Methyl mercaptan

For Methyl mercaptan, cas no. is 74-93-1; cercla rq (lbs) is 100; rcra waste number is U153; regulatory categories is 1,4, verified against its source on 2026-08-05.

Substance: Methyl mercaptan
CAS No.: 74-93-1
CERCLA RQ (lbs): 100
RCRA waste number: U153
Regulatory categories: 1,4
EPCRA TPQ (lbs): 500 per ecfr.gov
EPCRA RQ (lbs): 100 per ecfr.gov

Sourceecfr.gov

Verified2026-08-05

Review by2027-08-05

DatasetUS federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA)

What the source says

Methyl mercaptan | 74-93-1 | 1,4 | U153 | 100 (45.4)

— ecfr.gov, retrieved 2026-08-05

What ecfr.gov says

500 | 74-93-1 | Methyl Mercaptan | f | 100 |

— ecfr.gov, retrieved 2026-08-05

Sources

ecfr.govhttps://www.ecfr.gov/current/title-40/chapter-I/subchapter-J/part-302/section-302.4
ecfr.govhttps://www.ecfr.gov/current/title-40/chapter-I/subchapter-J/part-355

Last verified against source: 2026-08-05. Scheduled for re-check by: 2027-08-05. This page as Markdown · OKF bundle · full dataset as JSON.