### Question
How is the term propane defined?


### Answer
The term **propane** is defined in *15 U.S.C. § 6402* as the following:

> a hydrocarbon whose chemical composition is predominantly C[3](#6402_3_target)H[8](#6402_8_target), whether recovered from natural gas or crude oil, and includes liquefied petroleum gases and mixtures thereof

#### Citation:
  - *15 U.S.C. § 6402*
  - Heading: **CHAPTER 90-PROPANE EDUCATION AND RESEARCH**

