40 CFR Part 82, Appendix E — Unacceptable Substitutes Listed in the January 26, 1999 Final Rule, Effective January 26, 1999
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
| End-use | Substitute | Decision | Comments |
|---|---|---|---|
| All refrigeration and air-conditioning end uses | MT-31 | Unacceptable | Chemical contained in this blend presents unacceptable toxicity risk. |
[64 FR 3865, Jan. 26, 1999]