HazMat Tool — substance information

Pyrophoric metals, n.o.s., or Pyrophoric alloys, n.o.s

HMT May 2026
UN / ID
UN 1383
Hazard class
4.2
Packing group
I
ERG guide
ERG 135
Special provisions
SP B11, SP T21, SP TP7, SP TP33, SP W31
Source
49 CFR §172 (2026/05)

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Pyrophoric metals, n.o.s., or Pyrophoric alloys, n.o.s

Emergency Response Guide No. 135

Hazardous Materials Table

Source: 49 CFR §172 (2026/05)

(3) Hazard Class

4.2
Spontaneously combustible materials

(4) Identification number Help

UN 1383

(5) Packing Group Help

I

(6) Labels Help

Spontaneously combustible materials (4.2)

(1) Symbols Help


This entry is signed with "G". The letter "G" identifies proper shipping names for which one or more technical names of the hazardous material must be entered in parentheses, in association with the basic description. (See §172.203(k)).

(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.
B11
T21
TP7
TP33
W31

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

(8A) ExceptionsNone
(8B) Non-bulk187see 49 CFR §173.187
(8C) Bulk242see 49 CFR §173.242

(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.