You will need this permit if you intend to purchase, possess or use cyanide or use products containing cyanide.
Cyanide is a rapidly acting, poisonous chemical that can exist as a solid, solution (liquid) or gas. All forms of cyanide are poisonous. Cyanide salts are used in metallurgy - mainly gold extraction, electroplating and metal cleaning. Cyanide is also used to manufacture paper, textiles and plastics.