What are the Compositions of Fireworks?

  • Black powder (consists of calium nitrate, charcoal, sulfur) 
  • Fluorescent impulses Colorful effects are reached by adding barium, strontium and copper salts; for red coloring: strontiumoxalate, carbonate and nitrate, for green coloring: bariumoxalate, chlorate and nitrate. 
  • Cracking effects (usually with a mixture of fine metal powder together with oxidation agents).  
  • Whistling impulses (chlorate, perchlorate as well as saults of aromatic acids). The whistling noise is reaches with oscillation of the let-off.
  • Additional impulses like smoke contain besides combustible parts vaporising or subliming ingredients. 

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