Hangzhou Wencheng Chemical Biotech Co., Ltd.

99.5% Triethylene glycol
99.5% Triethylene glycol
99.5% Triethylene glycol

99.5% Triethylene glycol

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  • Category

    Polyol Series

  • Describe

    Triethylene glycol (TEG) is a colorless, odorless, viscous polyol liquid with excellent hygroscopicity and solubility. It is widely used in natural gas dehydration, air dehumidification, solvents, plastic plasticizers and pharmaceutical industries.

  • Cas No.

    112-27-6

  • Purity

    99.5%

  • Synonym(s)

    TEG

Physical and chemical properties

  • 1. Chemical Identity
    • Chemical Name: Triethylene glycol
    • IUPAC Name: 2-[2-(2-Hydroxyethoxy)ethoxy]ethan-1-ol
    • Synonyms: TEG, Triglycol, 2,2'-Ethylenedioxydiethanol
    • CAS Number: 112-27-6
    • EC Number: 203-953-2
    • Molecular Formula: C6​H14​O4​
    • Molecular Weight: 150.17 g/mol
  • 2. Physical Properties
    • Appearance: Clear, colorless, viscous, hygroscopic liquid.
    • Odor: Practically odorless.
    • Taste: Sweetish taste.
    • Melting Point: -7 °C (19 °F)
    • Boiling Point: 285-288 °C (545-550 °F) at 1013 hPa
    • Density: 1.124 g/cm³ at 20 °C
    • Solubility:
    • In Water: Miscible (soluble in all proportions).
    • In Organic Solvents: Soluble in alcohol, acetone, and acetic acid. Insoluble in ether, oils, and most hydrocarbons.
    • Vapor Pressure: <0.01 hPa at 20 °C
    • Vapor Density: 5.18 (Air = 1)
    • Viscosity: 47.8 mPa·s at 20 °C
  • 3. Chemical Properties and Stability
    • Stability: Stable under normal conditions. Hygroscopic (absorbs moisture from the air).
    • Incompatibilities: Incompatible with strong oxidizing agents (e.g., potassium permanganate, perchloric acid), strong acids, and strong bases.
    • Hazardous Decomposition Products: Combustion may produce toxic fumes of carbon monoxide (CO) and carbon dioxide (CO2​).
  • 4. Other Key Data
    • Flash Point: 166 °C (331 °F) - Closed cup
    • Autoignition Temperature: 371 °C (700 °F)
    • Explosive Limits:
    • Lower Explosive Limit (LEL): 0.9 % (V)
    • Upper Explosive LImit (UEL): 9.2 % (V)
    • Refractive Index (n20/D): ~1.456
 

MSDS

99.5% Triethylene glycol--MSDS     Download
 

Certificates Of Analysis

99.5% Triethylene glycol--COA      Download
 

Application

1. Natural gas and gas dehydration. TEG is the most commonly used desiccant in the natural gas industry. It is used to remove moisture from natural gas to prevent pipeline corrosion and the formation of natural gas hydrates (ice-like crystals).

2. Used in the production of glass fiber, molding resin, triethylene glycol lipid plasticizers such as triethylene glycol diisooctanoate (3GO).

3. Used in the production of automotive brake fluid, brake fluid, and lubricating oil.

4. Used in the production of polyester polyols and polyether polyols.

5. Used in antifreeze for pesticides.

6. Used in the synthesis of triethylene glycol trinitrate.

Safety Information

  • This information is a summary based on the Globally Harmonized System of Classification and Labelling of Chemicals (GHS).
    • 1. GHS Classification
      • This substance is not classified as hazardous according to the Globally Harmonized System (GHS).
    • 2. GHS Label Elements
      • Pictograms: No pictogram is required.
      • Signal Word: No signal word is required.
      • Hazard Statements: No hazard statements are required.
      • Precautionary Statements:
        • P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. (Recommended as good practice).
    • 3. Summary of Primary Hazards
      • Health Hazards: Triethylene glycol has very low acute toxicity by oral, dermal, and inhalation routes. It is not considered to be a skin or eye irritant under GHS classification criteria, although direct contact with eyes may cause slight, temporary irritation. It is not a skin sensitizer and is not considered carcinogenic or mutagenic. Compared to Ethylene Glycol and Diethylene Glycol, it is significantly less toxic. However, ingestion of very large quantities is not recommended.
      • Fire Hazards: Combustible liquid. It has a high flash point and is not considered a fire hazard under normal conditions, but it will burn if exposed to a strong ignition source and preheated.
      • Environmental Hazards: It is not classified as hazardous to the aquatic environment. It is readily biodegradable and has a low potential for bioaccumulation.

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