Agent Name

Chromium(III) bromide

CAS Number

10031-25-1

Formula

Br3-Cr

Major Category

Metals

Synonyms

Chromic bromide; Chromium tribromide; [ChemIDplus]

Category

Chromium Compounds, Inorganic

Description

Black crystals; [Merck Index]

Sources/Uses

Used as polymerization catalysts for olefins; [Merck Index]

Comments

CrIII compounds do not cause chrome ulcerations but may cause allergic dermatitis in workers with prior sensitization to CrVI compounds. [ILO Encyclo] CrIII is an essential trace mineral in the human diet. [ATSDR Case Studies] A skin, eye, and respiratory tract irritant; "Stable under recommended storage conditions." [MSDSonline] See "Bromine." See "Chromium."

Exposure Assessment
TLV (ACGIH)

0.003 mg/m3, as Cr(III), inhalable particulate matter

PEL (OSHA)

0.5 mg/m3

Explanatory Notes

Soluble Cr(III) compounds are assigned RSEN and DSEN; "Trivalent chromium compounds--with the exception of chromium(III) acetate, chromium(III) chloride hexahydrate, and chromium(III) nitrate--are insoluble or poorly soluble in water . . ." [ACGIH]

Adverse Effects
IARC Carcinogen

Not Classifiable

ACGIH Carcinogen

Not Classifiable

Links to Other NLM Databases
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Chemical Information

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