Agent Name

Cobaltic-cobaltous oxide

CAS Number

1308-06-1

Formula

Co3-O4

Major Category

Metals

Synonyms

Cobalt tetraoxide; Cobalto-cobaltic oxide; Cobalto-cobaltic tetroxide; Cobaltosic oxide; Tricobalt tetraoxide; Tricobalt tetroxide; Cobalt oxide (Co3O4); Cobalt(II,III) oxide; [ChemIDplus]

Category

Metals, Inorganic Compounds

Description

Black or grey solid; [Merck Index] Black powder, insoluble in water; [MSDSonline]

Sources/Uses

Used in enamels, semiconductors, and grinding wheels; [Merck Index] When cobalt (II) oxide is heated at 400-500 deg C in an atmosphere of oxygen, the cobalt (II,III) oxide is formed. [Ullmann]

Comments

Harmful if swallowed; May cause skin sensitization; [MSDSonline] See "Cobalt."

Exposure Assessment
BEI

Cobalt in urine = 15 ug/L; sample at end of shift at end of workweek;

TLV (ACGIH)

0.02 mg/m3, as Co

Explanatory Notes

mp = 900 deg C; [MSDSonline]

Adverse Effects
Skin Sensitizer

Yes

Fibrogenic

Yes

IARC Carcinogen

Possible Carcinogen

Links to Other NLM Databases
Toxicity Information

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Chemical Information

Search ChemIDplus

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