3,4,5,6-Tetrabromophthalic anhydride

Synonyms

1,3-Isobenzofurandione, 4,5,6,7-tetrabromo-; Bromophthal; Bromphthal; Dion 6692 (VAN); FG 400; FG 4000; FireMaster PHT 4; PHT 4; Phthalic acid, tetrabromo-, anhydride; Phthalic anhydride, tetrabromo-; Saytex RB 49; Tetrabromophthalic acid anhydride; Tetrabromophthalic anhydride; [ChemIDplus]

Category

Acid Anhydrides, Cyclic

Description

Pale yellow solid; [HSDB] Powder; [MSDSonline]

Sources/Uses

Used as a reactive flame retardant (unsaturated polyester and epoxy resins, plastics, paper, and textiles) and chemical intermediate for other flame retardants; [HSDB] Also use to make sulfobromophthalein (liver function diagnostic aid); [Reference #1]

Comments

A mutagen and mild eye irritant; Causes change in lung weight on inhalation studies of rats; [RTECS] No evidence of mutagenicity in several tests using bacteria and rat liver; [HSDB] An eye and respiratory tract irritant; [CAMEO] See "ACID ANHYDRIDES."

Reference Link #1

Biomedical References

5.74E-07 mm Hg

LC (rat) > 10,920 mg/m3/4h

Processes

Industrial Processes with risk of exposure:

• Pulp and Paper Processing
• Textiles (Printing, Dyeing, or Finishing)