HazMat Tool — substance information

Ammonium perchlorate

HMT May 2026

UN / ID: UN 0402
Hazard class: 1.1D
Packing group: —
ERG guide: —
Special provisions: SP 107
Source: 49 CFR §172 (2026/05)

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Ammonium perchlorate

Ammonium perchlorate ("AP") is an inorganic compound with the formula NH4ClO4. It is a colorless or white solid that is soluble in water. It is a powerful oxidizer and a major component of ammonium perchlorate composite propellant. Its instability has involved it in accidents such as the PEPCON disaster, and has been suspected as the cause of the Port of Shahid Rajaee explosion. Wikipedia

Substance Data

Source: PubChem (HSDB, 04.12.2019)

CAS-Number

7790-98-9

Flash Point

n/a

Boiling Point

n/a

Hazardous Materials Table

Source: 49 CFR §172 (2026/05)

(3) Hazard Class

1.1
Explosives

(4) Identification number

UN 0402

(5) Packing Group

n/a

(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)

×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.

107	The classification of the substance is expected to vary especially with the particle size and packaging but the border lines have not been experimentally determined; appropriate classifications should be verified following the test procedures in §173.57 and §173.58. Browse special provision 107

(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	Forbidden
(9B) Cargo aircraft only	Forbidden

(10) Vessel stowage

(10A) Location

Stowage category “04” means the material may be stowed “on deck” in closed cargo transport units or “under deck” in closed cargo transports 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
19E	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 0222	Ammonium nitrate, with more than 0.2 percent combustible substances, including any organic substance calculated as carbon, to the exclusion of any other added substance	1.1D
UN 1942	Ammonium nitrate, with not more than 0.2% combustible substances, including any organic substance calculated as carbon, to the exclusion of any other added substance	5.1
UN 3375	Ammonium nitrate emulsion or Ammonium nitrate suspension or Ammonium nitrate gel, intermediate for blasting explosives	5.1
UN 0004	Ammonium picrate, dry or wetted with less than 10 percent water, by mass	1.1D
UN 1310	Ammonium picrate, wetted with not less than 10 percent water, by mass	4.1
NA 0331	Ammonium nitrate-fuel oil mixture containing only prilled ammonium nitrate and fuel oil	1.5D
	Tetraethylammonium perchlorate (dry)	Forbidden
UN 2426	Ammonium nitrate, liquid (hot concentrated solution)	5.1
UN 2067	Ammonium nitrate based fertilizer	5.1
UN 2071	Ammonium nitrate based fertilizer	9
UN 1835	Tetramethylammonium hydroxide solution	8
UN 3423	Tetramethylammonium hydroxide, solid	8
UN 3424	Ammonium dinitro-o-cresolate solution	6.1
UN 1843	Ammonium dinitro-o-cresolate, solid	6.1
UN 2506	Ammonium hydrogen sulfate	8