I’m a chemist and also president of Pyrotechnics Guild International, an organization that promotes the safe use of fireworks ... mix produces a red flame; copper, blue; barium, green; and ...

Strontium chloride, the compound used to make red fireworks, can withstand at least 1,500 degrees Fahrenheit. That's hotter than some lava. But to make a blue firework, you need copper chloride ...