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What Makes The Colors?
Stars are what makes the different colors in fireworks, they consist of 4 basic ingredients fuel, oxygen producing chemicals, color producing chemicals, and a binder that will hold all of this together to form pellets. The chemicals that produce different colors that are normally used are:
Red Strontium and Lithium compounds
Li2CO3 (Lithium Carbonate)= red
SrCO3 (Strontium Carbonate) = bright red
Orange Calcium Compounds
CaCl2 (Calcium Chloride)
Yellow Sodium compounds
NaNO3 (Sodium Nitrate)
Green Barium compounds
BaCl+ (Barium Chloride) = bright green
Blue Copper compounds and chlorine producer
CuCl (Copper Chloride)
Purple A combination of Strontium (Red) and Copper (Blue) compounds
Gold Charcoal, Iron, or Lampblack
Silver Titanium, Aluminum or Magnesium Flakes
White Titanium, Aluminum or Magnesium
Chlorine compounds are used to intensify or brighten colors.