Triethylene glycol dimethyl ether

  • 1,2-Bis(2-methoxyethoxy)ethane
  • Triglyme
Formula
CH3O(CH2CH2O)3CH3
Structure
Description
Clear colorless liquid with a mild ethereal odor.
Uses
Often used as a solvent.

Registry Numbers and Inventories.
CAS
112-49-2
EC (EINECS/ELINCS)
203-977-3
EC Index Number
603-176-00-2
EC Class
toxic for reproduction
R 62 63
RTECS
XF0665000
RTECS class
Reproductive Effector
UN (DOT)
2924
Merck
12,9820
Beilstein/Gmelin
1700630
Beilstein Reference
4-01-00-02401
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H18O4
Formula mass
178.23
Melting point, °C
-40
Boiling point, °C
216
Vapor pressure, mmHg
0.2 (25 C)
Density
0.990 g/cm3 (20 C)
Solubility in water
Insoluble
Viscosity
1.95 cp (25 C)
Surface tension
26.21 g/s2 (80 C)
Refractive index
1.4233 (20 C)
Partition coefficient, pKow
-1.16
Heat of vaporization
43.4 kJ/mol

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter.
Small spills/leaks
If you should spill this chemical, use absorbent paper to pick up all liquid spill material. Seal the absorbent paper, as well as any of your clothing which may be contaminated, in a vapor-tight plastic bag for eventual disposal. Wash any surfaces you may have contaminated with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.
Disposal code
1
Stability
No data.
Incompatibilities
Sensitive to shock Incompatible with strong oxidizers Incompatible with strong acids May react with peroxides, oxygen, nitric acid and sulfuric acid.

Fire.
Flash Point,°C
110
Autoignition, °C
195
Upper exp. limit, %
11.4
Lower exp. limit, %
1
Fire fighting
Fires involving this material can be controlled with a carbon dioxide, dry chemical or Halon extinguisher. A water spray may also be used.
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 will produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
   Ingestion
May cause toxic effects.
   Inhalation
Vapors may cause dizziness or suffocation. May cause toxic effects.
   Skin
Contact with substance may cause severe burns.
   Eyes
See Skin.

First aid
 
   Ingestion
DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician.
   Inhalation
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
   Skin
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
   Eyes
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Transport.
UN number
2924
Response guide
Hazard class
3
Packing Group
I; II; III
 
40. Glycol ethers
HS Code
2909 19 00