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

For Sodium azide, cas no. is 26628-22-8; cercla rq (lbs) is 1000; rcra waste number is P105; regulatory categories is 4, verified against its source on 2026-08-05.

- **Substance:** Sodium azide _(verified: appears in the quote below)_
- **CAS No.:** 26628-22-8 _(verified: appears in the quote below)_
- **CERCLA RQ (lbs):** 1000 _(verified: appears in the quote below)_
- **RCRA waste number:** P105 _(verified: appears in the quote below)_
- **Regulatory categories:** 4 _(verified: appears in the quote below)_
- **EPCRA TPQ (lbs):** 500 _(per ecfr.gov, not stated by the source above)_
- **EPCRA RQ (lbs):** 1,000 _(per ecfr.gov, not stated by the source above)_

## What the source says

> Sodium azide | 26628-22-8 | 4 | P105 | 1000 (454)

## What ecfr.gov says

> 500/10,000 | 26628-22-8 | Sodium Azide (Na(N 3 )) | a | 1,000 |

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/).