Weingart chlorate flash

Composition

27  
Sulfur
9  
Aluminium (dark pyro)
9  
Charcoal

Description

DANGER: Chlorate and sulfur/sulfide mixes are known to be very sensitive to shock, flame, spark and friction.

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

Source: 
Weingart