A banana-color yellow pigment composed of barium chromate. Barium chromate is precipitated from a barium chloride solution by the addition of potassium dichromate. Barium yellow is a fairly permanent pigment but it may turn green slowly in light. It has low tinting strength and opacity. It was not widely used as an artists pigment by itself but was sometimes mixed with strontium yellow and zinc yellow then sold under the name lemon yellow or citron yellow. It was also used for coloring glass, and ceramic glazes. Currently barium chromate is used in anticorrosion pastes and in metal primers.
Synonyms and Related Terms
Pigment Yellow 31; CI 77103; Barytgelb (Deut.); amarillo de bario (Esp.); cromato de bario (Esp.); jaune d'outremer (Fr.); jaune de baryum (Fr.); giallo di bario (It.); amarelo de bário (Port.); ultramarine yellow; lemon yellow; permanent yellow; barium chromate yellow; baryta yellow; Steinbuhl yellow
Soluble in dilute mineral acids and alkalis. Insoluble in water. Microscopically, it may appear as colorless, birefracting, rhombic plates,
|Molecular Weight||mol. wt. = 253.32|
|Refractive Index||1.94 - 1.98|
Hazards and Safety
Toxic by inhalation and ingestion. Skin contact may cause irritation.
Carcinogenic. Combustible. Decomposed by heat.
Barium and Chemicals: MSDS
° H. Kuhn, M.Curran, "Chrome Yellow and Other Chromate Pigments", Artists Pigments, Volume 1, R. Feller (ed.), Cambridge University Press: Cambridge, 1986.
Sources Checked for Data in Record
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