# Phosphorus trioxide (ID 2578)

- **operation:** document
- **citation:** ERG 2024 ID 2578
- **title:** Phosphorus trioxide (ID 2578)
- **source type:** guidance
- **agency:** U.S. DOT / Transport Canada / SICT
- **status:** guidance
- **official:** true
- **published on:** 2024-04-04
- **effective on:** Not available
- **summary:** ERG2024 assigns Phosphorus trioxide (ID 2578) to Guide 157: Substances - Toxic and/or Corrosive (Non-Combustible/Water-Sensitive).
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-erg-2024-material-id2578-phosphorus-trioxide.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-erg-2024-material-id2578-phosphorus-trioxide.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-erg-2024-material-id2578-phosphorus-trioxide
- **source url:** https://www.phmsa.dot.gov/erg/material?materialName=Phosphorus+trioxide&materialUn=2578
**body:**

ERG identification number: 2578.
Material: Phosphorus trioxide.
Assigned response guide: Guide 157, Substances - Toxic and/or Corrosive (Non-Combustible/Water-Sensitive).
The ERG index does not mark this entry with the P polymerization-hazard indicator.
- **truncated:** false
- **body characters:** 253