A combination of chemicals that forms a pyrotechnic mixture, desired for specific color or effect.


In pyrotechnics a comet is a block of pyrotechnic composition. They are very similar to stars but are usually much larger, however there is no official size where a comet is called a comet rather than a star. Comets are sometimes donut-shaped to increase surface area and decrease burn time. They can either be fired alone or as rising tails, which are comets that are attached to the outside of an aerial shell.

Colored fires

Colored fires are slow burning color compositions that are burnt as heaps (without a container) or being loaded into short tubes by simple means.

Color producing agents

The purpose of the following list is to provide an overview about color producing chemicals. Most color donors are mixed into a fuel-oxidizer mixture, which as a standalone produces little colour emitters and can be seen as a white piece of colour ready to be filled in with salts. This is why sodium salts are never used for colored flame compositions (except yellow): sodium burns with a yellow flame and overpowers other colours. Some of the chemicals serve as both oxidizer and color producing agent.



A spherical break of stars, similar to a peony, but with stars that leave a visible trail of sparks. A common composition to give the trails are slow burning gunpowder mixtures. The addition of large amounts of charcoal causes thousands of glowing charcoal sparks. The sparks are made alive at first by the action of nitrates on the charcoal then the air supplies oxygen later on in the sparks life.

Chlorine donor

A Chlorine Donor is a chlorine-rich compound when combined with a fuel within a pyrotechnic flame, certain colors can be produced or enriched. The following table can be used whenever we want to substitute one chlorine donor for another. In this case we would use more of the weaker donor to account for the missing chlorine.

Cherry bomb

Cherry bombs are usually round, approximately one inch (2.5 cm) in diameter, and colored red with a green fuse. They contain a core made of explosive flash powder, a layer of sawdust, and a coating of sodium silicate. They are powerful enough to cause very serious injury. 

Chemical grades

There are many Chemical grades and it is important to understand the grades of the chemicals you are buying or are available.


1. A.C.S. - A chemical grade of highest purity and meets or exceeds purity standards set by American Chemical Society (ACS).

2. Reagent - High purity generally equal to A.C.S. grade and suitable for use in many laboratory and analytical applications.


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