A yellow pigment composed of Iron chromate. Iron chromate is precipitated from a solution of a chromate salt, such as Potassium dichromate by the addition of Ferric chloride. The pure pigment is bright yellow, but some residual impurities, such as iron oxide, may result in a dull orange pigment color. Siderin yellow is compatible with all paint binders. It has also been used as a brown ceramic glaze and as a colorant in glass and enamel.
Synonyms and Related Terms
iron chromate; ferric chromate; Pigment Yellow 45; CI 77505
- Human carcinogen.
- Skin contact may cause allergies.
- Acute ingestion may cause fatal chromium poisoning.
- Chronic inhalation may cause lung cancer and respiratory irritation
- Ceramic Shop: SDS
Physical and Chemical Properties
Soluble in acids. Insoluble in water, ethanol.
Resources and Citations
- H. Kuhn, M.Curran, "Chrome Yellow and Other Chromate Pigments", Artists Pigments, Volume 1, R. Feller (ed.), Cambridge University Press: Cambridge, 1986.
- 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