HazMat Tool — substance information

Cartridges, power device

HMT May 2026

UN / ID: UN 0323
Hazard class: 1.4S
Packing group: —
ERG guide: —
Special provisions: SP 110, SP 347
Source: 49 CFR §172 (2026/05)

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Cartridges, power device

Hazardous Materials Table

Source: 49 CFR §172 (2026/05)

(3) Hazard Class

1.4
Explosives

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

Group: S

Substance or article so packed or designed that any hazardous effects arising from accidental functioning are limited to the extent that they do not significantly hinder or prohibit fire fighting or other emergency response efforts in the immediate vicinity of the package.

Source: 49 CFR §173.52

(7) Special Provisions (§172.102)

×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.

110	Fire extinguishers transported under UN1044 and oxygen cylinders transported for emergency use under UN1072 may include installed actuating cartridges (cartridges, power device of Division 1.4C or 1.4S), without changing the classification of Division 2.2, provided the aggregate quantity of deflagrating (propellant) explosives does not exceed 3.2 grams per cylinder. Oxygen cylinders with installed actuating cartridges as prepared for transportation must have an effective means of preventing inadvertent activation. Browse special provision 110
347	Effective July 1, 2011, for transportation by aircraft, this entry may only be used if the results of Test series 6(d) of Part I of the UN Manual of Tests and Criteria (IBR, see §171.7) have demonstrated that any hazardous effects from accidental functioning are confined to within the package. Effective January 1, 2012, for transportation by vessel, this entry may only be used if the results of Test Series 6(d) of Part I of the UN Manual of Tests and Criteria (IBR, see §171.7) have demonstrated that any hazardous effects from accidental functioning are confined to within the package. Effective January 1, 2014, for transportation domestically by highway or rail, this entry may only be used if the results of Test Series 6(d) of Part I of the UN Manual of Tests and Criteria (IBR, see §171.7) have demonstrated that any hazardous effects from accidental functioning are confined to within the package. Testing must be performed or witnessed by a person who is approved by the Associate Administrator (see §173.56). All successfully conducted tests or reassignment to another compatibility group require the issuance of a new or revised approval by the Associate Administrator prior to transportation on or after the dates specified for each authorized mode of transport in this special provision. Browse special provision 347

(8) Packing Authorizations (§173.***)

(8A) Exceptions	63	see 49 CFR §173.63
(8B) Non-bulk	62	see 49 CFR §173.62
(8C) Bulk	62	see 49 CFR §173.62

(9) Quantity Limits

(9A) Passenger aircraft/rail	25 kg
(9B) Cargo aircraft only	100 kg

(10) Vessel stowage

(10A) Location

Stowage category “01” means the material may be stowed “on deck” in closed cargo transport units or “under deck” on a cargo vessel (up to 12 passengers) or on a passenger vessel.

Source: 49 CFR §172.101(k)

(10B) Other

25	see 49 CFR §176.84

Source: 49 CFR §176.84

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 2037	Receptacles, small, containing gas or gas cartridges (flammable) without release device, not refillable and not exceeding 1 L capacity	2.1
UN 2037	Receptacles, small, containing gas or gas cartridges (non-flammable) without release device, not refillable and not exceeding 1 L capacity	2.2
UN 2037	Receptacles, small, containing gas or gas cartridges (oxidizing), without release device, not refillable and not exceeding 1 L capacity	2.2
UN 3150	Devices, small, hydrocarbon gas powered or Hydrocarbon gas refills for small devices with release device	2.1
NA 1693	Tear gas devices with more than 2 percent tear gas substances, by mass	6.1
	Cartridges, safety, see Cartriges for weapons, inert projectile, or Cartridges, small arms or Cartridges, power device (UN 0323)
	Air bag inflators, or Air bag modules, or Seat-belt pretensioners, see Safety devices, electrically initiated or Safety devices, pyrotechnic
UN 2028	Bombs, smoke, non-explosive, with corrosive liquid, without initiating device	8
UN 0099	Fracturing devices, explosive, without detonators for oil wells	1.1D
UN 2870	Aluminum borohydride or Aluminum borohydride in devices	4.2
UN 2037	Gas cartridges, (flammable) without a release device, non-refillable	2.1
	Tear gas devices, with not more than 2 percent tear gas substances, by mass, see Aerosols, etc
	Flammable compressed gas (small receptacles not fitted with a dispersion device, not refillable), see Receptacles, etc
UN 3268	Safety devices, electrically initiated	9
UN 0173	Release devices, explosive	1.4S