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."

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

Links to Other NLM Databases
Toxicity Information

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Chemical Information

Search ChemIDplus

Related Information in HazMap
Processes

Industrial Processes with risk of exposure: