Barium chlorate

Sodium-free barium chlorate can be produced directly through electrolysis:[2][unreliable source?]

[3]: 312–313 When barium chlorate is heated with a fuel, it burns to produce a vibrant green light, which is also a flame test for the presence of bariom ions.

Because it is an oxidizer, a chlorine donor, and contains a metal ion, this compound produces a distinctive green colour.

[4] Barium chlorate, like all oxidizing agents, is dangerous to human health and is also classed as toxic to the environment.

The Environmental Protection Agency (EPA) lists barium chlorate as hazardous.

NFPA 704 four-colored diamond Health 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gas Flammability 0: Will not burn. E.g. water Instability 3: Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked. E.g. hydrogen peroxide Special hazard OX: Oxidizer. E.g. potassium perchlorate
The green seen in this firework is produced by barium chlorate and barium nitrate