Barium Sulfate

Name: Barium sulfate
Chemical formula: BaSO4
Particle size: very fine powder

Description: Barium sulfate is used as a high temperature oxidizer in some green and white compositions, as well as being the oxidiser in the flash phase of some strobe compositions. It is also used as an additive in many firefly star compositions. Barium nitrate is more common in green pyrotechnic formulas, as it is a more amiable oxidizer and produces a superior colour

Precaution:
P: 260,264,270,273,314,501