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It's the base star of pyrotechnics, it leaves an orange trail.
The amount of sparks and their color are due to the type of coal used.
KNO3 - 44%
Charcoal (airfloat) - 44%
Sulfur - 6%
Dextrin - 6%
It's a not particularly dangerous substance, but it can reach high temperature
it is recommended to handle it with care
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