Reference Source

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 2026-09-16.

Substance
Methyl mercaptan verified
CAS No.
74-93-1 verified
CERCLA RQ (lbs)
100 verified
RCRA waste number
U153 verified
Regulatory categories
1,4 verified
EPCRA TPQ (lbs)
500 per ecfr.gov
EPCRA RQ (lbs)
100 per ecfr.gov
Sourceecfr.gov
Verified
Review by
DatasetUS federal chemical regulatory reporting thresholds by program (CERCLA and EPCRA)

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

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

ecfr.gov, retrieved 2026-08-05

Sources

Last verified against source: . Due for re-check by . This page as Markdown · OKF bundle · full dataset as JSON.