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Triglycol (Triethylene glycol), TEG, or triglycol is a colorless odorless viscous liquid with molecular formula HOCH2CH2OCH2CH2OCH2CH2OH.
Triglycol (Triethylene glycol) is used as a plasticizer for vinyl polymers.
Triglycol (Triethylene glycol) is also used in air sanitizer products, such as "Oust" or "Clean and Pure".
CAS: 112-27-6
MF: C6H14O4
MW: 150.17
EINECS: 203-953-2
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
When aerosolized Triglycol (Triethylene glycol) acts as a disinfectant.
Glycols are also used as liquid desiccants for natural gas and in air conditioning systems.
Triglycol (Triethylene glycol) is used as an additive for hydraulic fluids and brake fluids, and as a base for "smoke machine" fluid in the entertainment industry.
Triglycol (Triethylene glycol) is a poly(ethylene glycol) that is octane-1,8-diol in which the carbon atoms at positions 3 and 6 have been replaced by oxygen atoms.
Triglycol (Triethylene glycol) has a role as a plasticiser.
Triglycol (Triethylene glycol) is a poly(ethylene glycol), a diol and a primary alcohol.
Triglycol (Triethylene glycol) is a colorless liquid with a mild odor and is denser than water. Triglycol (Triethylene glycol) is a member of a series of dihydroxyalcohols.
Triglycol (Triethylene glycol)'s primary applications are derived from its ability to absorb moisture.
Triglycol (Triethylene glycol) is utilized as a dehydrating agent in natural gas pipelines to eliminate water from the gas before reusing it in the system.
Triglycol (Triethylene glycol) also has mild disinfectant qualities and, when volatised, is used as an air disinfectant for virus and bacteria control.
Triglycol (Triethylene glycol) also known as TEG is a colourless liquid that is well known for its hygroscopic properties and its ability to dehumidify fluids.
Triglycol (Triethylene glycol) is a very versatile product with low volatility, a low boiling point, stable nature and mild odour, as well as a possessing mild disinfectant quality.
Triglycol (Triethylene glycol) is an organic compound that belongs to the glycols and is used, among other things, as a humectant and solvent.
Triglycol (Triethylene glycol) can be produced by the ethoxylation of the structurally similar diethylene glycol.
Triglycol (Triethylene glycol) is usually obtained as a by-product of the large-scale production of ethylene glycol.
Due to its hygroscopic properties, Triglycol (Triethylene glycol) is used as a fog liquid, as a humectant for tobacco and printing inks, and for drying and dehumidifying natural gas.
As a high-boiling solvent, Triglycol (Triethylene glycol) is also used in processes in the chemical industry that take place at high temperatures.
Triglycol (Triethylene glycol) has an antibacterial effect and can be used, for example, to disinfect the air in public buildings such as hospitals.
As an additive to hydraulic and brake fluids, triethylene glycol is also important for machine and vehicle construction.
Triglycol (Triethylene glycol) is also an important intermediate for the industrial production of other organic compounds, which is used, among other things, for the production of polyester resins.
Triglycol (Triethylene glycol) might not be a household name, but in the industries that rely on it, it’s indispensable.
Known for its high boiling point, hygroscopic properties, and ability to absorb water, TEG plays a critical role in chemical manufacturing and natural gas dehydration.
Without Triglycol (Triethylene glycol), pipelines would be less efficient and chemical processes would be harder to manage.
Triglycol (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.)
Fp: 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
PH: 5.5-7.0 (25℃, 50mg/mL in H2O)
Odor: Very mild, sweet.
explosive limit: 0.9-9.2%(V)
Water Solubility: SOLUBLE
Sensitive: Hygroscopic
λmax λ: 260 nm Amax: 0.06
λ: 280 nm Amax: 0.03
Merck: 14,9670
BRN: 969357
Dielectric constant: 2.4（25℃）
Stability: Stable. Combustible. Incompatible with strong oxidizing agents.
Cosmetics Ingredients Functions: FRAGRANCE
PERFUMING
VISCOSITY CONTROLLING
InChI: 1S/C6H14O4/c7-1-3-9-5-6-10-4-2-8/h7-8H,1-6H2
InChIKey: ZIBGPFATKBEMQZ-UHFFFAOYSA-N
LogP: -1.75 at 25℃
Surface tension: 44.71 mN/m at 303.15K
CAS DataBase Reference: 112-27-6(CAS DataBase Reference)
NIST Chemistry Reference: Triglycol (Triethylene glycol) (112-27-6)
EPA Substance Registry System: Triglycol (Triethylene glycol) (112-27-6)
Triglycol (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 Triglycol (Triethylene glycol) has two ether and two hydroxyl groups its chemical properties are closety related to ethers and primary alcohols.
Triglycol (Triethylene glycol) 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 Triglycol (Triethylene glycol) is an efficient hygroscopic agent it serves as a liquid desiccant for removing water from natural gas.
Triglycol (Triethylene glycol) is also used in air conditioning systems designed to dehumidify air.
Triglycol (Triethylene glycol) is a member of a homologous series of polyethylene glycols.
Triglycol (Triethylene glycol) is a colorless, odorless and stable liquid with high viscosity and a high boiling point.
Apart from Triglycol (Triethylene glycol)'s use as a raw material in the manufacture and synthesis of other products, Triglycol (Triethylene glycol) is known for its hygroscopic quality and its ability to dehumidify fluids.
This liquid is miscible with water, and at standard atmospheric pressure (101.325 kPa) has a boiling point of 286.5 °C and a freezing point of −7 °C.
Triglycol (Triethylene glycol) is also soluble in ethanol, acetone, acetic acid, glycerine, pyridine, aldehydes; slightly soluble in diethyl ether; and insoluble in oil, fat and most hydrocarbons.
Uses
Triglycol (Triethylene glycol) is a solvent prepared from ethylene oxide and ethylene glycol.
Triglycol (Triethylene glycol) can be used:
To prepare fatty acid gelators, which are used to gelate various edible and vegetable oils.
As a solvent to prepare superparamagnetic iron oxide nanoparticles for in situ protein purification.
As an absorbent agent in the subsea natural gas dehydration process.
Triglycol (Triethylene glycol) is used as a plasticizer, as an additive for hydraulic fluids and brake fluids, and as a disinfectant.
Triglycol (Triethylene glycol) is an active component of certain pigments, printing dyes, inks and paste.
Triglycol (Triethylene glycol) finds application as a liquid desiccant and used in the dehydration of natural gas, carbon dioxide, hydrogen sulfide and air conditioning systems.
Triglycol (Triethylene glycol) plays as an important role in anti-freeze and de-icing products, cleaning and furnishing care products, lubricant and greases.
Triglycol (Triethylene glycol) is used by the oil and gas industry to "dehydrate" natural gas.
Triglycol (Triethylene glycol) may also be used to dehydrate other gases, including CO2, H2S, and other oxygenated gases.
Triglycol (Triethylene glycol) is necessary to dry natural gas to a certain point, as humidity in natural gas can cause pipelines to freeze, and create other problems for end users of the natural gas.
Triglycol (Triethylene glycol) is placed into contact with natural gas, and strips the water out of the gas.
Triglycol (Triethylene glycol) is heated to a high temperature and put through a condensing system, which removes the water as waste and reclaims the TEG for continuous reuse within the system.
The waste Triglycol (Triethylene glycol) produced by this process has been found to contain enough benzene to be classified as hazardous waste (benzene concentration greater than 0.5 mg/L).
Triglycol (Triethylene glycol) is well established as a relatively mild disinfectant toward a variety of bacteria, influenza A viruses and spores of Penicillium notatum fungi.
However, Triglycol (Triethylene glycol)'s exceptionally low toxicity, broad materials compatibility, and low odor combined with its antimicrobial properties indicates that it approaches the ideal for air disinfection purposes in occupied spaces.
Much of the scientific work with Triglycol (Triethylene glycol) was done in the 1940s and 1950s, however that work has ably demonstrated the antimicrobial activity against airborne, solution suspension, and surface bound microbes.
The ability of Triglycol (Triethylene glycol) to inactivate Streptococcus pneumoniae (original citation: pneumococcus Type I), Streptococcus pyogenes (original citation: Beta hemolytic streptococcus group A) and Influenza A virus in the air was first reported in 1943.
Since the first report the following microorganisms have been reported in the literature to be inactivated in the air: Penicillium notatum spores, Chlamydophila psittaci (original citation: meningopneumonitis virus strain Cal 10 and psittacosis virus strain 6BC), Group C streptococcus, type 1 pneumococcus, Staphylococcus albus, Escherichia coli, and Serratia marcescens Bizio (ATCC 274).
Solutions of Triglycol (Triethylene glycol) are known to be antimicrobial toward suspensions of Penicillium notatum spores, Streptococcus pyogenes (original citation: Beta hemolytic streptococcus Group A), Streptococcus pneumoniae (original citation: pneumococcus Type I), Streptococcus viridans, and Mycobacterium bovis (original citation: tubercle bacilli Ravenel bovine-type).
Further, the inactivation of H1N1 influenza A virus on surfaces has been demonstrated.
The latter investigation suggests that Triglycol (Triethylene glycol) may prove to be a potent weapon against future influenza epidemics and pandemics.
However, at least some viruses, including Pseudomonas phage phi6 become more infectious when treated with Triglycol (Triethylene glycol).
Production Methods
Triglycol (Triethylene glycol), like diethylene glycol, is produced commercially as a by-product of ethylene glycol production.
Triglycol (Triethylene glycol)'s formation is favored by a high ethylene oxide to water ratio.
Reactivity Profile
Triglycol (Triethylene glycol) 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.
