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key component of a binary or multicomponent chemical system

Defined in 2 places across 2 titles of the United States Code.

The term “key component of a binary or multicomponent chemical system” means the precursor which plays the most important role in determining the toxic properties of the final product and reacts rapidly with other chemicals in the binary or multicomponent system.

Same definition in 2 sections

Key component of a binary or multicomponent chemical system.—The term "key component of a binary or multicomponent chemical system" means the precursor which plays the most important role in determining the toxic properties of the final product and reacts rapidly with other chemicals in the binary or multicomponent system.

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