Tetrabromobisphenol A Bis (2,3-dibromo-2-methylpropyl ether)

Tetrabromobisphenol A Bis (2,3-dibromo-2-methylpropyl ether),CAS,97416-84-7 is a complex, high molecular weight brominated flame retardant (BFR). It is a derivative of the common flame retardant Tetrabromobisphenol A (TBBPA), where the two phenolic hydroxyl groups are etherified with 2,3-dibromo-2-methylpropyl groups.This structure makes it a highly brominated compound, designed to be incorporated into polymers to reduce their flammability.

Basic Information

 CAS Registry Number: 97416-84-7

Molecular Formula: C25H20Br8O2

Molar Mass: 943.46 g/mol

Application:  

Function: It is an additive flame retardant, meaning it is mixed into the polymer matrix rather than chemically bonded to it. Its mode of action is primarily in the gas phase: when exposed to heat, it decomposes and releases bromine radicals which scavenge the high-energy H• and OH• radicals that propagate the combustion chain reaction.

Applications: It has been used in various polymers where high levels of flame retardancy are required, particularly:

Polystyrene (PS) and High-Impact Polystyrene (HIPS)

Acrylonitrile Butadiene Styrene (ABS)

Polyolefins (e.g., Polypropylene PP)

Regulatory and Health Concerns

This compound is part of a group of BFRs that have raised significant environmental and health concerns:

1. Persistence and Bioaccumulation: Its complex, heavily halogenated structure makes it highly resistant to environmental degradation (persistent) and it can accumulate in fatty tissues of organisms (bioaccumulative).

2. Toxicity: It is suspected of being toxic to aquatic life and may have potential adverse effects on human health, including endocrine disruption.

In summary,CAS 97416-84-7 refers to a specific,highly brominated additive flame retardant whose production and use are now globally restricted due to its persistent, bioaccumulative, and toxic properties,but it still need in some of flame retardant industry.

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