Special provision 525
ADR 2025 — special provision (SP) 525, Chapter 3.3.
Solutions of inorganic cyanides with a total cyanide ion content of more than 30 % shall be classified in packing group I, solutions with a total cyanide ion content of more than 3 % and not more than 30 % in packing group II and solutions with a cyanide ion content of more than 0.3 % and not more than 3 % in packing group III.