![]() Other metallic additives used around the world include barium salts (which produce green flashes of light), copper compounds (blue), calcium salts (orange), and strontium compounds (red). Aluminium powder is a common ingredient, often acting as the fuel itself, which is added to produce bright flashes of white, for example in sparklers ( phoojharis). The binder, which some makers treat as optional, and whose role is to allow for a stable reaction, is often sulphur.Īdditionally, metallic components are put in to help create a spectacle. The oxidiser, which provides the oxygen necessary for the reaction leading to the explosion, is potassium nitrate in many commercial crackers. The fuel is typically a carbon-based compound. To know what ingredients they use, therefore, it is necessary to first understand what goes into a conventional cracker.Ī firecracker consists of three main components: a fuel, an oxidiser, and a binder. Green crackers seek to produce the same light-and-sound effect as conventional crackers but emit lower amounts of pollutants.
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