Chlorpyrifos

For Chlorpyrifos, cas no. is 2921-88-2; cercla rq (lbs) is 1; regulatory categories is 1, verified against its source on 2026-08-05.

What the source says

Chlorpyrifos | 2921-88-2 | 1 | | 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.