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Triethylene glycol

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Triethylene glycol Basic information

Product Name:
Triethylene glycol
Synonyms:
  • TRIGLYCOL
  • TRIETHYLENE GYCOL
  • Triethylenglycol
  • TRIETHYLENE GLYCOL extrapure
  • TRIETHYLENE GLYCOL extrapure AR
  • 2,2'-(1,2-Ethanediylbis(oxy))bisethanol
  • 2,2’-(1,2-ethanediylbis(oxy))bis-ethano
  • 2,2’-(1,2-ethanediylbis(oxy))bisethanol
CAS:
112-27-6
MF:
C6H14O4
MW:
150.17
EINECS:
203-953-2
Product Categories:
  • Organics
  • Pyridines
  • Ethylene Glycol
  • Ethylene Glycols
  • Ethylene Glycols & Monofunctional Ethylene Glycols
Mol File:
112-27-6.mol
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Triethylene glycol Chemical Properties

Melting point:
−7 °C(lit.)
Boiling point:
125-127 °C0.1 mm Hg(lit.)
Density 
1.124 g/mL at 20 °C(lit.)
vapor density 
5.2 (vs air)
vapor pressure 
<0.01 mm Hg ( 20 °C)
refractive index 
n20/D 1.455(lit.)
Flash point:
165 °C
storage temp. 
Store below +30°C.
solubility 
H2O: 50 mg/mL at 20 °C, clear, colorless
form 
Viscous Liquid
pka
14.06±0.10(Predicted)
color 
Clear very slightly yellow
Odor
Very mild, sweet.
PH
5.5-7.0 (25℃, 50mg/mL in H2O)
explosive limit
0.9-9.2%(V)
Water Solubility 
SOLUBLE
λmax
λ: 260 nm Amax: 0.06
λ: 280 nm Amax: 0.03
Sensitive 
Hygroscopic
Merck 
14,9670
BRN 
969357
Stability:
Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKey
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
CAS DataBase Reference
112-27-6(CAS DataBase Reference)
NIST Chemistry Reference
Triethylene glycol(112-27-6)
EPA Substance Registry System
Triethylene glycol (112-27-6)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36
WGK Germany 
1
RTECS 
YE4550000
Autoignition Temperature
699 °F
TSCA 
Yes
HS Code 
29094919
Hazardous Substances Data
112-27-6(Hazardous Substances Data)
Toxicity
LD50 in mice, rats (g/kg): 21, 15-22 orally; 7.3-9.5, 11.7 i.v. (Stenger)

MSDS

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Triethylene glycol Usage And Synthesis

Chemical Properties

Triethylene glycol is a clear, colorless, viscous, stable liquid with a slightly sweetish odor. Soluble in water; immiscible with benzene, toluene, and gasoline. Combustible. Because it has two ether and two hydroxyl groups its chemical properties are closety related to ethers and primary alcohols. It is a good solvent for gums, resins, nitrocellulose, steam-set printing inks and wood stains. With a low vapor pressure and a high boiling point, its uses and properties are similar to those of ethylene glycol and diethylene glycol. Because it is an efficient hygroscopic agent it serves as a liquid desiccant for removing water from natural gas. It is also used in air conditioning systems designed to dehumidify air.

Uses

triethylene glycol is a solvent prepared from ethylene oxide and ethylene glycol.

Uses

In various plastics to increase pliability; in air disinfection.

Definition

ChEBI: A poly(ethylene glycol) that is octane-1,8-diol in which the carbon atoms at positions 3 and 6 have been replaced by oxygen atoms.

Production Methods

Triethylene glycol, like diethylene glycol, is produced commercially as a by-product of ethylene glycol production. Its formation is favored by a high ethylene oxide to water ratio.

General Description

Colorless liquid with a mild odor. Dense than water.

Reactivity Profile

2,2'-(Ethylenedioxy)diethanol is a ether-alcohol derivative. The ether being relatively unreactive. Flammable and/or toxic gases are generated by the combination of alcohols with alkali metals, nitrides, and strong reducing agents. They react with oxoacids and carboxylic acids to form esters plus water. Oxidizing agents convert alcohols to aldehydes or ketones. Alcohols exhibit both weak acid and weak base behavior. They may initiate the polymerization of isocyanates and epoxides. Reacts with strong oxidants. [Handling Chemicals Safely 1980. p. 932].

Health Hazard

Vapor and liquid are unlikely to cause harm.

Chemical Reactivity

Reactivity with Water No reaction; Reactivity with Common Materials: No reactions; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

Safety Profile

Poison by intravenous route. Mildly toxic to humans by ingestion. Experimental reproductive effects. An eye and skin irritant. Many glycol ether compounds have dangerous human reproductive effects. Combustible when exposed to heat or flame. Can react with oxidizing materials. Explosive in the form of vapor when exposed to heat, flame, or spark. To fight fire, use alcohol foam, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS and GLYCOL ETHERS.

Purification Methods

Dry the glycol with CaSO4 for 1 week, then it is repeatedly and very slowly fractionally distilled under a vacuum. Store it in a vacuum desiccator over P2O5. It is very hygroscopic. [Beilstein 1 IV 2400.]

Triethylene glycolSupplier

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