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Product Name: Selenium Tetrabromide
Synonyms: Selenious tribromide, Selenium(IV) bromide
Chemical Formula: SeBr4
Molecular Weight: 463.48 g/mol
CAS Number: 13465-94-6
Recommended Use: Research, chemical synthesis, laboratory applications
Manufacturer: Name, address, and emergency contact information provided on package label
Hazard Classification: Acute Toxicity (Oral), Acute Toxicity (Inhalation), Skin Corrosion, Serious Eye Damage, Environmental Hazard
GHS Pictograms: Skull and crossbones, corrosion, environment
Signal Word: Danger
Hazard Statements: Harmful if swallowed, toxic in contact with skin or if inhaled, causes severe skin burns and eye damage, very toxic to aquatic life
Precautionary Statements: Use protective equipment, avoid release to the environment, wash thoroughly after handling, do not breathe dust or fumes, do not eat, drink or smoke during use
Chemical Name: Selenium Tetrabromide
Concentration: 100%
CAS Number: 13465-94-6
Impurities: Not intentionally added
Stabilizers: None typically present
Inhalation: Remove to fresh air without delay, keep patient quiet and warm, seek immediate medical attention. Provide artificial respiration if breathing stops.
Skin Contact: Immediately remove contaminated clothing, flush affected skin with water for at least 15 minutes, get medical help.
Eye Contact: Rinse meticulously with clean running water for at least 20 minutes, hold eyelids apart, seek prompt medical evaluation.
Ingestion: Do not induce vomiting, rinse mouth with water, never give anything by mouth to an unconscious person, seek medical attention at once.
Advice for Medical Professionals: Provide supportive care, treat symptomatically, monitor for respiratory, cardiac, and neurological complications
Suitable Extinguishing Media: Use dry chemical, CO2, or alcohol-resistant foam. Do not use water streams directly on powder; avoid spreading
Specific Hazards: Produces toxic gases, including hydrogen bromide and selenium oxides under fire conditions
Protective Equipment: Wear full protective gear and self-contained breathing apparatus
Special Procedures: Move containers from fire area if possible, keep surrounding materials cool with water mist, prevent contaminated runoff
Personal Precautions: Ventilate area, wear chemical-resistant gloves and goggles, use approved respirator
Environmental Precautions: Prevent entry into soil, waterways, drains, and sewers
Spill Cleanup: Scoop up material with non-sparking tools, avoid dust formation, place in labeled chemical waste containers, decontaminate area with plenty of water and sodium thiosulfate
Disposal: Follow all local, regional, and national regulations for hazardous material disposal
Handling: Work in well-ventilated fume hood, avoid any skin or eye contact, keep away from heat sources and incompatible materials.
Storage: Store tightly sealed in corrosion-resistant containers, keep in a dry and cool place with acid-resistant surfaces, protect from moisture and direct sunlight, label area clearly, keep separate from oxidizers and reducing agents
Occupational Exposure Limits: OSHA PEL selenium compounds (as Se): 0.2 mg/m3 (TWA), ACGIH TLV: 0.2 mg/m3
Engineering Controls: Local mechanical exhaust in confined or poorly ventilated spaces, handle in fume hood
Personal Protective Equipment: Chemical splash goggles, face shield, gloves (nitrile or neoprene), laboratory coat, appropriate respirators, eye wash station and safety shower accessible
Hygiene Measures: Wash thoroughly after handling, remove contaminated clothing, avoid inhaling dust or mist, do not eat or drink in areas where chemical is handled
Appearance: Orange-red crystalline solid
Odor: Pungent
pH: Not applicable (reacts with water)
Melting Point: ~180 °C
Boiling Point: Decomposes at elevated temperature
Solubility: Reacts with water
Vapor Pressure: Not established
Relative Density: 3.5–3.7
Flash Point: Not flammable
Partition Coefficient: Not determined
Chemical Stability: Stable under specified storage conditions, decomposes with moisture or at higher temperature
Reactivity: Reacts with water releasing toxic fumes
Incompatible Materials: Strong oxidizing agents, reducing agents, acids, water, alkali metals
Hazardous Decomposition Products: Hydrogen bromide, selenium oxides, bromine vapors
Conditions to Avoid: Moisture, high temperatures, direct sunlight
Routes of Exposure: Inhalation, skin contact, ingestion, eye contact
Acute Effects: Causes burns to skin and eyes, severe irritation to respiratory and digestive systems, toxic systemic effects, including central nervous system, heart, and kidney damage
Chronic Effects: Prolonged exposure may cause selenium poisoning, hair and nail loss, neurological symptoms, garlic breath odor
LD50/LC50: Data limited; selenium compounds considered highly toxic (LD50 oral-rat: <50 mg/kg for related selenium halides)
Carcinogenicity: Not classified as a human carcinogen by IARC, NTP, or OSHA
Sensitization: No information available
Mutagenicity/Teratogenicity: Data limited, yet handled as potentially hazardous for reproductive toxicity
Toxicity: Highly toxic to aquatic organisms, very harmful in long-term aquatic environments
Persistence and Degradability: Not readily biodegradable, persists in soil and water, selenium accumulates in food chains
Bioaccumulation Potential: High for selenium species
Mobility in Soil: Readily mobile, risk of leaching to groundwater if released
Other Adverse Effects: Reported cases of selenium bioaccumulation harming fish and wildlife
Waste Management: Arrange disposal through licensed hazardous waste contractor
Contaminated Packaging: Rinse container under supervision, dispose as hazardous waste
Special Precautions: Do not pour into drains or the environment, follow regional waste regulations
Disposal Methods: Neutralize with sodium thiosulfate if directed by local authorities, collect as hazardous solid or slurry for regulated landfill or incineration
UN Number: UN 3283
Proper Shipping Name: Selenium compound, n.o.s.
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: II
Label: Toxic, corrosive
Marine Pollutant: Yes
Special Precautions: Protect from moisture, tightly seal, emergency procedures required in case of spillage or leakage during transit
OSHA: Classified as hazardous
TSCA: Listed
SARA Title III: Reportable quantity threshold, subject to section 313 for selenium compounds
EU Regulation (REACH): Subject to registration and restriction
WHMIS Classification (Canada): D1A (very toxic), E (corrosive)
Other National and Local Regulations: May be subject to additional rules concerning storage, use, discharge limits, and reporting requirements in certain jurisdictions
