Fireworks is released at once. Similar to a chrysanthemum, but with long-burning silver or gold stars that produce a soft, dome-shaped weeping willow-like effect. Fireworks pose risks of injury to people, and of damage, largely as a fire hazard. Fireworks produce smoke and dust that may contain residues of heavy metals, sulfur-coal compounds and some low concentration toxic chemicals. These by-products of fireworks combustion will vary depending on the mix of ingredients of a particular firework. (The color green, for instance, may be produced by adding the various compounds and salts of barium, some of which are toxic, and some of
Barium acetate Barium acetate Barium acetate (Ba(CHO)) is the salt of barium(II) and acetic acid. Barium acetate is generally produced by the reaction of acetic acid with barium carbonate: The reaction is performed in solution and the barium acetate crystallizes out. Alternatively, barium sulfide can be used: Again, the solvent is evaporated off and the barium acetate crystallized. Barium acetate is a white powder, which is highly soluble: at 0 °C, 55.8 g of barium acetate can be dissolved in 100 g of water. It decomposes upon heating into barium carbonate. When heated in air, barium acetate decomposes to the carbonate. It