HazMat Tool — substance information

Titanium trichloride, pyrophoric or Titanium trichloride mixtures, pyrophoric

HMT 15 June 2026
Reference only — HMT snapshot for inspection and audit support; not a shipping paper, placard mandate, or CVI record. Use Print / PDF below for field notes.
UN / ID
UN 2441
Hazard class
4.2
Packing group
I
ERG guide
ERG 135
Special provisions
SP N34, SP W31
Source
49 CFR §172 (15 June 2026)

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Titanium trichloride, pyrophoric or Titanium trichloride mixtures, pyrophoric


Titanium(III) chloride is the inorganic compound with the formula TiCl3. In its pure anhydrous form, it is a violet-colored solid. At least four distinct species have this formula; additionally hydrated derivatives are known. TiCl3 is one of the most common halides of titanium and is an important catalyst for the manufacture of polyolefins Wikipedia

Emergency Response Guide No. 135

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard Class

4.2
Spontaneously combustible materials

(4) Identification number Help

UN 2441

(5) Packing Group Help

I

(6) Labels Help

Spontaneously combustible materials (4.2) Corrosive liquids (8)

(7) Special Provisions (§172.102) Help

×Note:
Special provisions may be very complex. The extracts are taken from 49 CFR §172.102. Please be careful with the information, as necessary, additional conditions may be applied that are not written here. Please check the original source and report bugs.
N34
W31

(8) Packing Authorizations (§173.***) Help

(8A) ExceptionsNone
(8B) Non-bulk181see 49 CFR §173.181
(8C) Bulk244see 49 CFR §173.244

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft onlyForbidden

(10) Vessel stowage Help

(10A) Location
(10B) Other

Segregation chart for load, transport, and storage

This chart shows whether loading, transport, or storage with other hazard classes is permitted, prohibited, or restricted. Based on 49 CFR §177.848.

Prohibited Must not be loaded, transported, or stored together in the same vehicle or facility.
Permitted May be loaded, transported, or stored together.
Restricted May be loaded, transported, or stored together only with restrictions.