Triethylene glycol dimethyl ether

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Structural formula
Structure of triglyme
General
Surname Triethylene glycol dimethyl ether
other names
  • 1,2-bis (2-methoxyethoxy) ethane
  • 2,5,8,11-tetraoxadodecane
  • TEGDME
  • Dimethyl triglycol
  • Triglyme
Molecular formula C 8 H 18 O 4
Brief description

colorless, almost odorless, hygroscopic liquid

External identifiers / databases
CAS number 112-49-2
EC number 203-977-3
ECHA InfoCard 100.003.616
PubChem 8189
ChemSpider 13835222
DrugBank DB02078
Wikidata Q2453066
properties
Molar mass 178.23 g mol −1
Physical state

liquid

density

0.98 g cm −3

Melting point

−46 ° C

boiling point

216 ° C

Vapor pressure

2.7 Pa (20 ° C)

solubility
Refractive index

1.423 (20 ° C)

safety instructions
GHS hazard labeling from  Regulation (EC) No. 1272/2008 (CLP) , expanded if necessary
08 - Dangerous to health 07 - Warning

danger

H and P phrases H: 319-360Df
EUH: 019
P: 201-280-305 + 351 + 338-308 + 313
Authorization procedure under REACH

of particular concern : toxic for reproduction ( CMR )

Toxicological data

5390 mg kg −1 ( LD 50 ,  rat ,  oral )

As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Triethylene glycol dimethyl ether is a chemical compound from the group of glycol ethers .

properties

Triethylene glycol dimethyl ether has a viscosity of 3.7 m · Pas at 20 ° C.

use

Triethylene glycol dimethyl ether is used as an inert solvent for Grignard , reduction and alkylation reactions (for example for the production of Teflon and fluoropolymers and sodium borohydride ). It is still part of brake and hydraulic fluids.

Related links

Individual evidence

  1. ↑ a b c d e f g h Entry on triethylene glycol dimethyl ether in the GESTIS substance database of the IFA , accessed on January 10, 2017(JavaScript required) .
  2. ↑ a b c Data sheet triethylene glycol dimethyl ether (PDF) from Merck , accessed on February 23, 2010.
  3. ↑ Triglyme (Ferro)
  4. ↑ Entry on 1,2-bis (2-methoxyethoxy) ethane in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
  5. ↑ Entry in the SVHC list of the European Chemicals Agency , accessed on July 15, 2014.
  6. ↑ glymes.com: Triglyme ( Memento of March 8, 2010 in the Internet Archive )