Ethylene Glycol
CAS Number: 107-21-1
Ethylene glycol (EG) is the primary diol monomer for PET polyester and a key raw material for polyurethane synthesis, polyester resins, and antifreeze. In polymer synthesis, EG reacts with terephthalic acid or dimethyl terephthalate to produce PET, and serves as a chain extender or diol component in polyurethane and alkyd resin formulations.
Technical Specifications
| appearance | Colorless transparent liquid |
| purity (%) | ≥99.9 |
| color (Pt-Co) | ≤5 |
| water content (%) | ≤0.05 |
| acidity (as acetic acid, ppm) | ≤10 |
Applications
- PET polyester resin synthesis (fiber, bottle, film grades)
- Polyurethane chain extender and diol component
- Alkyd resin synthesis for coatings and varnishes
- Engine coolant and heat transfer fluid formulations
- Polyester polyol production for flexible foam
Key Features
- Ultra-high purity fiber grade for consistent PET IV buildup during solid-state polymerization
- Low acidity prevents catalyst poisoning in PET polycondensation
- Low water content minimizes hydrolysis and maintains esterification efficiency
- Versatile diol compatible with PTA, DMT, adipic acid, and isocyanate systems
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CAS Number
107-21-1
Category
Polymer Synthesis ChemicalsAvailability
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