containing nitrogen or phosphorus

Full Title

Harmful chemical substances made harmless, or less harmful, by effecting chemical change > Organic substances > containing nitrogen or phosphorus

Classification Context

Section:

HUMAN NECESSITIES

Class:

LIFE-SAVING; FIRE-FIGHTING

Subclass:

CHEMICAL MEANS FOR EXTINGUISHING FIRES; PROCESSES FOR MAKING HARMFUL CHEMICAL SUBSTANCES HARMLESS, OR LESS HARMFUL, BY EFFECTING A CHEMICAL CHANGE; COMPOSITION OF MATERIALS FOR COVERINGS OR CLOTHING FOR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; COMPOSITION OF MATERIALS FOR TRANSPARENT PARTS OF GAS-MASKS, RESPIRATORS, BREATHING BAGS OR HELMETS; COMPOSITION OF CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS