Mono Ethylene Glycol

Industrial Grade · Fibre Grade — Bulk supply across India & International Markets

What is Mono Ethylene Glycol?

Mono Ethylene Glycol (MEG), commonly referred to simply as Ethylene Glycol, is a colourless, odourless, viscous liquid diol with the formula HOCH2CH2OH. It is fully miscible with water and is one of the most important industrial chemicals globally, serving as the foundational raw material for polyester fibre and PET resin production, as well as a key component in antifreeze and heat transfer fluids.

Polychem Industries supplies Mono Ethylene Glycol in industrial and fibre grades to automotive coolant manufacturers, polyester and PET producers, industrial heat transfer system operators, and chemical formulators across India and internationally. MEG's unique combination of freezing point depression, boiling point elevation, and chemical reactivity makes it indispensable across the automotive, textile, and packaging industries.

Available Grades

GradeFormPurityStandardApplications
Industrial / Fibre GradeColourless liquid99.8%+ (Industrial / Fibre Grade)IndustrialAntifreeze, coolants, PET resin, polyester fibre

Applications & Uses

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Antifreeze & Engine Coolant

The most recognised application. MEG is the primary active ingredient in automotive antifreeze and engine coolant formulations, lowering the freezing point and raising the boiling point of the coolant to protect engines in extreme temperatures.

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Polyester Fibre Production

A key raw material in the production of polyester fibre (PET fibre) used in textiles, carpets, and non-woven fabrics. MEG reacts with terephthalic acid or dimethyl terephthalate to form the polyester polymer chain.

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PET Resin for Packaging

Used in the production of PET (polyethylene terephthalate) resin for bottles, food packaging containers, and films. MEG is one of the two primary monomers (along with purified terephthalic acid) used in PET polymerisation.

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Industrial Heat Transfer Fluids

Used as a heat transfer fluid in HVAC systems, solar thermal systems, and industrial cooling/heating applications where freeze protection and efficient heat transfer are required.

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Chemical Intermediate

Used as a raw material and solvent in the production of various chemical products including unsaturated polyester resins, plasticisers, and other specialty chemical formulations.

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Natural Gas Dehydration

Used in the natural gas industry as a hydrate inhibitor, preventing the formation of gas hydrates in pipelines during the transport and processing of natural gas, particularly in cold climates and offshore operations.

Technical Specifications

Mono Ethylene Glycol — Key Properties

Chemical FormulaC2H6O2 (HOCH2CH2OH)
CAS Number107-21-1
Molecular Weight62.07 g/mol
AppearanceColourless, clear, odourless liquid
Purity99.8%+ (Industrial / Fibre Grade)
Boiling Point197.3°C
Density / Bulk Density1.113 g/cm3 at 20°C
pH6.0 – 7.5 (10% solution)
Packaging Available200 L drums / IBC tanks / Bulk tanker
StorageStore in cool, dry place in sealed containers. Stable under normal storage conditions. Keep away from oxidising agents.

Why Source Mono Ethylene Glycol from Polychem Industries?

  • Industrial and Fibre Grade available with full quality documentation
  • High purity (99.8%+) for polyester and PET resin applications
  • Certificate of Analysis and MSDS provided on request
  • Reliable bulk supply in drums, IBC tanks, and bulk tankers
  • Competitive pricing with year-round availability
  • Export documentation experience for international shipments

Frequently Asked Questions

What is the difference between Mono Ethylene Glycol, Di Ethylene Glycol, and Tri Ethylene Glycol?
These three glycols differ in molecular structure and the number of ethylene oxide units. MEG (Mono Ethylene Glycol) is the simplest diol with one ethylene unit. DEG (Di Ethylene Glycol) is formed from two ethylene glycol units joined by an ether bond, with higher molecular weight and lower volatility. TEG (Tri Ethylene Glycol) has three units, with even higher molecular weight and the highest boiling point of the three. Each has distinct applications based on these physical property differences.
Why is MEG used in PET bottle and polyester fibre production?
MEG reacts with terephthalic acid (or dimethyl terephthalate) through a polycondensation reaction to form the long polymer chains of PET (polyethylene terephthalate). This reaction is the foundation of both polyester fibre manufacturing (textiles) and PET resin manufacturing (bottles, packaging). MEG's purity directly affects the quality, clarity, and colour of the resulting polymer.
Is Mono Ethylene Glycol toxic?
Yes — Ethylene Glycol is toxic if ingested and should be handled with appropriate precautions. It has a sweet taste which can pose a risk if accessible to children or pets. Industrial handling should follow standard chemical safety protocols including appropriate PPE and proper storage away from food and beverage areas.
Do you export Mono Ethylene Glycol outside India?
Yes. We export to Bangladesh, Sri Lanka, Nepal, Bhutan, and South Africa with full export documentation. Contact us for export pricing and lead times.

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