Tetrabromophthalic anhydride 632-79-1

Product Name: Tetrabromophthalic Anhydride
English Alias: TBPA; 4,5,6,7-Tetrabromo-1,3-isobenzofurandione
CAS Number: 632-79-1
Molecular Formula: C₈Br₄O₃
Molecular Weight: 463.71 g/mol
Appearance: White to off-white crystalline powder
Package: 25 kg/bag (paper-plastic composite bag with inner PE liner)

What is Tetrabromophthalic Anhydride

Tetrabromophthalic Anhydride is a brominated aromatic compound appearing as a white to off-white crystalline powder. It is insoluble in water but soluble in certain organic solvents such as dimethylformamide (DMF) and acetone. The compound is an important reactive flame retardant intermediate, exhibiting high bromine content and thermal stability. It is widely used in polymer materials for flame retardant modification.

COA (Certificate of Analysis):

Test	Requirement	Test Result
Appearance	White powder	White powder
Bromine content	67min	68.3
Melting point	270min	274
Sulfide	0.3max	0.12
moisture	0.2max	0.041

Application:

Flame Retardant: Reactive intermediate for epoxy resins and polyesters

Polymer Additive: Flame retardant for plastics, rubber, and textiles

Electronic Materials: Flame retardant component in circuit boards

Construction Materials: Fire retardant for building materials

Chemical Synthesis: Intermediate for other brominated compounds

Cable Industry: Flame retardant for wire and cable coatings

Safety Profile:

Tetrabromophthalic Anhydride may cause skin and eye irritation. Inhalation of dust may cause respiratory irritation. Use appropriate personal protective equipment including dust mask, safety glasses, and gloves when handling. Avoid breathing dust. The substance may be harmful to aquatic life. For detailed safety information, always consult the full Safety Data Sheet (SDS).

Storage Requirements:

Store in a cool, dry, well-ventilated area away from direct sunlight. Keep containers tightly closed and sealed. Maintain storage temperature below 30°C. Relative humidity below 65% recommended. Store away from strong oxidizing agents and bases.

Transport & Packaging:

Tetrabromophthalic Anhydride is packaged in paper-plastic composite bags with inner polyethylene liner (25 kg net weight per bag). Transport as non-hazardous material under normal conditions. Ensure containers are properly sealed and protected from moisture during transportation. Store away from incompatible materials.