Barium chromate

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Barium chromate
Other names	barium chromate oxide, chromic acid barium
Identifiers
CAS number	[10294-40-3]
Properties
Molecular formula	BaCrO4
Molar mass	253.322 g/mol
Appearance	yellow powder
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Barium chromate (or barium chromate oxide or chromic acid barium) is a fine light yellow powder with the formula BaCrO₄.

It is very insoluble in water, but is soluble in acids:

2 BaCrO₄ + 2 H⁺   →   2 Ba²⁺ + Cr₂O₇^2- + H₂O

It is used in some pyrotechnic compositions, especially delay compositions, as an oxidizer.

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