HazMat Tool — substance information

Signals, distress, ship

HMT May 2026
UN / ID
UN 0505
Hazard class
1.4G
Packing group
ERG guide
Special provisions
Source
49 CFR §172 (2026/05)

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Signals, distress, ship

Hazardous Materials Table

Source: 49 CFR §172 (2026/05)

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0505

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4G)

Compatibility group of explosives - Description of substances or article to be classified

Group: G

Pyrotechnic substance or article containing a pyrotechnic substance, or article containing both an explosive substance and an illuminating, incendiary, tear-producing or smoke-producing substance (other than a water-activated article or one containing white phosphorus, phosphide or flammable liquid or gel or hypergolic liquid).

Source: 49 CFR §173.52

Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102) Help

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) BulkNone

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(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.

Similar substances

UN / IDProper shipping nameHazard class
UN 0493Signals, railway track, explosive1.4G
UN 0492Signals, railway track, explosive1.3G
UN 0193Signals, railway track, explosive1.4S
UN 0192Signals, railway track, explosive1.1G