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

For Mercuric cyanide, cas no. is 592-04-1; cercla rq (lbs) is 1; regulatory categories is 1, verified against its source on 2026-08-05.

- **Substance:** Mercuric cyanide _(verified: appears in the quote below)_
- **CAS No.:** 592-04-1 _(verified: appears in the quote below)_
- **CERCLA RQ (lbs):** 1 _(verified: appears in the quote below)_
- **Regulatory categories:** 1 _(verified: appears in the quote below)_

## What the source says

> Mercuric cyanide | 592-04-1 | 1 | | 1(0.454)

## 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/).