Cobaltous ammonium phosphate

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Description

Dark red to violet crystals. Cobaltous ammonium phosphate is used as one nontoxic variant of cobalt violet pigments. It is used as a colorant in paints, glass, glazes, enamels and plastics.

Synonyms and Related Terms

cobalt violet deep; Pigment Violet 49; CI 77362; Kobalt Ammonium Phosphat (Deut.); fosfato de amonio cobalto (Esp.); fosfato di ammonio e cobalto (It.); ammonium cobaltous phosphate; cobalt ammonium phosphate

Risks

  • Skin contact may cause allergies, especially on elbows, neck and ankles.
  • Chronic inhalation may cause asthma.
  • Ingestion may cause vomiting, diarrhea and the sensation of hotness.

Physical and Chemical Properties

Soluble in most acids. Insoluble in water.

Composition CoNH4PO4

Resources and Citations

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993

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