T

Triethylene glycol

IUPAC: 2-[2-(2-hydroxyethoxy)ethoxy]ethanol

C6H14O4 Solvents CAS 112-27-6
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Quick Reference
Formula / NotationC6H14O4
CAS Number112-27-6
Molecular Weight150.17
Melting Point24.3 °F (NTP, 1992)
Boiling Point545 °F at 760 mmHg (NTP, 1992)
Density1.125 at 68 °F (USCG, 1999) - Denser than water; will sink
Solubilitygreater than or equal to 100 mg/mL at 68 °F (NTP, 1992)
AppearanceTriethylene glycol is a colorless liquid with a mild odor. Dense than water. (USCG, 1999)
Also Known As2-[2-(2-hydroxyethoxy)ethoxy]ethanol; 112-27-6; Triglycol; 2,2'-(Ethane-1,2-diylbis(oxy))diethanol; 2,2'-Ethylenedioxydiethanol; Trigen; 2-[2-(2-Hydroxyethoxy)ethoxy]ethanol; Triethylenglykol; Triethyleneglycol; 1,2-Bis(2-hydroxyethoxy)ethane
CategorySolvents

What is Triethylene glycol?

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glycol is a poly(ethylene glycol) that is octane-1,8-diol in which the carbon atoms at positions 3 and 6 have been replaced by oxygen atoms. It has a role as a plasticiser. It is a primary alcohol, a diol and a poly(ethylene glycol).

Formula & Notation

C6H14O4

IUPAC Name: 2-[2-(2-hydroxyethoxy)ethoxy]ethanol

Other Names / Synonyms: 2-[2-(2-hydroxyethoxy)ethoxy]ethanol; 112-27-6; Triglycol; 2,2'-(Ethane-1,2-diylbis(oxy))diethanol; 2,2'-Ethylenedioxydiethanol; Trigen; 2-[2-(2-Hydroxyethoxy)ethoxy]ethanol; Triethylenglykol; Triethyleneglycol; 1,2-Bis(2-hydroxyethoxy)ethane

Properties & Characteristics

Appearance: Triethylene glycol is a colorless liquid with a mild odor. Dense than water. (USCG, 1999). Molecular formula: C6H14O4. Molecular weight: 150.17 g/mol. Boiling point: 545 °F at 760 mmHg (NTP, 1992). Melting point: 24.3 °F (NTP, 1992). Density: 1.125 at 68 °F (USCG, 1999) - Denser than water; will sink. Solubility: greater than or equal to 100 mg/mL at 68 °F (NTP, 1992). Vapor pressure: less than 0.001 mmHg at 68 °F ; 1 mmHg at 237 °F (NTP, 1992). LogP: -1.6.

Physical Data

PropertyValue
Melting Point24.3 °F (NTP, 1992)
Boiling Point545 °F at 760 mmHg (NTP, 1992)
Density1.125 at 68 °F (USCG, 1999) - Denser than water; will sink
Molecular Weight150.17
Solubilitygreater than or equal to 100 mg/mL at 68 °F (NTP, 1992)
AppearanceTriethylene glycol is a colorless liquid with a mild odor. Dense than water. (USCG, 1999)

Uses & Applications

Used as a reaction solvent in organic synthesis, extraction solvent, cleaning agent, or in pharmaceutical manufacture.

Safety Information

Flammable solvent. Keep away from heat, sparks, and open flame. Use in well-ventilated area or fume hood. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Triethylene glycol
Formula C6H14O4
CAS Number 112-27-6
Molecular Weight 150.17
Category Solvents
Synonyms 2-[2-(2-hydroxyethoxy)ethoxy]ethanol; 112-27-6; Triglycol; 2,2'-(Ethane-1,2-diylbis(oxy))diethanol; 2,2'-Ethylenedioxydiethanol; Trigen; 2-[2-(2-Hydroxyethoxy)ethoxy]ethanol; Triethylenglykol; Triethyleneglycol; 1,2-Bis(2-hydroxyethoxy)ethane

Frequently Asked Questions

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. It has a role as a plasticiser. It is a primary alcohol, a diol and a poly(ethylene glycol).

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.