Agent Name

Cobalt(II) hydroxide

CAS Number

21041-93-0

Formula

Co-H2-O2

Major Category

Metals

Synonyms

Cobalt dihydroxide; Cobalt(2+) hydroxide; Cobaltous hydroxide; Cobalt hydroxide (Co(OH)2); [ChemIDplus]

Category

Metals, Inorganic Compounds

Description

Blue-green or rose-red solid (red form more stable); [Merck Index] Pink powder, practically insoluble in water; [MSDSonline]

Sources/Uses

Used to make cobalt compounds, as a drier for paints, to aid drying of lithographic inks, and in storage battery electrode impregnating solutions; [Merck Index]

Comments

May be harmful; 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

Adverse Effects
Skin Sensitizer

Yes

IARC Carcinogen

Possible Carcinogen

ACGIH Carcinogen

Confirmed Animal

Links to Other NLM Databases
Toxicity Information

Search TOXNET

Chemical Information

Search ChemIDplus

Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: