### Question
What does key component of a binary or multicomponent chemical system mean?


### Answer
**Key component of a binary or multicomponent chemical system** has the following meaning in *18 U.S.C. § 229F*:

> 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

#### Citation:
  - *18 U.S.C. § 229F*
  - Heading: **PART I-CRIMES > CHAPTER 11B-CHEMICAL WEAPONS**

