Naphthenic acids, chromium salts

Agent Name
Naphthenic acids, chromium salts
CAS Number
61788-69-0
Formula
Unspecified
Major Category
Metals
Synonyms
Chromium (III) naphthenate; Naphthenic acid, chromium salt; [Strem Chemicals MSDS]
Category
Chromium Compounds, Inorganic
Description
Approximately 30% in mineral spirits: Dark green liquid; [Strem Chemicals MSDS]
Sources/Uses
"Naphthenic acid (CAS: 1338-24-5 ) is the name for an unspecific mixture of several cyclopentyl and cyclohexyl carboxylic acids with molecular weight of 120 to well over 700 atomic mass units. The main fraction are carboxylic acids with a carbon backbone of 9 to 20 carbons. Salts of naphthenic acids, which are naphthenates, are widely used as hydrophobic sources of metal ions in diverse applications." [Wikipedia]
Comments
"The trivalent form of Cr is 500-1000 times less toxic than the hexavalent form. Organic Cr-containing complexes of toxicological importance have not been reported." [Nordberg, p. 718] See "Naphthenic acid." See "Chromium."
Biomedical References

Exposure Assessment

TLV (ACGIH)
0.003 mg/m3, as Cr(III), inhalable particulate matter
PEL (OSHA)
0.5 mg/m3
Explanatory Notes
Soluble Cr(III) compounds are assigned RSEN and DSEN; "Trivalent chromium compounds--with the exception of chromium(III) acetate, chromium(III) chloride hexahydrate, and chromium(III) nitrate--are insoluble or poorly soluble in water . . ." [ACGIH]

Adverse Effects

IARC Carcinogen
Not classifiable
ACGIH Carcinogen
Not Classifiable

Diseases, Processes, and Activities Linked to This Agent

Other Information
No other related information on this agent was found.