Agent Name

Potassium dichromate

Alternative Name

Potassium bichromate

CAS Number

7778-50-9

Formula

Cr2-O7.2K

Major Category

Metals

Synonyms

Bichromate of potash; Chromium potassium oxide (K2Cr2O7); Dichromic acid dipotassium salt; Dipotassium bichromate; Dipotassium dichromate; Dipotassium dichromium heptaoxide; Iopezite; Kaliumdichromat [German]; Potassium bichromate; Potassium chromate (K2Cr2O7); Potassium dichromate; Potassium dichromate (K2(Cr2O7)); Potassium dichromate (K2Cr2O7); Potassium dichromate(VI); SRM 935a; [ChemIDplus] UN1479

Category

Chromium Compounds, Inorganic

Description

Bright orange-red crystals; [ChemIDplus]

Sources/Uses

Used as a dry cell depolarizer and in dyeing, staining, leather tanning, bleaching, and oxidizing; Also used in medical practice as an external astringent, antiseptic, and caustic; [ChemIDplus] Used with tungsten and iron in pyrotechnic displays; [CAMEO] Used in painting, printing, wood staining, fabric waterproofing, and corrosion inhibiting; also used to make safety matches and to bleach palm oil, wax, and sponges; [Merck Index] Used as an intensifier in photographic development; Also used as a mordant in textile dyeing; [www.ci.tucson.az.us/arthazards/medium.html]

Comments

CrVI compounds are irritants, sensitizers, and may be corrosive to the skin. CrVI compounds are respiratory tract irritants and may cause pulmonary sensitization. CrVI may cause acute tubular necrosis and liver injury. [ATSDR Case Studies] Corrosive to skin; [CAMEO] A hexavalent chromium compound; [CHEMINFO] See "Chromium" and linked occupational diseases.

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

Bioaccumulates

Yes

TLV (ACGIH)

0.05 mg/m3, as Cr

PEL (OSHA)

0.005 mg/m3, as Cr(VI)

Lethal Concentration

LC50 (rat) = 99 mg/m3/4 hr; [CHEMINFO]

Adverse Effects
Nephrotoxin

Yes

Skin Sensitizer

Yes

Asthma

Yes

Hepatotoxin

Hepatotoxin, Secondary

Dermatotoxin

Skin Burns

IARC Carcinogen

Known Carcinogen

NTP Carcinogen

Human Carcinogen

ACGIH Carcinogen

Confirmed Human

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure:

Activities

Activities with risk of exposure: