Agent Name

Cobaltous oxide

CAS Number

1307-96-6

Formula

Co-O

Major Category

Metals

Synonyms

C.I. 77322; C.I. Pigment Black 13; CI 77322; CI Pigment Black 13; Cobalt Black; Cobalt monooxide; Cobalt monoxide; Cobalt oxide (CoO); Cobalt(2+) oxide; Cobalt(II) oxide; Monocobalt oxide; Zaffre; [ChemIDplus] UN3288

Category

Metals, Inorganic Compounds

Description

Solid that is dark gray (commercial product), olive green, or red; [Merck Index] Green powder, insoluble in water; [MSDSonline]

Sources/Uses

Used in catalysts, dryers, waste-gas scavengers, feed additives, tungsten carbide, semiconductors, enamel coatings, and pigments for ceramics and glass; [HSDB]

Comments

May cause skin sensitization and asthma after prolonged contact; [ICSC] A skin and eye irritant; [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 = 1935 deg C; [MSDSonline]

Adverse Effects
Skin Sensitizer

Yes

Asthma

Yes

IARC Carcinogen

Possible Carcinogen

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure:

Activities

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