HazMat Tool — substance information

Ammonium picrate, wetted with not less than 10 percent water, by mass

HMT 15 June 2026

UN / ID: UN 1310
Hazard class: 4.1
Packing group: I
ERG guide: ERG 113
Special provisions: SP 23, SP A2, SP N41, SP W31
Source: 49 CFR §172 (15 June 2026)

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Ammonium picrate, wetted with not less than 10 percent water, by mass

Dunnite, also known as Explosive D or systematically as ammonium picrate, is an explosive developed in 1906 by US Army Major Beverly W. Dunn, who later served as chief inspector of the Bureau of Transportation Explosives. Ammonium picrate is a salt formed by reacting picric acid and ammonia. It is chemically related to the more stable explosive trinitrotoluene (TNT) Wikipedia

Substance Data

Source: PubChem (HSDB, 04.12.2019)

CAS-Number

131-74-8

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 113

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard Class

4.1
Flammable solids

(4) Identification number

UN 1310

(5) Packing Group

(6) Labels

(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.

23	This material may be transported under the provisions of Division 4.1 only if it is so packed that the percentage of diluent will not fall below that stated in the shipping description at any time during transport. Quantities of not more than 500 g per package with not less than 10 percent water by mass may also be classed in Division 4.1, provided a negative test result is obtained when tested in accordance with test series 6(c) of the UN Manual of Tests and Criteria (IBR, see § 171.7 of this subchapter). Browse special provision 23
A2	Single packagings are not permitted on aircraft. Browse special provision A2
N41	Metal construction materials are not authorized for any part of a packaging which is normally in contact with the hazardous material. Browse special provision N41
W31	Non-bulk packagings must be hermetically sealed. Browse special provision W31

(8) Packing Authorizations (§173.***)

(8A) Exceptions	None
(8B) Non-bulk	211	see 49 CFR §173.211
(8C) Bulk	None

(9) Quantity Limits

(9A) Passenger aircraft/rail	0.5 kg
(9B) Cargo aircraft only	0.5 kg

(10) Vessel stowage

(10A) Location

Stowage category “D” means the material must be stowed “on deck only” on a cargo vessel or on a passenger vessel carrying a number of passengers limited to not more than the larger of 25 passengers or one passenger per each 3 m of overall vessel length, but the material is prohibited on a passenger vessel in which the limiting number of passengers is exceeded.

Source: 49 CFR §172.101(k)

(10B) Other

28	see 49 CFR §176.84
36	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
NA 0331	Ammonium nitrate-fuel oil mixture containing only prilled ammonium nitrate and fuel oil	1.5D
UN 0004	Ammonium picrate, dry or wetted with less than 10 percent water, by mass	1.1D
UN 2426	Ammonium nitrate, liquid (hot concentrated solution)	5.1
UN 2071	Ammonium nitrate based fertilizer	9
UN 2067	Ammonium nitrate based fertilizer	5.1
	Tetraethylammonium perchlorate (dry)	Forbidden
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
UN 1727	Ammonium hydrogendifluoride, solid	8