Triethylene glycol CAS# 112-27-6
Excellent Solvent Properties ：Triethylene glycol effectively dissolves gums, resins, nitrocellulose, steam-set printing inks, and wood stains.
High Thermal and Chemical Stability ：It has a low vapor pressure, high boiling point, and chemical characteristics similar to ethylene glycol and diethylene glycol, ensuring stable performance.
Hygroscopic and Dehydrating Agent ： Serves as an efficient liquid desiccant for removing water from natural gas and dehumidifying air in HVAC systems.
Safe and Versatile Liquid ： Clear, colorless, and relatively non-volatile, making it suitable for various industrial and commercial applications.
Triethylene glycol is a clear, colorless, viscous, and stable liquid with a slightly sweet odor. It is soluble in water but immiscible with benzene, toluene, and gasoline, and is combustible. Containing two ether groups and two hydroxyl groups, its chemical properties are closely related to those of ethers and primary alcohols. It serves as an excellent solvent for gums, resins, nitrocellulose, steam-set printing inks, and wood stains. With its low vapor pressure and high boiling point, its applications and properties are similar to ethylene glycol and diethylene glycol. Its strong hygroscopic nature makes it an effective liquid desiccant for removing water from natural gas, and it is also used in air conditioning systems for air dehumidification.
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 |
pKa | 14.06±0.10(Predicted) |
form | Viscous Liquid |
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 |
Merck | 14,9670 |
BRN | 969357 |
Dielectric constant | 2.4（25℃） |
Stability: | Stable. Combustible. Incompatible with strong oxidizing agents. |
InChIKey | ZIBGPFATKBEMQZ-UHFFFAOYSA-N |
LogP | -1.75 at 25℃ |
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) |
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) |
Product Usage
Triethylene glycol, produced from ethylene oxide and ethylene glycol, has a wide range of applications.
It can be used to prepare fatty acid gelators, which are applied to gel various edible and vegetable oils.
It serves as a solvent for the synthesis of superparamagnetic iron oxide nanoparticles, useful for in situ protein purification.
It acts as an absorbent in subsea natural gas dehydration processes.
Triethylene glycol is also employed as a plasticizer, an additive in hydraulic and brake fluids, and as a disinfectant. It functions as an active component in certain pigments, printing dyes, inks, and pastes. Additionally, it is widely used as a liquid desiccant for removing water from natural gas, carbon dioxide, hydrogen sulfide, and in air conditioning systems. It plays an important role in antifreeze and de-icing products, cleaning and personal care products, as well as lubricants and greases.
