HazMat Tool — substance information Reference only — not a shipping paper, placard mandate, or CVI record.

Methyl bromide

HMT 15 June 2026

UN / ID: UN 1062
Hazard class: 2.3
Packing group: —
ERG guide: ERG 123
Special provisions: SP 3, SP B14, SP N86, SP T50
Source: 49 CFR §172 (15 June 2026)

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Methyl bromide

Bromomethane, commonly known as methyl bromide, is an organobromine compound with formula CH3Br. This colorless, odorless, nonflammable gas is produced both industrially and biologically. It is a recognized ozone-depleting chemical. According to the IPCC Fifth Assessment Report, it has a global warming potential of 2 Wikipedia

Substance Data

Source: PubChem (HSDB, 21.10.2026)

CAS-Number

74-83-9

Flash Point

194 ° C

Boiling Point

3.4 ° C

Emergency Response Guide No. 123

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard class

2.3
Poisonous gas

(4) Identification number

UN 1062

(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.

3	This material is poisonous by inhalation (see § 171.8 of this subchapter) in Hazard Zone C (see § 173.116(a) of this subchapter), and must be described as an inhalation hazard under the provisions of this subchapter. Browse special provision 3
B14	Each bulk packaging, except a tank car or a multi-unit-tank car tank, must be insulated with an insulating material so that the overall thermal conductance at 15.5 °C (60 °F) is no more than 1.5333 kilojoules per hour per square meter per degree Celsius (0.075 Btu per hour per square foot per degree Fahrenheit) temperature differential. Insulating materials must not promote corrosion to steel when wet. Browse special provision B14
N86	UN pressure receptacles made of aluminum alloy are not authorized. Browse special provision N86
T50	When portable tank instruction T50 is indicated in Column (7) of the § 172.101 Hazardous Materials Table, the applicable liquefied compressed gas and chemical under pressure descriptions are authorized to be transported in portable tanks in accordance with the requirements of § 173.313 of this subchapter. Browse special provision T50

(8) Packing Authorizations (§173.***)

(8A) Exceptions	None
(8B) Non-bulk	193	see 49 CFR §173.193
(8C) Bulk	314, 315	see 49 CFR §173.314, 315

(9) Quantity Limits

(9A) Passenger aircraft/rail	Forbidden
(9B) Cargo aircraft only	Forbidden

(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

40	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.

Hinweis: In der Kompatibilitätstabelle sind Stoffe der Gefahrenklasse 2.3 abhängig der Einstufung der inhalativen Giftigkeit zu berücksichtigen (Gefahrenzone A). Siehe Sonderbestimmung 1 sowie PHMSA Interpretation #09-0252.

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 1647	Methyl bromide and ethylene dibromide mixtures, liquid	6.1
	Methyl bromide and chloropicrin mixtures with more than 2 percent chloropicrin, see Chloropicrin and methyl bromide mixtures
UN 1581	Chloropicrin and methyl bromide mixtures	2.3
UN 1770	Diphenylmethyl bromide	8
UN 1928	Methyl magnesium bromide, in ethyl ether	4.3
UN 1725	Aluminum bromide, anhydrous	8
UN 2580	Aluminum bromide, solution	8
UN 1048	Hydrogen bromide, anhydrous	2.3
UN 2576	Phosphorus oxybromide, molten	8
UN 1085	Vinyl bromide, stabilized	2.1
UN 1701	Xylyl bromide, liquid	6.1
UN 3417	Xylyl bromide, solid	6.1
UN 2692	Boron tribromide	8
UN 2516	Carbon tetrabromide	6.1
UN 1605	Ethylene dibromide	6.1