# Styrene monomer, stabilized (ID 2055)

- **operation:** document
- **citation:** ERG 2024 ID 2055
- **title:** Styrene monomer, stabilized (ID 2055)
- **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 Styrene monomer, stabilized (ID 2055) to Guide 128: Flammable Liquids (Water-Immiscible).
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-erg-2024-material-id2055-styrene-monomer-stabilized.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-erg-2024-material-id2055-styrene-monomer-stabilized.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-erg-2024-material-id2055-styrene-monomer-stabilized
- **source url:** https://www.phmsa.dot.gov/erg/material?materialName=Styrene+monomer%2C+stabilized&materialUn=2055
**body:**

ERG identification number: 2055.
Material: Styrene monomer, stabilized.
Assigned response guide: Guide 128, Flammable Liquids (Water-Immiscible).
The ERG index marks this entry with P for a polymerization hazard under certain conditions.
- **truncated:** false
- **body characters:** 237