Basic information
Chinese name: triethylene glycol
English name: PCE Triethylene glycol
Chinese alias: triethylene glycol; Trisidine (ethylene glycol); Triethylene glycol
English alias :TEG; triethylene glycol anhydrous; 2, 2 - (ethylenedioxy diethanol); Trigol 95+ % (GLC); Triglycol; Trigol; 2, 2 '- [ethane - 1, 2 - diylbis (foxy)] diethanol; 2, 2 '- (Ethylenedioxy diethanol)
CAS number :112-27-6
Molecular formula :C6H14O4
Molecular weight :150.173
Physical property data
1. Properties: colorless, odorless and hygroscopic viscous liquid.
2. Boiling point (ºC,101.3kPa) : 285
3. Melting point (freezing point) (ºC) : -7
4. Relative density (g/mL,15/4ºC) : 1.1274
5. Relative density (g/mL,20/4ºC) : 1.1072
6. Relative vapor density (g/mL, air =1) : 5.2
7. Refractive index (n20D) : 1.455
8. Refractive index (20ºC) : 1.457815
9. Viscosity (mPa·s,20ºC) : 49.0
10. Viscosity (mPa·s,60ºC) : 8.5
11. Flash point (ºC, closed) : 165
12. Flash point (ºC, open) : 196
13. Ignition point (ºC) : 371
14. Heat of evaporation (KJ/mol,b.p.) : 71.452
15. Heat of combustion (KJ/mol) : 3563.4
16. Specific heat capacity (KJ/(kg·K),20ºC, constant pressure) : 2.20
17. Electrical conductivity (S/m,20ºC) : 8.4×10-8
18. Vapor pressure (kPa,25ºC) : 0.00018
19. Vapor pressure (kPa,162ºC) : 1.33
20. Vapor pressure (kPa,198ºC) : 6.67
21. Coefficient of expansion (K-1,55ºC) : 0.00071
22. Lower explosive limit (%,V/V) : 0.89
23. Upper explosion limit (%,V/V) : 9.20
24. Solubility: miscible with water, alcohol, propanol, benzene, etc. It can dissolve 40.6g carbon tetrachloride, 20.4g ether, 17.7g tetrachloroethylene and 33.0g toluene in 100mL triethylene glycol. In addition, triethylene glycol can dissolve o-dichlorobenzene, phenol, cellulose nitrate, cellulose acetate, dextrin, etc., but can not dissolve petroleum ether, resin and grease.
25. Relative density (25ºC, 4ºC) : 1.124
26. Refractive index (n25) at normal temperature: 1.455720
27. Critical temperature (ºC) : 506.85
28. Critical pressure (MPa) : 3.30
29. Solubility parameter (J·cm-3) 0.5:27.184
30. van der Waals area (cm2·mol-1) : 1.220×1010
31. van der Waals volume (cm3·mol-1) : 84.860
32. Gas phase standard heat of combustion (enthalpy)(kJ·mol-1) : -3636.8
33. The gas phase standard claims heat (enthalpy)(kJ·mol-1) : -725.0
34. Liquid phase standard heat of combustion (enthalpy)(kJ·mol-1) : -3557.6
35. The liquid phase standard claims heat (enthalpy)(kJ·mol-1) : -804.2
36. Liquid phase standard hot melt (J·mol-1·K-1) : 350.0
Storage method
1. Store in a cool, ventilated warehouse. Keep away from fire and heat. It should be stored separately from oxidizers and acids, and should not be mixed. Equipped with the corresponding variety and quantity of fire equipment. The storage area should be equipped with leak emergency treatment equipment and suitable containment materials.
2. It is very easy to absorb moisture. It should be sealed with dry, clean aluminum or a large bucket with aluminum spray on the inner wall. It can also be packed in a galvanized sealed iron bucket. 225kg per barrel. Products are stored in dry, ventilated places, moisture-proof, fire-proof, sun-proof, away from fire and heat sources.
Main use
1. As a solvent for nitrocellulose, various resins, gum, rocket fuel, plasticizer and diesel additives, can also be used in gas chromatography and organic synthesis. Triethylene glycol is mainly used as air dehumidifier solvent and aromatic hydrocarbon extractant. It is also used in printing inks, softeners, moisturizers and disinfectants for air conditioning systems. 2. Used as an excellent dehydrating agent for natural gas, oil field associated gas and carbon dioxide; Excellent organic solvent; Air fungicide; Polyvinyl chloride, polyvinyl acetate resin, glass fiber and asbestos pressed plate of triethylene glycol lipid plasticizer. It is also used in organic synthesis, such as the production of brake fluids with high boiling point and good low temperature performance
Safety information
Folding risk terms
R36/37/38:Irritating to eyes, respiratory system and skin. Irritates the eyes, respiratory system and skin. ;
Folding safety terms
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36:Wear suitable protective clothing. Wear appropriate protective clothing
System number
CAS number: 112-27-6
MDL number: MFCD00002880
EINECS number: 203-953-2
RTECS number: YE4550000
BRN number: 969357
PubChem number: 24890095
Toxicological data
1, acute toxicity: rat oral LD50:17000mg/kg; Guinea pig transoral LD50:7.9mL/kg
2, belongs to the class of microtoxicity, no irritation to the eyes and skin, long-term contact can make the skin soft.
Molecular structure data
1, molar refractive index: 36.40
2, molar volume (m3/mol) : 135.3
3. Isotropic specific volume (90.2K) : 343.6
4, surface tension (dyne/cm) : 41.6
5. Polarizability (10-24cm3) : 14.43
Ecological data
Slight hazard to water bodies
Property and stability
1. Avoid contact with oxides. It is a flammable substance. It is not corrosive to metals and does not act on most plastics and rubber. Has the chemical properties of alcohol and ether.
2. This product has low toxicity. The lower explosive limit in air is 3.2%. The maximum allowable concentration in the air is 10mg/m3≈1.5*10-6 (u/u), which is a low-toxicity, combustible and explosive organic matter, and should be placed in ventilated, fireproof and rainproof places. During transportation, it should be handled lightly, handled lightly, prevented from collision, kept away from the fire source, and operated according to the national regulations on the storage and transportation of chemical dangerous goods. This product leaks or contaminates the human body, can be washed with a lot of water, can be put out with water, foam, sand, etc.
3. It exists in tobacco leaves and smoke.
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