Barium Chromate(VI)
Title: Barium Chromate(VI)
CAS Registry Number: 10294-40-3
Additional Names: C.I. 77103; C.I. Pigment Yellow 31; Baryta yellow; lemon yellow; permanent yellow; Steinb├╝hl yellow; ultramarine yellow
Molecular Formula: BaCrO4
Molecular Weight: 253.32
Percent Composition: Ba 54.21%, Cr 20.53%, O 25.26%
Literature References: Prepn: Beyer, Rieman, J. Am. Chem. Soc. 65, 971 (1943); Colour Index vol. 4 (3rd ed., 1971) p 4656.
Properties: Yellow, heavy, monoclinic, orthorhombic crystals. Poisonous! d 4.50. Practically insol in water, dil acetic or chromic acids. Dissolved or dec by mineral acids.
Density: d 4.50
Use: As a pigment almost entirely in anticorrosion jointing pastes to prevent electro-chemical corrosion at junctions of dissimilar metals; some use in artists' colors and in coloring glass, ceramics, porcelain. Also used in metal primers, pyrotechnic compositions.

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