A62DLevel 3

CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS

**Definition:** This place covers:

Compositions:

Use of chemical substances in extinguishing fires.

Processes chemical, bio-chemical or physico-chemical for chemically altering harmful chemical substances into safe or less dangerous substances.

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A62D 1/00Fire-extinguishing compositions

A62D 2101/00Harmful chemical substances made harmless, or less harmful, by effecting chemical change

A62D 2203/00Aspects of processes for making harmful chemical substances harmless, or less harmful, by effecting chemical change in the substances

A62D 3/00Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances

A62D 5/00Composition of materials for coverings or clothing affording protection against harmful chemical agents

A62D 7/00Composition of materials for transparent parts of gas-masks, respirators, breathing bags, or helmets

A62D 9/00Composition of chemical substances for use in breathing apparatus

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