Ammonium dichromate

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Orange-red prismatic needles. Ammonium dichromate is mixed with albumin and water to make a light sensitive emulsion for photolithography. It is also used in photography, process engraving, leather tanning, porcelain glazes, textile dyeing, and pyrotechnics.

Synonyms and Related Terms

ammonium bichromate

Chemical structure

Ammonium dichromate.jpg

Other Properties

Soluble in water and ethanol.

Composition (NH4)2Cr2O7
CAS 7789-09-5
Melting Point 180 (dec)
Density 2.155
Molecular Weight mol. wt. = 252.07

Hazards and Safety

Corrosive. Contact causes burns to skin and membranes.

Strong Oxidizer. Contact with other materials may cause flames.

Carcinogenic. Toxic by inhalation and ingestion.

Mallinckrodt Baker: MSDS

Sources Checked for Data in Record

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 544