Hexachlorobutadiene

For Hexachlorobutadiene, cas no. is 87-68-3; cercla rq (lbs) is 1; rcra waste number is U128; regulatory categories is 2,3,4, verified against its source on 2026-08-05.

Substance: Hexachlorobutadiene
CAS No.: 87-68-3
CERCLA RQ (lbs): 1
RCRA waste number: U128
Regulatory categories: 2,3,4

Sourceecfr.gov

Verified2026-08-05

Review by2027-08-05

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

What the source says

Hexachlorobutadiene | 87-68-3 | 2,3,4 | U128 | 1 (0.454)

— ecfr.gov, retrieved 2026-08-05

Source

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

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.