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]