Sodium dichromate

Synonyms

Bichromate de sodium [French]; Bichromate of soda; Celcure; Celcure Wood Presrvative; Chromic acid (H2Cr2O7), disodium salt; Chromium sodium oxide (Cr2Na2O7); Dichromic acid (H2Cr2O7), disodium salt; Disodium dichromate; Koppers Wolman Salts CCA; Natriumbichromaat [Dutch]; Natriumdichromaat [Dutch]; Natriumdichromat [German]; Oakite Composition No. 155; Osmose Hollow Heart Concentrate; Sodio (dicromato di) [Italian]; Sodium bichromate; Sodium dichromate (Na2(Cr2O7)); Sodium dichromate(VI); Sodium(dichromate de) [French]; Wolman Salts CCA-Type B; Wolman Salts CCA-Type C; Wood Cure A Wood Preservative; [ChemIDplus] Anhydrous sodium dichromate; [Ullmann] UN3086

Category

Chromium Compounds, Inorganic

Description

Red to orange hygroscopic solid; Soluble in water; [ICSC] Dark red aqueous solution; Deliquescent; [CAMEO]

Sources/Uses

Used in water treatment, dye and electric battery manufacturing, bleaching (fats, oils, sponges, and resins), refining petroleum, corrosion inhibitors (paints, metal coatings, and water systems), metal treatments, electroengraving of copper, defoliation of cotton and other plants and shrubs, fungicides, insecticides, miticides, wood preservation, glass colorants, dye mordants, and breweries (algaecide); [HSDB] Used in colorimetry (copper determination), as a complexing agent, and as an oxidation inhibitor in ethyl ether; [Hawley] Used to make vitamin K and waxes; [eChemPortal: ESIS: RAR] Compared with sodium dichromate dihydrate, it has the advantage of first absorbing 2 molecules of water instead of deliquescing immediately; [Ullmann]

Comments

A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Can be absorbed through skin; May cause skin sensitization and asthma after prolonged contact; May cause kidney and liver injury; May cause perforated nasal septum; [ICSC] A skin and eye irritant; Can cause asthma-like respiratory irritation; A powerful oxidizing agent; [HSDB] 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)

LC50 (rat) = 124.42 mg/m3/4h

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Toxic solid, oxidizing, 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:

• Applying Wood Preservatives
• Battery Manufacturing
• Glass Manufacturing
• Painting (Pigments, Binders, and Biocides)
• Petroleum Production and Refining
• Sewer and Wastewater Treatment
• Textiles (Printing, Dyeing, or Finishing)