Resin
Resin means any thermosetting resin with or without pigment containing styrene (CAS No. 100-42-5) or methyl methacrylate (CAS No. 80-62-6) and used to encapsulate and bind together reinforcement fibers in the construction of fiberglass parts.
Source
40 CFR § 63.5779
Scoping language
Terms used in this subpart are defined in the Clean Air Act, in 63.2, and in this section as follows: