Unsaturated halogenated ethers

Unsaturated halogenated ethers means fluorinated GHGs in which two hydrocarbon groups are linked by an oxygen atom; in which one or more of the hydrogen atoms in the hydrocarbon groups have been replaced by fluorine atoms; and which contain one or more bonds that are not single bonds. Unsaturated ethers include unsaturated HFEs.

Source

40 CFR § 98.6


Scoping language

All terms used in this part shall have the same meaning given in the Clean Air Act and in this section.

Is this correct? or