Black powder (KNO3 / S / C, since China 9th century); modern fireworks color from Sr (red), Ba (green), Cu (blue), Na (yellow); flash powder Al / KClO4; safety regulated under UN Class-1.
Black powder (KNO3 / S / C, since China 9th century); modern fireworks color from Sr (red), Ba (green), Cu (blue), Na (yellow); flash powder Al / KClO4; safety regulated under UN Class-1.