1,2-Dimethoxyethane

  • Ethylene glycol dimethyl ether
  • Dimethyl cellosolve
Formula
CH3OCH2CH2OCH3
Structure
Description
A liquid with a sharp odor.
Uses
Solvent to facilitate formation of alkali metal-hydrocarbon adducts, in reformatsky reaction with methyl gamma-bromocrotonate.

Registry Numbers and Inventories.
CAS
110-71-4
EC (EINECS/ELINCS)
203-794-9
EC Index Number
603-031-00-3
EC Class
Flammable; May form explosive peroxides; Harmful
R 11 19 20
RTECS
KI1451000
RTECS class
Reproductive Effector
UN (DOT)
2252
Merck
13,3251
Beilstein/Gmelin
1209237
Beilstein Reference
4-01-00-02376
Swiss Giftliste 1
G-6774
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C4H10O2
Formula mass
90.12
Melting point, °C
-69
Boiling point, °C
85
Vapor pressure, mmHg
48 (25 C)
Vapor density (air=1)
3.1
Saturation Concentration
200 g/m3 (20 C)
Critical temperature
270
Critical pressure
39.08
Density
1.113 g/cm3
Solubility in water
Soluble
Viscosity
0.47 cp (15 C)
Surface tension
17.71 g/s2 (80 C)
Refractive index
1.38
Partition coefficient, pKow
-0.21
Heat of vaporization
30.95 kJ/mol
Heat of combustion
-2624 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
Handling
Wash thoroughly after handling. Ground and bond containers when transferring material. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. 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 protective 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
Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Provide ventilation.
Disposal code
1
Stability
Stable under normal temperatures and pressures. Prolonged exposure to air and sunlight may form unstable peroxides.
Incompatibilities
Lithium aluminum hydride, oxidizing agents, strong acids.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
-6
Autoignition, °C
200
Upper exp. limit, %
10.4
Lower exp. limit, %
1.6
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Can release vapors that form explosive mixtures at temperatures above the flashpoint. Use water spray to keep fire-exposed containers cool. May form explosive peroxides. To extinguish fire use water fog, dry chemical, carbon dioxide or alcohol type foam.
Fire potential
Dangerous, when exposed to heat or flame; can react vigorously with oxidizing materials flammable, dangerous fire risk
Hazards
Containers may explode in fires.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
2
 
 
Reactivity
0
 

Health.
Poison_Class
2
Exposure effects
Prolonged or repeated exposure may cause adverse reproductive effects.
   Ingestion
May cause irritation of the digestive tract.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
2252
Response guide
Hazard class
3
Packing Group
II
 
USCG CHRIS Code
EGD
 
40 Glycol ethers
HS Code
2909 19 00
 
Std. Transport #
4910529