# DDE b (3547-04-4) — US federal chemical regulatory reporting thresholds by program (CERCLA and EPCRA)

For DDE b (3547-04-4), substance is DDE b; cas no. is 3547-04-4; cercla rq (lbs) is 5000; regulatory categories is 3, verified against its source on 2026-09-16.

- **Substance:** DDE b _(verified: appears in the quote below)_
- **CAS No.:** 3547-04-4 _(verified: appears in the quote below)_
- **CERCLA RQ (lbs):** 5000 _(verified: appears in the quote below)_
- **Regulatory categories:** 3 _(verified: appears in the quote below)_

## What the source says

> DDE b | 3547-04-4 | 3 | | 5000 (2270)

## Source

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

Last verified: 2026-09-16. Review by: 2027-09-01.
Part of [US federal chemical regulatory reporting thresholds by program (CERCLA and EPCRA)](https://referencesource.org/chemical-regulatory-reporting-thresholds/).