Diethylene glycol dimethyl ether

  • 2-Methoxyethyl ether
  • bis(2-Methoxyethyl) ether
Formula
(CH3OCH2CH2)2O
Structure
Description
Colorless liquid. Mild odor.
Uses
Solvent, anhydrous reaction medium for organo-metallic synthesis.

Registry Numbers and Inventories.
CAS
111-96-6
EC (EINECS/ELINCS)
203-924-4
EC Index Number
603-139-00-0
EC Class
Flammable; May form explosive peroxides; Toxic for reproduction Category 2
R 10 19 60 61
S 53 36/37/39 45
RTECS
KN3339000
RTECS class
Mutagen; Reproductive Effector
UN (DOT)
1993
Merck
13,3187
Beilstein/Gmelin
1736101
Beilstein Reference
4-01-00-02393
Swiss Giftliste 1
G-5956
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H14O3
Formula mass
134.18
Melting point, °C
-64
Boiling point, °C
162
Vapor pressure, mmHg
3 (25 C)
Vapor density (air=1)
4.62
Evaporization number
90 (diethyl ether = 1)
Critical temperature
344
Density
0.964 g/cm3 (0 C)
Solubility in water
Very soluble
Viscosity
1.17 cp (15 C)
Surface tension
23.13 g/s2 (80 C)
Refractive index
1.4097 (20 C)
Dielectric constant
7 (20 C)
Partition coefficient, pKow
-0.36
Heat of vaporization
38.0 kJ/mol
Heat of combustion
-3806 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid ingestion and inhalation. If peroxide formation is suspected, do not open or move container. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation.
Disposal code
1
Stability
Stable under normal temperatures and pressures. Prolonged exposure to air and sunlight may form unstable peroxides.
Incompatibilities
Strong oxidizing agents, strong acids and strong bases.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
51
Autoignition, °C
190
Upper exp. limit, %
17.4
Lower exp. limit, %
1.4
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. May form explosive peroxides. Combustible Liquid. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use agent most appropriate to extinguish fire. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
This chemical is combustible.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
2
 
 
Reactivity
1
 

Health.
Poison_Class
3
Exposure effects
May cause reproductive and fetal effects.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation
May cause respiratory tract irritation. Exposure produces central nervous system depression.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
1993
Response guide
Hazard class
3
Packing Group
I; II; III
 
USCG CHRIS Code
DGD
 
40 Glycol ethers
HS Code
2909 19 00