Cobalt (II) Oxide

CAS Number

1307-96-6

Synonym

Cobaltous oxide, Cobalt monoxide

Occurrence/Use

Cobalt(II) oxide or cobalt monoxide is an inorganic compound that appears as olive-green to red crystals, or as a greyish or black powder. It is used extensively in the ceramics industry as an additive to create blue colored glazes and enamels as well as in the chemical industry for producing cobalt(II) salts.

Cobalt (II) Oxide

Soil Screening

Last CHHSL revision: 1/2005
CHHSL Comments:

For chemical-specific screening levels for use in assessing contaminated sites, please see HHRA Note 3 (DTSC HERO). https://www.dtsc.ca.gov/assessingrisk/humanrisk2.cfm

Air

Hot Spots Unit Risk and Cancer Potency values

Unit Risk Factor:  7.7 × 10–3 (µg/m3)–1

Inhalation Slope Factor:  27 (mg/kg-day)–1

Air Toxics Hot Spots Notice

Notice of Adoption of Revised Cancer Inhalation Unit Risk Factors for Cobalt Sulfate Heptahydrate and Water-Soluble Cobalt Compounds

Proposition 65

Chemical Status

Cancer: Currently listed

Cancer

Cancer - Listing Mechanism
Authoritative Bodies-International Agency for Research on Cancer
Listed as causing : Listed as causing: Cancer
Date of Listing: