Agent Name

Zinc borate

CAS Number

1332-07-6

Major Category

Metals

Synonyms

Alcanex FR 100; Alcanex FRC 600; Bonrex FC; Borax 2335; Boric acid, zinc salt; Climax ZB 467; FRC 600; Flamtard Z 10; JS 9502; SZB 2335; XPI 187; ZB 112; ZB 237; ZB 467 Lite; ZN 100; ZSB 2335; ZT; ZT (fire retardant); Firebrake ZB; [ChemIDplus]

Category

Metalloid Compounds (Boron)

Description

White odorless solid; Powder (ceramic grade) = 99.95% pure; Commercial grade = about 50% zinc oxide and 30% boric anhydride; [HSDB] White powder; [MSDSonline]

Sources/Uses

Used as flame retardant (PVC, cellulosics, unsaturated halogenated polyesters, polymers, elastomers, paper, paperboard, textiles, and textile coatings), fungicide, and ceramics flux; [HSDB]

Comments

Toxic by ingestion; A skin and eye irritant; [HSDB]; Zinc salts are irritating to the GI tract; No cumulative effects except digestive disorders; [EPA OHM/TADS] Has not been tested for reproductive or other chronic effects; [NJ-HSFS] An irritant; [MSDSonline] See "Boric acid."

Exposure Assessment
MAK

0.1 mg/m3, respirable fraction, 2 mg/m3 (inhalable fraction)-for Zn inorg. compds.

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