HazMat Tool — substance information

Ethyl methyl ether

HMT 15 June 2026
Reference only — HMT snapshot for inspection and audit support; not a shipping paper, placard mandate, or CVI record. Use Print / PDF below for field notes.
UN / ID
UN 1039
Hazard class
2.1
Packing group
ERG guide
ERG 115
Special provisions
Source
49 CFR §172 (15 June 2026)

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Ethyl methyl ether


Methoxyethane, also known as ethyl methyl ether, is a colorless gaseous ether with the formula CH3OCH2CH3. Unlike the related dimethyl ether and diethyl ether, which are widely used and studied, this mixed alkyl ether has no current applications. It is a structural isomer of isopropyl alcohol. Its utility as an anesthetic and solvent have been investigated Wikipedia

Substance Data

Source: PubChem (HSDB, 04.12.2019)

CAS-Number

540-67-0

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 115

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard Class

2.1
Flammable gases

(4) Identification number Help

UN 1039

(5) Packing Group Help

n/a

(6) Labels Help

Flammable gases (2.1) Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102) Help

(8) Packing Authorizations (§173.***) Help

(8A) ExceptionsNone
(8B) Non-bulk201see 49 CFR §173.201
(8C) Bulk314, 315see 49 CFR §173.314, 315

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only150 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

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.

Prohibited Must not be loaded, transported, or stored together in the same vehicle or facility.
Permitted May be loaded, transported, or stored together.
Restricted May be loaded, transported, or stored together only with restrictions.