# 4-Chlorophenyl phenyl ether — US federal chemical regulatory reporting thresholds by program (CERCLA, EPCRA, CAA)

For 4-Chlorophenyl phenyl ether, cas no. is 7005-72-3; cercla rq (lbs) is 5000; regulatory categories is 2, verified against its source on 2026-08-05.

- **Substance:** 4-Chlorophenyl phenyl ether _(verified: appears in the quote below)_
- **CAS No.:** 7005-72-3 _(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)_

## What the source says

> 4-Chlorophenyl phenyl ether | 7005-72-3 | 2 | | 5000 (2270)

## 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/).