Cite as 40 C.F.R. Table 1 to Subpart XX of Part 63 (2026)
Hazardous air pollutant CAS No. Benzene 71432 1,3-Butadiene 106990 Cumene 98828 Ethyl benzene 100414 Hexane 110543 Naphthalene 91203 Styrene 100425 Toluene 108883 o-Xylene 95476 m-Xylene 108383 p-Xylene 106423