Cobaltous chloride

Agent Name
Cobaltous chloride
CAS Number
7646-79-9
Formula
Cl2-Co
Major Category
Metals
Cobaltous chloride formula graphical representation
Synonyms
Cobalt chloride (CoCl2); Cobalt muriate; Cobalt(II) chloride; Cobaltous dichloride; Dichlorocobalt; Kobalt chlorid (German); Cobalt dichloride; [ChemIDplus] UN3288
Category
Metals, Inorganic Compounds
Description
Pale-blue hygroscopic solid; Turns pink in moist air; [Merck Index] Blue granules with a chlorine-like smell and soluble in water; [MSDSonline]
Sources/Uses
Used in invisible inks, humidity indicators, temperature indicators, catalysts, electroplating, glass and porcelain pigments, fertilizers, feed additives, poison gas absorbents, and veterinary medication; [Merck Index] Used as a flux (magnesium refining), lubricant, and dye mordant; Also used in barometers and as a laboratory reagent; [Hawley]
Comments
An eye irritant; May cause skin sensitization and asthma after prolonged contact; [ICSC] The anhydrous form is very hygroscopic and converts into the hexahydrate form in moist air, changing color from blue to red. [Ullmann] Cobalt chloride is a potent allergen; [Kanerva, p. 506] See "Cobalt."
Biomedical References

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 = 724 deg C;[MSDSonline]

Adverse Effects

Skin Sensitizer
Yes
Asthma
Yes
IARC Carcinogen
Possible (2b)

Diseases, Processes, and Activities Linked to This Agent

Diseases

Occupational diseases associated with exposure to this agent: