Burst charge

In fireworks, a burst charge (usually black powder) [1] is a pyrotechnic mixture placed in a shell which is ignited when the shell reaches the desired height in order to create an explosion and spread the stars. Burst charge compositions are usually coated onto rice hulls or other low-density fillers, which increases the rate of combustion.

Common burst charges

References
  1. Federal Register. Office of the Federal Register, National Archives and Records Service, General Services Administration. March 2012.
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