beta-Propiolactone
For beta-Propiolactone, cas no. is 57-57-8; cercla rq (lbs) is 10; regulatory categories is 3, verified against its source on 2026-09-16.
- Substance
- beta-Propiolactone verified
- CAS No.
- 57-57-8 verified
- CERCLA RQ (lbs)
- 10 verified
- Regulatory categories
- 3 verified
- EPCRA TPQ (lbs)
- 500 per ecfr.gov
- EPCRA RQ (lbs)
- 10 per ecfr.gov
What the source says
beta-Propiolactone | 57-57-8 | 3 | | 10 (4.54)
— ecfr.gov, retrieved 2026-08-05
What ecfr.gov says
57-57-8 | Propiolactone, Beta- | | 10 | 500 |
— ecfr.gov, retrieved 2026-08-05