HazMat Tool — substance information

Dichlorodimethyl ether, symmetrical

HMT May 2026
UN / ID
UN 2249
Hazard class
6.1
Packing group
I
ERG guide
ERG 131
Special provisions
Source
49 CFR §172 (2026/05)

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Dichlorodimethyl ether, symmetrical

Substance Data

Source: PubChem (HSDB, 04.12.2019)

CAS-Number

542-88-1

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 131

Hazardous Materials Table

Source: 49 CFR §172 (2026/05)

(3) Hazard Class

6.1
Poisonous Material

(4) Identification number Help

UN 2249

(5) Packing Group Help

I

(6) Labels Help

Poisonous liquids PG I Zone A (6.1) Flammable liquids (3)

(7) Special Provisions (§172.102) Help

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

(8A) ExceptionsNone
(8B) Non-bulk201see 49 CFR §173.201
(8C) Bulk243see 49 CFR §173.243

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft onlyForbidden

(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.

Scope & sources (important)Click to show CFR references

This check evaluates segregation per 49 CFR §177.848. Additional loading/unloading and handling requirements may still apply; see 49 CFR §177 Subpart B (Loading and Unloading):

  • §177.834 - General requirements
  • §177.835 - Class 1 materials
  • §177.837 - Class 3 materials
  • §177.838 - Class 4 (flammable solid) materials, Class 5 (oxidizing) materials, and Division 4.2 (pyroforic liquid) materials
  • §177.839 - Class 8 (corrosive) materials
  • §177.840 - Class 2 (gases) materials
  • §177.841 - Division 6.1 and Division 2.3 materials
  • §177.842 - Class 7 (radioactive) material
  • §177.843 - Contamination of vehicles

Similar substances

UN / IDProper shipping nameHazard class
UN 3508Capacitor, asymmetric with an energy storage capacity greater than 0.3 Wh9
UN 1163Dimethylhydrazine, unsymmetrical6.1
UN 2382Dimethylhydrazine, symmetrical6.1