1. Regulations
  2. title 40
  3. chapter I-i12
  4. part 63
  5. subpart PPP
  6. appendix-i 3

- Table 4 to Subpart PPP of Part 63—Known Organic HAP From Polyether Polyol Products

Organic HAP/chemical name
[CAS No.] 		1,3 Butadiene (106990) Butylene Oxide (106887) Epichlorohydrin (106898) Ethylene Oxide (75218) n-Hexane (110543) Methanol (67561) Propylene Oxide (75569) Toluene (108883)

CAS No. = Chemical Abstracts Service Registry Number.

[65 FR 26505, May 8, 2000; 91 FR 13189, Mar. 18, 2026]

AUTHORITY: 42 U.S.C. 7401

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