HazMat Tool — substance information

n-Propyl nitrate

HMT 15 June 2026

UN / ID: UN 1865
Hazard class: 3
Packing group: II
ERG guide: ERG 131
Special provisions: SP IB9
Source: 49 CFR §172 (15 June 2026)

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n-Propyl nitrate

n-Propyl chloride (also 1-propyl chloride or 1-chloropropane) is a colorless, flammable chemical compound. It has the chemical formula C3H7Cl or CH3CH2CH2Cl and is prepared by reacting n-propyl alcohol with phosphorus trichloride in the presence of a zinc chloride catalyst Wikipedia

Substance Data

Source: PubChem

CAS-Number

627-13-4

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 131

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard Class

3
Flammable liquids

(4) Identification number

UN 1865

(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.

IB9	see 49 CFR §172.102

(8) Packing Authorizations (§173.***)

(8A) Exceptions	150	see 49 CFR §173.150
(8B) Non-bulk	202	see 49 CFR §173.202
(8C) Bulk	None

(9) Quantity Limits

(9A) Passenger aircraft/rail	5 L
(9B) Cargo aircraft only	60 L

(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

44	see 49 CFR §176.84
89	see 49 CFR §176.84
90	see 49 CFR §176.84
100	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 3138	Ethylene, acetylene and propylene in mixture, refrigerated liquid with at least 71.5 percent ethylene with not more than 22.5 percent acetylene and not more than 6 percent propylene	2.1
UN 2983	Ethylene oxide and propylene oxide mixtures, with not more than 30 percent ethylene oxide	3
	Diisopropylbenzene hydroperoxide, with more than 72 percent in solution	Forbidden
	Isopropylcumyl hydroperoxide, with more than 72 percent in solution	Forbidden
UN 1858	Hexafluoropropylene compressed or Refrigerant gas R 1216	2.2
UN 1274	n-Propanol or Propyl alcohol, normal	3
UN 1219	Isopropanol or Isopropyl alcohol	3
	3-Azido-1,2-Propylene glycol dinitrate	Forbidden
UN 2615	Ethyl propyl ether	3
UN 1793	Isopropyl acid phosphate	8
UN 2612	Methyl propyl ether	3
UN 1249	Methyl propyl ketone	3
UN 2384	Di-n-propyl ether	3
UN 2490	Dichloroisopropyl ether	6.1
UN 1159	Diisopropyl ether	3