# Division 4.2 materials — Hazmat load segregation — which hazard classes may travel together, highway vs vessel

For Division 4.2 materials, second hazard class (table column) is Class 8 liquids; transport mode is Carriage by Public Highway; what the code requires is Division 4.2 materials may not be stored, loaded and transported with Class 8 liquids, verified against its source on 2026-08-10.

- **First hazard class (table row):** Division 4.2 materials _(verified: appears in the quote below)_
- **Second hazard class (table column):** Class 8 liquids _(verified: appears in the quote below)_
- **Transport mode:** Carriage by Public Highway _(verified: appears in the quote below)_
- **What the code requires:** Division 4.2 materials may not be stored, loaded and transported with Class 8 liquids _(verified: appears in the quote below)_

## What the source says

> ( c ) In addition to the provisions of <https://www.ecfr.gov/current/title-49/section-177.848#p-177.848(d)> paragraph (d) of this section and except as provided in <https://www.ecfr.gov/current/title-49/section-173.12#p-173.12(e)> § 173.12(e) of this subchapter , cyanides, cyanide mixtures or solutions may not be stored, loaded and transported with acids if a mixture of the materials would generate hydrogen cyanide; Division 4.2 materials may not be stored, loaded and transported with Class 8 liquids; and Division 6.1 Packing Group I, Hazard Zone A material may not be stored, loaded and transported with Class 3 material, Class 8 liquids, and Division 4.1, 4.2, 4.3, 5.1 or 5.2 materials.

## Source

- https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848

Last verified: 2026-08-10. Review by: 2027-08-10.
Part of [Hazmat load segregation — which hazard classes may travel together, highway vs vessel](https://referencesource.org/hazmat-segregation-matrix/).