UNunnums
1352

UN 1352Titanium powder, wetted with not less than 25 percent water (a visible excess of water must be present) (a) mechanically produced, particle size less than 53 micrometres; (b) chemically produced, particle size less than 840 micrometres

Division 4.1

Flammable solids

Summary

UN 1352 is the UN number for titanium powder, wetted with not less than 25 percent water (a visible excess of water must be present) (a) mechanically produced, particle size less than 53 micrometres; (b) chemically produced, particle size less than 840 micrometres. It is classed in Division 4.1 (flammable solids) of Class 4 for transport. Packing group II. Emergency responders use ERG guide 170.

Emergency response

The Emergency Response Guidebook (ERG2024) guide for this number:

  • Guide170Titanium powder, wetted with not less than 25% water

From the 2024 Emergency Response Guidebook (ERG2024), published by U.S. Department of Transportation, PHMSA. Read the full guide in the ERG or on CAMEO Chemicals.

Identification

UN number
UN 1352
Name
Titanium powder, wetted with not less than 25 percent water (a visible excess of water must be present) (a) mechanically produced, particle size less than 53 micrometres; (b) chemically produced, particle size less than 840 micrometres
Hazard class
Class 4: Flammable solids
Division
4.1: Flammable solids
Packing group
II
What the class covers
Flammable solids, self-reactive substances and solid desensitized explosives.

U.S. Hazardous Materials Table

The entry for this number in 49 CFR 172.101.

  • UN1352Titanium powder, wetted

    with not less than 25 percent water (a visible excess of water must be present) (a) mechanically produced, particle size less than 53 microns; (b) chemically produced, particle size less than 840 microns

    Special provisions: A19, A20, IB6, IP2, N34, T3, TP33, W31, W40

    Class
    4.1
    Packing group
    II
    Labels
    4.1

From the eCFR edition of 49 CFR 172.101 dated 2026-10-05 (section last amended 2026-09-08). The eCFR is an editorial compilation, not the official legal edition. Read the current table.

About Class 4

Class 4 covers flammable solids and other substances that can catch fire. Division 4.1 is flammable solids and self-reactive substances, 4.2 is substances that can spontaneously combust in air, and 4.3 is substances that give off flammable gas when wet.

See all Class 4 UN numbers

Check the official sources

For emergency response, packaging and quantity limits, use these: