Allen chlorate flash #4

Composition

16  
Aluminium (dark pyro)
34  
Realgar

Description

DANGER: Chlorate/realgar mixes are extremely sensitive and highly dangerous, and can explode with little provocation. Even experienced individuals are encouraged to avoid such compositions.

DANGER: Chlorate flash mixtures decompose faster than perchlorate flash mixtures and are more sensitive to shock, flame, spark and friction.

Source: 
Allen