99.5% Ethylene glycol

99.5% Ethylene glycol

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  • Category

    Polyol Series

  • Describe

    Ethylene glycol (EG) is a common organic compound belonging to the diol class and is widely used in industry, especially as an antifreeze agent, solvent and polyester raw material.

  • Cas No.

    107-21-1

  • Purity

    99.5%

  • Synonym(s)

    EG

Physical and chemical properties

  • 1. Chemical Identity
    • Chemical Name: Ethylene glycol
    • IUPAC Name: Ethane-1,2-diol
    • Synonyms: 1,2-Ethanediol, Monoethylene glycol (MEG), Glycol
    • CAS Number: 107-21-1
    • EC Number: 203-473-3
    • Molecular Formula: C2​H6​O2​
    • Molecular Weight: 62.07 g/mol
  • 2. Physical Properties
    • Appearance: Clear, colorless, viscous, hygroscopic liquid.
    • Odor: Odorless.
    • Taste: Sweet taste. (Note: Highly toxic, should never be ingested).
    • Melting Point: -13 °C (9 °F)
    • Boiling Point: 197-198 °C (387-388 °F) at 1013 hPa
    • Density: 1.113 g/cm³ at 20 °C
    • Solubility:
    • In Water: Miscible (soluble in all proportions).
    • In Organic Solvents: Soluble in alcohol, acetone, and acetic acid. Sparingly soluble in ether. Insoluble in benzene and chlorinated hydrocarbons.
    • Vapor Pressure: 0.08 hPa at 20 °C
    • Vapor Density: 2.14 (Air = 1)
    • Viscosity: 16.1 mPa·s at 25 °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. Can react violently.
    • Hazardous Decomposition Products: Combustion may produce toxic fumes of carbon monoxide (CO) and carbon dioxide (CO2​).
  • 4. Other Key Data
    • Flash Point: 111 °C (232 °F) - Closed cup
    • Autoignition Temperature: 410 °C (770 °F)
    • Explosive Limits:
    • Lower Explosive Limit (LEL): 3.2 % (V)
    • Upper Explosive Limit (UEL): 15.3 % (V)
    • Refractive Index (n20/D): ~1.432
 

Application

1. Used in the production of polyester fiber, also known as polyester, such as polyethylene terephthalate (PET).

2. Used in the production of unsaturated resins and polyester polyols.

3. Used in the production of automotive antifreeze, industrial equipment antifreeze, air conditioning refrigerant, and lubricating oil.

4. Used in the production of ethylene glycol diglycidyl ether, glyoxal, and oxalic acid.

5. Used in the manufacture of coatings, adhesives, fiberglass reinforced plastics (FRP) and other composite materials.

6. Ethylene glycol, as an electrolyte component, improves the energy density and cycle life of batteries, and supports the development of electric vehicles and energy storage systems.

Safety Information

  • This information is a summary based on the Globally Harmonized System of Classification and Labelling of Chemicals (GHS).
    • 1. GHS Classification
      • Acute Toxicity, Oral (Category 4)
      • Specific Target Organ Toxicity — Repeated Exposure (Category 2), Kidneys
    • 2. GHS Label Elements
      • Pictograms:
        • Exclamation Mark (GHS07)
        • Health Hazard (GHS08)
      • Signal Word: Warning
      • Hazard Statements (H-Statements):
        • H302: Harmful if swallowed.
        • H373: May cause damage to organs (kidneys) through prolonged or repeated exposure.
      • Precautionary Statements (P-Statements):
        • Prevention:
          • P260: Do not breathe dust/fume/gas/mist/vapors/spray.
          • P264: Wash skin thoroughly after handling.
          • P270: Do not eat, drink or smoke when using this product.
      • Response:
        • P301 + P312: IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
        • P314: Get medical advice/attention if you feel unwell.
        • P330: Rinse mouth.
      • Storage:
        • Store away from incompatible materials.
      • Disposal:
        • P501: Dispose of contents/container to an approved hazardous waste disposal plant.
    • 3. Summary of Primary Hazards
      • Health Hazards: Harmful if swallowed. Ingestion is a medical emergency. The sweet taste can make it attractive to children and animals. Metabolism in the body produces toxic compounds (glycolic acid, oxalic acid) which cause severe metabolic acidosis and kidney failure (renal toxicity) due to the formation of calcium oxalate crystals. Prolonged or repeated exposure can lead to kidney damage.
      • Fire Hazards: Combustible liquid. Not highly flammable at room temperature but can be ignited.
      • Environmental Hazards: While readily biodegradable, large spills can be harmful to aquatic life.

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