Smoke powder

Smoke powder

Smoke powder describes a pyrotechnic powder that is used to generate smoke ( smoke generator ). In Germany, the production of this powder without a permit is prohibited.

White smoke powder

White smoke powder contains a mixture of

• 40 mass% ammonium chloride ,
• 30% by mass of oxidizing agent such as potassium chlorate , otherwise there is a risk of the formation of unstable ammonium chlorate
• 30% by mass of organic natural products in powder form, such as resins, sugar.

function

The combustion of organic substances creates heat that breaks down the ammonium chloride into the gases hydrogen chloride and ammonia, a thermal dissociation . The gases rise, lose temperature and, when cooled, react back to form ammonium chloride ( Brønsted acid-base reaction ). A thick white ammonium chloride smoke is produced. The term ammonium chloride mist is incorrect because it is not about liquid droplets, but solid particles.

1. ${\displaystyle \mathrm {NH_{4}Cl\longrightarrow NH_{3}+HCl} }$ (Thermal dissociation)
2. ${\displaystyle \mathrm {HCl+NH_{3}\longrightarrow NH_{4}Cl} }$ (Brønsted acid-base reaction)

See also

• Smoke grenade
• Smoke machine

Individual evidence

1. ↑ For more information, see the Law on Explosive Substances .

Web links

• Facts in connection with pyrotechnics (accessed on May 15, 2020)
• Safety data sheet according to 2001/58 / EG (accessed on May 15, 2020)
• Security at events and productions (accessed on May 15, 2020)
• Pyrotechnics in German stadiums - possible solutions for a "burning" problem (accessed on May 15, 2020)