Potassium chromate

Synonyms

Bipotassium chromate; Chromate of potash; Chromate of potass; Dipotassium chromate; Dipotassium chromate (K2CrO4); Dipotassium monochromate; Neutral potassium chromate; Potassium chromate (K2(CrO4)); Potassium chromate(VI); Tarapacaite; Chromic acid, dipotassium salt; [ChemIDplus] UN3087

Category

Chromium Compounds, Inorganic

Description

Lemon-yellow solid; Soluble in water; [Merck Index] Yellow crystalline solid; [MSDSonline]

Sources/Uses

Used in aniline black, as a textile mordant, to make pigments and inks, for metal treatment, and in stripping solution for dyed wool; Has limited application in enamels, finishing leather, and rustproofing of metals (being replaced by sodium salt); [HSDB] Used to make other chromium compounds; [CAMEO] Used in photographic processing; [Ullmann]

Comments

Strong oxidizing agent; A mucous membrane irritant; Prolonged nasal irritation can lead to perforated septum; A strong eye irritant; [CAMEO] Corrosive to skin and eyes; May cause skin and respiratory sensitization after prolonged contact; [CHEMINFO] See "Chromium" and linked occupational diseases.

Biomedical References

Yes

0.0001 mg/m3, as Cr(VI), inhalable particulate matter

0.0005 mg/m3, as Cr(VI), inhalable particulate matter

0.005 mg/m3, as Cr(VI)

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Oxidizing solid, toxic, n.o.s."

Yes

Yes

Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion

Yes

Skin burns

Established

Human carcinogen

Confirmed Human

Diseases

Occupational diseases associated with exposure to this agent:

• Asthma, occupational
• Chromium, chronic toxic effect
• Contact dermatitis, allergic

Processes

Industrial Processes with risk of exposure:

• Leather Tanning and Processing
• Painting (Pigments, Binders, and Biocides)
• Photographic Processing
• Textiles (Printing, Dyeing, or Finishing)