# Compatibility necessary for transportation of hazardous liquids or carbon dioxide.

**Citation:** 49 CFR 195.4  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

No person may transport any hazardous liquid or carbon dioxide unless the hazardous liquid or carbon dioxide is chemically compatible with both the pipeline, including all components, and any other commodity that it may come into contact with while in the pipeline.

[Amdt. 195-45, 56 FR 26925, June 

## Document text

No person may transport any hazardous liquid or carbon dioxide unless the hazardous liquid or carbon dioxide is chemically compatible with both the pipeline, including all components, and any other commodity that it may come into contact with while in the pipeline.

[Amdt. 195-45, 56 FR 26925, June 12, 1991]

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-195.4>
- Source ID: `ecfr`
- SHA-256: `085770ed30150a7b02ae89139f07244d9e9d40c0b33bb6543e9f54ae7dff052c`
- Retrieved: 2026-08-20T05:54:41.219Z
- Exported: 2026-08-22T06:11:06.055Z
- Document slug: `49-cfr-195-4`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "195",
  "section": "195.4",
  "subpart": "Subpart A—General",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```