# Pyrene — US federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA)

For Pyrene, cas no. is 129-00-0; cercla rq (lbs) is 5000; regulatory categories is 2, verified against its source on 2026-08-05.

- **Substance:** Pyrene _(verified: appears in the quote below)_
- **CAS No.:** 129-00-0 _(verified: appears in the quote below)_
- **CERCLA RQ (lbs):** 5000 _(verified: appears in the quote below)_
- **Regulatory categories:** 2 _(verified: appears in the quote below)_
- **EPCRA TPQ (lbs):** 1,000/10,000 _(per ecfr.gov, not stated by the source above)_
- **EPCRA RQ (lbs):** 5,000 _(per ecfr.gov, not stated by the source above)_

## What the source says

> Pyrene | 129-00-0 | 2 | | 5000 (2270)

## What ecfr.gov says

> 129-00-0 | Pyrene | b | 5,000 | 1,000/10,000 |

Source: https://www.ecfr.gov/current/title-40/chapter-I/subchapter-J/part-355

## Source

- https://www.ecfr.gov/current/title-40/chapter-I/subchapter-J/part-302/section-302.4
- https://www.ecfr.gov/current/title-40/chapter-I/subchapter-J/part-355

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/).