# Mercury (ID 2809)

**Citation:** ERG 2024 ID 2809  
**Type / status:** guidance / guidance  
**Agency:** U.S. DOT / Transport Canada / SICT  
**Effective:** Not stated  
**Published:** 2024-04-04

ERG2024 assigns Mercury (ID 2809) to Guide 172: Gallium and Mercury.

## Document text

ERG identification number: 2809.
Material: Mercury.
Assigned response guide: Guide 172, Gallium and Mercury.
The ERG index does not mark this entry with the P polymerization-hazard indicator.

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/erg/material?materialName=Mercury&materialUn=2809>
- Source ID: `phmsa-erg-2024`
- SHA-256: `109fb3991601ea4c9d6f9868510a8395eb682a2a563cb8c2f2e65f5e84dbd4b8`
- Retrieved: 2026-08-13T11:31:32.574Z
- Exported: 2026-08-25T08:36:21.014Z
- Document slug: `phmsa-erg-2024-material-id2809-mercury`

### Source metadata

```json
{
  "edition": 2024,
  "language": "English",
  "jurisdiction": "US",
  "caveat": "Emergency-response guidance for the initial phase of a transportation incident. It is not controlling regulation, a compliance determination, a chemical-specific worker safety document, or a substitute for required shipping-paper emergency-response information.",
  "materialSubtype": "phmsa_erg_material",
  "recordKind": "material",
  "collectionId": "phmsa-erg-2024-overview",
  "parentDocumentId": "phmsa-erg-2024-overview",
  "sourceDateLabel": "Effective Date",
  "sourceDate": "2024-04-04",
  "idNumber": "2809",
  "materialName": "Mercury",
  "guideNumber": 172,
  "guideTitle": "Gallium and Mercury",
  "polymerizationHazard": false,
  "physicalPage": 62,
  "pdfUrl": "https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/2024-04/ERG2024-Eng-Web-a.pdf#page=62"
}
```