Tetrabromobisphenol A|CAS: 79-94-7

Tetrabromobisphenol A (TBBPA,CAS: 79-94-7) is a brominated flame retardant widely used in electronics, plastics, and textiles. Here’s a concise overview:

Basic Information:

-Chemical Formula: C₁₅H₁₂Br₄O₂  

-Molar Mass: 543.87 g/mol  

-Appearance: White to off-white powder  

-Melting Point: ~180–184°C  

Application:

-Primary application as a reactive flame retardant in epoxy resins (e.g., printed circuit boards).  

-Also used as an additive flame retardant in plastics (ABS, HIPS) and synthetic polymers.  

Environmental & Health:

-Persistence:Low to moderate in the environment;can degrade into brominated compounds.  

-Potential endocrine disruptor (thyroid hormone interference).  

-Limited evidence of carcinogenicity (IARC: Group 3—not classifiable).  

-Bioaccumulation: Low in humans but detected in dust, water, and biota.  

Regulations:

-EU: Listed under REACH; restricted in some applications (e.g., POPs Regulation if decabromodiphenyl ether is present).  

-U.S.: EPA assesses risks under TSCA; no broad ban but monitored.  

-RoHS: Exempt for certain electronic uses (e.g., circuit boards).  

Safety:

-Handling: Use PPE (gloves, masks) to avoid inhalation/dermal contact.  

-Disposal: Follow hazardous waste guidelines (potential brominated dioxin formation if incinerated improperly).  

Alternatives:

-Non-halogenated flame retardants (e.g., phosphorus-based, magnesium hydroxide).  

For detailed toxicological data, refer to EPA’s IRIS or EFSA assessments. Let me know if you need specific studies or regulatory details!

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