# Indeno(1,2,3-cd)pyrene — US federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA)

For Indeno(1,2,3-cd)pyrene, cas no. is 193-39-5; cercla rq (lbs) is 100; rcra waste number is U137; regulatory categories is 2,4, verified against its source on 2026-08-05.

- **Substance:** Indeno(1,2,3-cd)pyrene _(verified: appears in the quote below)_
- **CAS No.:** 193-39-5 _(verified: appears in the quote below)_
- **CERCLA RQ (lbs):** 100 _(verified: appears in the quote below)_
- **RCRA waste number:** U137 _(verified: appears in the quote below)_
- **Regulatory categories:** 2,4 _(verified: appears in the quote below)_

## What the source says

> Indeno(1,2,3-cd)pyrene | 193-39-5 | 2,4 | U137 | 100 (45.4)

## Source

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

Last verified: 2026-08-05. Review by: 2027-08-05.
Part of [US federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA)](https://referencesource.org/chemical-regulatory-reporting-thresholds/).