Chromium lignosulfonate

Agent Name
Chromium lignosulfonate
CAS Number
9066-50-6
Formula
Unspecified
Major Category
Metals
Synonyms
Chromium salt of spent sulfite liquor; Lignosulfonic acid, chromium salt; [ChemIDplus] Chrome lignosufonate; Spersene; [MSDSonline]
Category
Chromium Compounds, Inorganic
Description
Brown odorless powder; [MSDSonline]
Sources/Uses
Used as oil well drilling fluid additive; [MSDSonline] Chromium ligonsulfonates are used in the petroleum industry to reduce the viscosity of drilling muds; Produced from the organic material in sulfite waste liquor (pulp and paper mills) reacting with sodium dichromate to form a trivalent chromium compound containing 1.5-2.5% ammonium, 2.5-4.2% chromium, 0-5% iron, and 1.5-2.5% sodium; [Ullmann]
Comments
May cause irritation; May cause skin sensitization; [MSDSonline] See Cr(III) compounds in "Chromium."
Biomedical References
Search PubMed

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

Processes

Industrial Processes with risk of exposure: