1,3-Isobenzofurandione

For 1,3-Isobenzofurandione, cas no. is 85-44-9; cercla rq (lbs) is 5000; rcra waste number is U190; regulatory categories is 3,4, verified against its source on 2026-08-05.

Substance: 1,3-Isobenzofurandione verified
CAS No.: 85-44-9 verified
CERCLA RQ (lbs): 5000 verified
RCRA waste number: U190 verified
Regulatory categories: 3,4 verified

Sourceecfr.gov

Verified2026-08-05

Review by2027-08-05

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

What the source says

1,3-Isobenzofurandione | 85-44-9 | 3,4 | U190 | 5000 (2270)

— 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. Due for re-check by 2027-08-05. This page as Markdown · OKF bundle · full dataset as JSON.