidizers
Labeling: Use clear hazard labels to prevent mishandling by personnel unfamiliar with the risks
Engineering Controls: Closed systems, local exhaust ventilation in areas where powder could become airborne
Personal Protective Equipment: Chemical-resistant gloves, lab coat or coveralls, safety goggles, NIOSH-approved respirator for extended exposure
Hygiene Measures: Wash hands before breaks and after handling, keep contaminated clothing in sealed bags
Workplace Monitoring: Regular air sampling in high-use environments, especially recycling, incineration, or manufacturing hubs
Physical State: Solid
Color: Off-white to yellowish
Odor: None
Molecular Weight: 627.24 g/mol
Melting Point: Around 175°C
Solubility: Insoluble in water, soluble in organic solvents like acetone and benzene
Vapor Pressure: Low under ambient conditions
Chemical Stability: Stable under normal storage and handling conditions
Reactivity: May react with strong oxidizing agents
Hazardous Decomposition Products: Hydrogen bromide, bromine, and other toxic organic compounds in fire
Conditions to Avoid: Strong heat, open flames, and incompatible chemicals
Acute Toxicity: Limited data, but exposure reports suggest low acute toxicity by oral, inhalation, or skin routes
Chronic Effects: Animal studies link long-term exposure to liver and thyroid disruption, reproductive impacts, and possible cancer risks
Sensitization: May cause allergic reactions upon repeated contact
Target Organs: Liver, thyroid, nervous system
Persistence: Remains in environment for decades due to resistance to degradation
Bioaccumulation: Detected in animal tissue far from industrial sources, enters food chains
Ecotoxicity: Toxic to fish and aquatic invertebrates, disrupts hormonal systems in wildlife
Wider Impact: Environmental concentrations continue to grow worldwide, complicating ecosystem recovery
Waste Treatment: Incinerate in approved facilities with effective air pollution controls, avoid landfill disposal
Precautions: Treat as hazardous waste, never flush to sewer or watercourse
Regulatory Responsibility: Adhere to all local, state, and federal regulations on persistent organic pollutants
Shipping Requirements: Classified as a regulated substance in many jurisdictions, transport requires hazard labeling
Packaging Recommendations: Leak-proof and sealed containers, secondary containment for bulk cargo
Spill Response on Route: Emergency contacts should be informed and routes planned to minimize exposure risk
International Agreements: Monitored under the Stockholm Convention for persistent organic pollutants
National Lists: Included under hazardous chemical registries in United States, European Union, and East Asian countries
Use Restrictions: Flame retardant applications now heavily restricted or banned in electronics and consumer goods in several regions
