HazMat Tool — substance information

Bombs, photo-flash

HMT 15 June 2026

UN / ID: UN 0039
Hazard class: 1.2G
Packing group: n/a (multiple — see tabs)
ERG guide: —
Special provisions: —
Source: 49 CFR §172 (15 June 2026)

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Bombs, photo-flash

A bomb is an explosive weapon that uses the exothermic reaction of an explosive material to provide an extremely sudden and violent release of energy. Detonations inflict damage principally through ground- and atmosphere-transmitted mechanical stress, the impact and penetration of pressure-driven projectiles, pressure damage, and explosion-generated effects. Bombs have been utilized since the 11th century starting in East Asia. The term bomb is not usually applied to explosive devices used for civilian purposes such as construction or mining, although the people using the devices may sometimes refer to them as a "bomb" Wikipedia

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

Packing group
Packing group
Packing group

(3) Hazard Class

1.2
Explosives

(4) Identification number

UN 0039

(5) Packing Group

n/a

Comparison View of PG

(6) Labels

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

(7) Special Provisions (§172.102)

(8) Packing Authorizations (§173.***)

(8A) Exceptions	n/a	see 49 CFR §173. n/a
(8B) Non-bulk	62	see 49 CFR §173.62
(8C) Bulk	62	see 49 CFR §173.62

(9) Quantity Limits

(9A) Passenger aircraft/rail	Forbidden
(9B) Cargo aircraft only	Forbidden

(10) Vessel stowage

(10A) Location

Stowage category “03” means the material may be stowed “on deck” in closed cargo transport units or “under deck” on a cargo vessel (up to 12 passengers) but the material is prohibited on a passenger vessel.

Source: 49 CFR §172.101(k)

(10B) Other

25	see 49 CFR §176.84

Source: 49 CFR §176.84

(3) Hazard Class

1.3
Explosives

(4) Identification number

UN 0299

(5) Packing Group

n/a

Comparison View of PG

(6) Labels

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

Group: G

(7) Special Provisions (§172.102)

(8) Packing Authorizations (§173.***)

(8A) Exceptions	n/a	see 49 CFR §173. n/a
(8B) Non-bulk	62	see 49 CFR §173.62
(8C) Bulk	62	see 49 CFR §173.62

(9) Quantity Limits

(9A) Passenger aircraft/rail	Forbidden
(9B) Cargo aircraft only	Forbidden

(10) Vessel stowage

(10A) Location

Source: 49 CFR §172.101(k)

(10B) Other

25	see 49 CFR §176.84

Source: 49 CFR §176.84

(3) Hazard Class

1.1
Explosives

(4) Identification number

UN 0037

(5) Packing Group

n/a

Comparison View of PG

(6) Labels

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

Group: F

Article containing a secondary detonating explosive substance with its means of initiation, with a propelling charge (other than one containing flammable liquid or gel or hypergolic liquid) or without a propelling charge.

Source: 49 CFR §173.52

(7) Special Provisions (§172.102)

(8) Packing Authorizations (§173.***)

(8A) Exceptions	n/a	see 49 CFR §173. n/a
(8B) Non-bulk	62	see 49 CFR §173.62
(8C) Bulk	None

(9) Quantity Limits

(9A) Passenger aircraft/rail	Forbidden
(9B) Cargo aircraft only	Forbidden

(10) Vessel stowage

(10A) Location

Source: 49 CFR §172.101(k)

(10B) Other

25	see 49 CFR §176.84

Source: 49 CFR §176.84

(3) Hazard Class

1.1
Explosives

(4) Identification number

UN 0038

(5) Packing Group

n/a

Comparison View of PG

(6) Labels

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

Group: D

Secondary detonating explosive substance or black powder or article containing a secondary detonating explosive substance, in each case without means of initiation and without a propelling charge, or article containing a primary explosive substance and containing two or more effective protective features.

Source: 49 CFR §173.52

(7) Special Provisions (§172.102)

(8) Packing Authorizations (§173.***)

(8A) Exceptions	n/a	see 49 CFR §173. n/a
(8B) Non-bulk	62	see 49 CFR §173.62
(8C) Bulk	62	see 49 CFR §173.62

(9) Quantity Limits

(9A) Passenger aircraft/rail	Forbidden
(9B) Cargo aircraft only	Forbidden

(10) Vessel stowage

(10A) Location

Source: 49 CFR §172.101(k)

(10B) Other

25	see 49 CFR §176.84

Source: 49 CFR §176.84

Packing group comparison

Multiple packing groups apply to this entry. See assignment criteria in 49 CFR §173 Subpart D. Details are in the tabs above; differences are highlighted.

	PG n/a	PG n/a	PG n/a	PG n/a
1
2	Bombs, photo-flash	Bombs, photo-flash	Bombs, photo-flash	Bombs, photo-flash
3	1.2G	1.3G	1.1F	1.1D
4	UN 0039	UN 0299	UN 0037	UN 0038
5	n/a	n/a	n/a	n/a
6	1.2G	1.3G	1.1F	1.1D
7	n/a	n/a	n/a	n/a
8A	n/a	n/a	n/a	n/a
8B	62	62	62	62
8C	62	62	None	62
9A	Forbidden	Forbidden	Forbidden	Forbidden
9B	Forbidden	Forbidden	Forbidden	Forbidden
10A	03	03	03	03
10B	25	25	25	25

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.

Hazard class	8	7	6.1	5.2	5.1	4.3	4.2	4.1	3	2.3B	2.3A	2.2	2.1	1.6	1.5	1.4	1.3	1.1/1.2
1.1/1.2
1.3
1.4
1.5
1.6
2.1
2.2
2.3A
2.3B
3
4.1
4.2
4.3
5.1
5.2
6.1
7
8

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

Similar substances

UN / ID	Proper shipping name	Hazard class
UN 2028	Bombs, smoke, non-explosive, with corrosive liquid, without initiating device	8
UN 0400	Bombs with flammable liquid, with bursting charge	1.2J
UN 0399	Bombs with flammable liquid, with bursting charge	1.1J
UN 0033	Bombs, with bursting charge	1.1F
UN 0034	Bombs, with bursting charge	1.1D
UN 0291	Bombs, with bursting charge	1.2F
UN 0035	Bombs, with bursting charge	1.2D