Description

Polybrominated Biphenyls CAS NO 67724-32-7 are a class of brominated flame retardants (BFRs) characterized by the substitution of hydrogen atoms with bromine on a biphenyl core structure. These compounds are valued for their high thermal stability and effectiveness in reducing the flammability of various polymers and synthetic materials. They are primarily required by manufacturers in the plastics, textiles, and electronics industries seeking to meet stringent fire safety regulations for their products.

Application

• As an additive flame retardant in engineering thermoplastics such as ABS, polycarbonate, and polyamides.
• Imparting flame resistance to high-impact polystyrene (HIPS) and expandable polystyrene (EPS) foams.
• Enhancing fire safety in textile back-coatings for upholstery, curtains, and protective clothing.
• Use in electrical and electronic components, including circuit boards and cable insulation.
• Application in polyurethane foams for furniture and automotive interiors.
• Research and development of novel flame-retardant formulations and material testing.
• Historical use as a fire retardant in industrial applications (subject to current regulatory compliance).

Basic Information

Product Name	Polybrominated Biphenyls
CAS No.	67724-32-7
Molecular Formula	C12H(10-n)Brn (n=1-10)
Molecular Weight	Varies by degree of bromination
Synonyms	PBBs; Brominated Biphenyls; FireMaster BP-6; Hexabromobiphenyl (major component); Octabromobiphenyl; Decabromobiphenyl; 1,1'-Biphenyl, brominated derivatives; Bromobiphenyls
EINECS	Contact for details

Quality Control

Our Polybrominated Biphenyls are produced and tested to ensure batch-to-batch consistency and performance. Quality assurance includes verification of bromine content, thermal stability, and impurity profiles. While this product is subject to significant global regulatory restrictions (e.g., Stockholm Convention on POPs), we provide full traceability and Certificates of Analysis (COA) detailing conformance to agreed specifications for authorized applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Recommended storage temperature is 15-25°C. Keep container tightly sealed when not in use to prevent contamination.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Bromine Content	≥70% (Typical)
Melting Point	Varies by congener profile
Thermal Decomposition	>300°C
Moisture Content	< 0.5%
Particle Size	Customizable (e.g., < 100 mesh)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.