HazMat Tool — substance information

Model rocket motor

HMT 15 June 2026

UN / ID: NA 0323
Hazard class: 1.4S
Packing group: —
ERG guide: —
Special provisions: SP 51
Source: 49 CFR §172 (15 June 2026)

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Model rocket motor

A model is an informative representation of an object, person, or system. The term originally denoted the plans of a building in 16th-century English, and derived via French and Italian ultimately from Latin modulus, 'a measure'. Models can be divided into physical models (e.g. a ship model) and abstract models (e.g Wikipedia

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard Class

1.4
Explosives

(4) Identification number

NA 0323

(5) Packing Group

n/a

(6) Labels

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

(1) Symbols

This entry is signed with "D". The letter "D" identifies proper shipping names which are appropriate for describing materials for domestic transportation but may be inappropriate for international transportation under the provisions of international regulations (e.g., IMO, ICAO). An alternate proper shipping name may be selected when either domestic or international transportation is involved.

(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.

51	This description applies to items previously described as “Toy propellant devices, Class C” and includes reloadable kits. Model rocket motors containing 30 grams or less propellant are classed as Division 1.4S and items containing more than 30 grams of propellant but not more than 62.5 grams of propellant are classed as Division 1.4C. Browse special provision 51

(8) Packing Authorizations (§173.***)

(8A) Exceptions	None
(8B) Non-bulk	62	see 49 CFR §173.62
(8C) Bulk	None

(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 0250	Rocket motors with hypergolic liquids with or without an expelling charge	1.3L
UN 0322	Rocket motors with hypergolic liquids with or without an expelling charge	1.2L
UN 0398	Rockets, liquid fueled with bursting charge	1.2J
UN 0397	Rockets, liquid fueled with bursting charge	1.1J
UN 0370	Warheads, rocket with burster or expelling charge	1.4D
UN 0371	Warheads, rocket with burster or expelling charge	1.4F
UN 0395	Rocket motors, liquid fueled	1.2J
UN 0396	Rocket motors, liquid fueled	1.3J
UN 0180	Rockets, with bursting charge	1.1F
UN 0295	Rockets, with bursting charge	1.2F
UN 0181	Rockets, with bursting charge	1.1E
UN 0182	Rockets, with bursting charge	1.2E
UN 0436	Rockets, with expelling charge	1.2C
UN 0437	Rockets, with expelling charge	1.3C
UN 0438	Rockets, with expelling charge	1.4C