Difference between revisions of "Cobaltous phosphate"

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== Description ==
 
== Description ==
  
A medium to strong violet pigment with a reddish hue. Cobaltous phosphate, or [http://cameo.mfa.org/materials/fullrecord.asp?name=cobalt%20violet%2C%20deep deep cobalt violet], was first prepared in 1859. It is a permanent pigment but it has low tinting strength. It dries quickly in [http://cameo.mfa.org/materials/fullrecord.asp?name=oil%20paint oil paints]. Cobaltous phosphate is also used as a colorant in [http://cameo.mfa.org/materials/fullrecord.asp?name=glass glass], [http://cameo.mfa.org/materials/fullrecord.asp?name=glaze glazes], [http://cameo.mfa.org/materials/fullrecord.asp?name=enamel%2C%20inorganic enamels], and [http://cameo.mfa.org/materials/fullrecord.asp?name=plastic plastics].
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A medium to strong violet pigment with a reddish hue. Cobaltous phosphate, or [[cobalt violet, deep|deep cobalt violet]], was first prepared in 1859. It is a permanent pigment but it has low tinting strength. It dries quickly in [[oil paint|oil paints]]. Cobaltous phosphate is also used as a colorant in [[glass]], [[glaze|glazes]], [[enamel, inorganic|enamels]], and [[plastic|plastics]].
  
 
== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==

Revision as of 09:45, 13 January 2014

Cobalt violet dark

Description

A medium to strong violet pigment with a reddish hue. Cobaltous phosphate, or deep cobalt violet, was first prepared in 1859. It is a permanent pigment but it has low tinting strength. It dries quickly in oil paints. Cobaltous phosphate is also used as a colorant in glass, glazes, enamels, and plastics.

Synonyms and Related Terms

cobalt phosphate; Pigment Violet 14; CI 77360; fosfato de cobalto (Esp., Port.); violeta de cobalto (Esp.); phosphate de cobalt (Fr.); fosfato di cobalto (It.); cobalt violet, deep

Other Properties

Soluble in mineral acids. Insoluble in water.

Composition Co3(PO4)2 - 8H2O
CAS 13455-36-2
Density 2.769
Molecular Weight mol. wt. = 366.74

Hazards and Safety

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.

Authority

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 2508
  • Thomas B. Brill, Light Its Interaction with Art and Antiquities, Plenum Press, New York City, 1980

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