PHMSA Aerosol Definition Update (Hazardous Materials Regulations)
Current understanding
To be populated as evidence accumulates.
Evidence log
- 2026-08-04 — Hazardous Materials: Reducing Burdens on Domestic Aerosol Shippers: PHMSA final rule amends the Hazardous Materials Regulations to update the definition of an aerosol, aiming to reduce burdens on domestic shippers and align the HMR with international transportation standards. (novelty: 2)
Open questions
Related
Contributing findings
Hazardous Materials: Reducing Burdens on Domestic Aerosol Shippers
04-aug-2026
novelty 2
per-area 2
introduces