Nomenclature
CAS number: 10294-40-3
C.I. 77103; C.I. Pigment Yellow 31; Baryta yellow; lemon yellow; permanent yellow; Steinbühl yellow; ultramarine yellow.
BaCrO
4; mol wt 253.32.
Ba 54.21%, Cr 20.53%, O 25.26%.
Description and 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.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.