Molybdate orange
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Description
A deep, reddish-orange synthetic pigment. Patented in 1930 by Lederle in Germany, molybdate orange is a solid solution of Lead chromate, lead molybdate, and Lead sulfate. The toxic pigment has uniform, small, rounded particles and a high refractive index. Molybdate orange has good covering power but moderate lightfastness. It is used industrially in printing inks, paints, and plastic.
Synonyms and Related Terms
molybdenum orange; Pigment Red 104; CI 77605; anaranjado de molibdeno (Esp.); Molybdatorange (Deut.); orange de molybdate (Fr.); arancio di molibdeno (It.); molybdaatoranje (Ned.); molybdate red; molybdate chrome orange; moly orange; chrome vermilion
Risks
- Toxic by ingestion and inhalation.
- Human carcinogen, teratogen and suspected mutagen.
- Skin contact may cause irritation and ulcers.
- General Paint: SDS
Physical and Chemical Properties
Small, round, uniform particles. Moderate birefringence.
| Composition | 7PbCrO4-PbMoO4-2PbSO4 |
|---|---|
| CAS | 12656-85-8 |
| Refractive Index | 2.55 |
Resources and Citations
- M.de Keijzer "A Brief Survey of the Synthetic Inorganic Artists' Pigments Discovered in the 20th Century" ICOM Preprints, Dresden 1990 p. 214-219.
- R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- The Dictionary of Art, Grove's Dictionaries Inc., New York, 1996 Comment: "Pigments"
- Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979