# Hazardous Materials: Reducing Burdens on Domestic Aerosol Shippers

**Action Urgency Score:** 30/100

| Field | Value |
|---|---|
| Agency | Transportation Department; Pipeline and Hazardous Materials Safety Administration |
| Type | Final rule |
| Action | Final rule. |
| Published | 2026-08-04 |
| Effective | 2026-09-03 |
| Significant | No |
| CFR parts | 49 CFR 171 |
| Summary | PHMSA is amending the Hazardous Materials Regulations by updating the definition of an aerosol to eliminate unnecessary regulatory burdens and maintain consistency with current international transportation standards. |
| Document number | 2026-15803 |

## Why this score
- Final rule.

Source: Federal Register API (Office of the Federal Register) (https://www.federalregister.gov/documents/2026/08/04/2026-15803/hazardous-materials-reducing-burdens-on-domestic-aerosol-shippers). Last refreshed: 2026-11-04T21:40:49.974Z.
Data from the Federal Register API; the published Federal Register document is authoritative. Informational only, not legal advice.