1. Regulations
  2. title 40
  3. chapter I-i11
  4. part 63
  5. subpart XX
  6. appendix

- Table 1 to Subpart XX of Part 63—Hazardous Air Pollutants

Hazardous air pollutant CAS No. Benzene71432 1,3-Butadiene106990 Cumene98828 Ethyl benzene100414 Hexane110543 Naphthalene91203 Styrene100425 Toluene108883 o-Xylene95476 m-Xylene108383 p-Xylene106423

AUTHORITY: 42 U.S.C. 7401

SOURCE: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.