Ethylene Glycol Polyethylene Glycol Ether, Ethylene Glycol Monovinyl Polyethylene Glycol Ether, EPEG, 31497-33-3

ETHYLENE GLYCOL POLYETHYLENE GLYCOL ETHER (EPEG) 

Product Name: Ethylene Glycol Polyethylene Glycol Ether (EPEG)
Chemical Name: Poly(oxy-1,2-ethanediyl), α-(2-methyl-2-propen-1-yl)-, ω-hydroxy-
CAS Number: 31497-33-3
Form: Colorless to light yellow liquid / White to light yellow solid
Chemical Class: Polyether, vinyl ether, non-ionic surfactant, macromonomer

SECTION 1: PRODUCT IDENTIFICATION AND CHEMICAL IDENTITY

PRODUCT DESCRIPTION AND EXPLANATION:

Ethylene Glycol Polyethylene Glycol Ether (EPEG) is a non-ionic surfactant consisting of a polyethylene glycol (PEG) chain with a vinyl ether group at one end and a hydroxyl group at the other . EPEG is a typical vinyl ether polyether macromonomer that serves as a fundamental raw material for polycarboxylate superplasticizer (PCE) production .

The vinyl ether group in EPEG's molecular structure provides significantly higher chemical reactivity than conventional linear enol monomers due to the electron-withdrawing inductive effect of the double bond . This property enables EPEG to participate in free radical copolymerization with suitable comonomers such as maleic acid, maleic anhydride, and acrylic acid . The resulting PCE exhibits superior performance properties including high water reduction rate, excellent slump retention, and reduced concrete viscosity .

EPEG represents an important innovation in the construction chemicals field. Compared to other polyether macromonomers such as VPEG and HPEG, it offers advantages including lower polymerization temperature and shorter reaction time . Furthermore, EPEG monomer can react at room temperature (above 5°C) and is suitable for single-pot synthesis methods, significantly simplifying the production process . It is effective in improving concrete fluidity and workability in high-performance and high-strength concrete applications, especially at low water/cement ratios .

SECTION 2: PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL AND CHEMICAL PROPERTIES EXPLANATION:

EPEG is available as a colorless to light yellow liquid or white to light yellow solid depending on the product type . It is completely soluble in water . Melting point for EPEG-3000 is ~59°C and for EPEG-3600 is ~61°C . Flash point is >250°C, indicating it is not readily flammable .

EPEG is manufactured in different molecular weights (EPEG-3000, EPEG-3600), providing different hydroxyl values and reactivity characteristics . As molecular weight increases, hydroxyl value decreases. Double bond retention rate is ≥90-93%, indicating high chemical reactivity .

SECTION 3: CHEMICAL PROPERTIES AND REACTIONS

CHEMICAL PROPERTIES EXPLANATION:

The vinyl ether group in EPEG's molecular structure provides significantly higher chemical reactivity than conventional linear enol monomers due to the electron-withdrawing inductive effect of the double bond . This property enables EPEG to efficiently participate in free radical copolymerization reactions .

EPEG copolymerizes with suitable comonomers such as acrylic acid, maleic acid, and maleic anhydride to form polycarboxylate superplasticizer (PCE) . EPEG monomer has a low polymerization temperature requirement and the reaction can be completed at room temperature above 5°C . Furthermore, it is suitable for single-pot synthesis methods, meaning the prepared solution can be added to the reaction system in a single batch and the reaction can be completed with 30-40 minutes of mixing .

SECTION 4: FUNCTIONAL PROPERTIES

FUNCTIONAL PROPERTIES EXPLANATION:

EPEG's primary functional role is as a macromonomer for polycarboxylate superplasticizer (PCE) synthesis. Its high double bond reactivity enables efficient free radical copolymerization with acrylic acid and other monomers .

EPEG-based PCE provides high water reduction (20-30%) and excellent slump retention . The specific molecular structure of EPEG reduces steric hindrance of side chains, liberates side chain mobility, and improves cohesion and interpenetration of polyether side chains . This results in better comprehensive performance of PCE products .

EPEG is particularly effective in reducing concrete viscosity at low water/cement ratios . Research shows that concrete prepared with EPEG-based PCE exhibits the lowest viscosity and fastest flow rate . Furthermore, EPEG-based PCE improves concrete workability and flow rate and has significant improvement effect on concrete mechanical properties .

SECTION 5: APPLICATION AREAS AND INDUSTRIAL USES

APPLICATION AREAS EXPLANATION:

Polycarboxylate Superplasticizer (PCE) Production: EPEG's most important application is as a raw material for polycarboxylate superplasticizer production . EPEG copolymerizes with acrylic acid and other monomers to form PCE with high water reduction, dispersion, and slump retention.

High Strength Concrete: EPEG-based PCE is used in high-strength concrete production . EPEG-3000/3600 grades are specifically designed for concrete grades above C60.

Low Viscosity Concrete: EPEG is particularly effective in reducing concrete viscosity at low water/cement ratios . This is important for applications requiring high fluidity and ultra-high performance concrete (UHPC).

Ready-Mix Concrete: EPEG-based PCE is suitable for ready-mix concrete applications requiring long-distance transport and good workability . The special molecular design enables PCE products to be used in field mixing and long-distance transport of high-performance concrete.

Poor Quality Aggregates: PCE synthesized from EPEG monomer is particularly suitable for projects with low-quality mud and gravel or high sediment content .

SECTION 6: ADVANTAGES

• High Reactivity: Double bond retention ≥90-93% for efficient copolymerization

• Low Polymerization Temperature: Reaction possible at room temperature above 5°C

• Single-Pot Synthesis: Simplified production process, 30-40 minutes reaction time

• Low Viscosity: Reduces concrete viscosity especially at low w/c ratios

• High Water Reduction: 20-30% water reduction rate

• Excellent Slump Retention: Long-term workability maintenance

• High Early Strength: Superior early compressive strength with EPEG-3000/3600

• Wide Compatibility: Good compatibility with different cement types, fly ash, silica fume, and slag

• Non-Toxic: Non-toxic

• Alternative to HPEG/TPEG/VPEG: New generation vinyl ether PCE family

SECTION 7: QUALITY STANDARDS AND SPECIFICATIONS

ADDITIONAL SPECIFICATIONS:

QUALITY STANDARDS EXPLANATION:

EPEG is manufactured with narrow molecular weight distribution and low impurity content. Key quality parameters include molecular weight, hydroxyl value, water content, pH, and double bond retention. Double bond retention ≥90-93% ensures high reactivity for efficient copolymerization . EPEG-3000 and EPEG-3600 offer different molecular weights and hydroxyl values for varying viscosity and reactivity characteristics .

SECTION 8: SAFETY AND TOXICOLOGY

SAFETY PRECAUTIONS:

• Inhalation: No respiratory hazard under normal use. Provide good ventilation if vapors form.

• Skin Contact: Wash with plenty of water and soap upon skin contact.

• Eye Contact: Rinse with plenty of water for at least 15 minutes. Consult a doctor if necessary.

• Ingestion: Seek immediate medical attention if large amount is swallowed. Do not induce vomiting.

• PPE Recommendations: Safety goggles, nitrile/neoprene gloves, protective clothing.

SAFETY AND TOXICOLOGY EXPLANATION:

EPEG is not classified as hazardous under GHS . No harmful health effects are expected under normal use conditions. Non-toxic . May cause mild skin irritation; may cause mild eye irritation. No mutagenic, carcinogenic, or reproductive toxicity classification. Not flammable .

SECTION 9: FIRE FIGHTING MEASURES

FIRE FIGHTING MEASURES EXPLANATION:

EPEG is not classified as a flammable liquid with flash point >250°C and is not flammable . However, it may burn at high temperatures. In case of fire, use water spray, foam, dry chemical, or CO₂ for extinguishing. High temperatures may release CO, CO₂, and hydrocarbon fumes. Use self-contained breathing apparatus (SCBA) and full protective clothing during fire fighting.

SECTION 10: ACCIDENTAL RELEASE MEASURES

ACCIDENTAL RELEASE MEASURES EXPLANATION:

In case of spillage, appropriate personal protective equipment should be worn (safety goggles, gloves, protective clothing). The area should be ventilated and the liquid contained to prevent spread. Cleaning should be done by absorption with inert absorbent material (sand, diatomite, sawdust), and the spilled material placed in an appropriate disposal container. Environmental release (drains, sewers, water bodies) should be prevented. Waste should be disposed according to local regulations.

SECTION 11: FIRST AID MEASURES

FIRST AID MEASURES EXPLANATION:

Standard first aid measures apply for EPEG exposure:

• Inhalation: In case of vapor or mist inhalation, move the person to fresh air. If symptoms (coughing, dizziness) persist, consult a doctor.

• Skin Contact: Remove liquid from skin by washing with plenty of water and soap. Remove contaminated clothing.

• Eye Contact: Rinse eyes with plenty of water for at least 15 minutes immediately. Remove contact lenses if present. If irritation persists, consult a doctor.

• Ingestion: If large amount is swallowed, seek immediate medical attention. Do not induce vomiting. Rinse mouth with water.

SECTION 12: STORAGE AND HANDLING

STORAGE AND HANDLING EXPLANATION:

EPEG should be stored in cool, dry, and well-ventilated areas, protected from direct sunlight and rain . Keep containers tightly closed in original packaging. Non-toxic and not flammable, therefore can be shipped as general chemical . Shelf life is 1 year .

Handling Notes:

• Designed for use in industrial production processes

• Do not use in prohibited or unsuitable applications

• Use appropriate PPE (safety goggles, gloves)

• Use in well-ventilated areas

SECTION 13: TRANSPORT INFORMATION

TRANSPORT INFORMATION EXPLANATION:

EPEG is not classified as a hazardous substance for transport . UN number, hazard class, and packing group are not required. Non-toxic and not flammable, therefore can be shipped as general chemical . Protect from leakage and keep away from moisture during transport.

SECTION 14: REGULATORY INFORMATION

REGULATORY INFORMATION EXPLANATION:

EPEG is registered in all major industrial markets including the EU (REACH), USA (TSCA), Canada (DSL), Australia (AICS), Japan (ENCS), Korea (KECL), and China (IECSC). In Türkiye, it requires mandatory registration under KKDİK (Regulation on Registration, Evaluation, Authorization and Restriction of Chemicals). Since it is not classified as hazardous under GHS, no special labeling requirements apply.

SECTION 15: SUMMARY AND CRITICAL NOTES

SUMMARY:

Ethylene Glycol Polyethylene Glycol Ether (EPEG, CAS 31497-33-3) is a non-ionic surfactant consisting of a polyethylene glycol chain with vinyl ether and hydroxyl groups. It appears as a colorless to light yellow liquid or solid, is completely water soluble, and has a density of ~1.05 g/cm³.

The vinyl ether group provides high chemical reactivity and enables participation in free radical copolymerization reactions . This property makes it an essential raw material for polycarboxylate superplasticizer (PCE) production .

EPEG-based PCE provides superior performance properties including high water reduction (20-30%), excellent slump retention, concrete viscosity reduction, and high early strength . EPEG simplifies the production process with low polymerization temperature (≥5°C) and single-pot synthesis method .

Not classified as hazardous under GHS; non-toxic . Store in cool, dry, well-ventilated areas. Shelf life is 1 year .

Basic Properties:

Main Application Areas:

Key Safety Points:

• NOT HAZARDOUS: Not classified as hazardous under GHS

• NON-TOXIC: Non-toxic

• NOT FLAMMABLE: Not flammable

• IRRITANT: May cause mild skin and eye irritation; use appropriate PPE

• STORAGE: Cool, dry, well-ventilated; protect from light and moisture

• PPE RECOMMENDED: Safety goggles, nitrile/neoprene gloves, protective clothing

• SHELF LIFE: 1 year

CRITICAL NOTES:

1. High Reactivity Vinyl Ether Group: EPEG's vinyl ether group provides significantly higher chemical reactivity due to electron-withdrawing effect . This makes EPEG an ideal macromonomer for efficient copolymerization with acrylic acid and maleic anhydride.

2. Low Polymerization Temperature: EPEG monomer can react at room temperature above 5°C . This is a significant advantage over conventional monomers such as HPEG and TPEG.

3. Single-Pot Synthesis: EPEG is suitable for single-pot synthesis methods; the prepared solution can be added to the reaction system in a single batch and the reaction can be completed with 30-40 minutes of mixing . This significantly simplifies the PCE production process.

4. Concrete Viscosity Reduction: EPEG-based PCE is particularly effective in reducing concrete viscosity at low water/cement ratios . This is critical for applications requiring high fluidity and UHPC.

5. High Water Reduction and Slump Retention: EPEG-based PCE provides 20-30% water reduction and excellent slump retention . This is especially important for long-distance transport and projects with poor quality aggregates.

6. New Generation PCE Family: EPEG represents the new generation vinyl ether PCEs expanding the VPEG family . Compared to HPEG and IPEG PCEs, EPEG-based PCEs offer superior viscosity reduction and workability properties .

IMPORTANT DISCLAIMER: This Technical Data Sheet (TDS) is for informational purposes only and is prepared based on available technical data. The information provided is believed to be accurate. However, the user is solely responsible for determining the product's suitability for their specific applications and for complying with all applicable local, national, and international regulations and safety requirements. For complete safety, storage, handling, transport, waste, and regulatory compliance information, please refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. Users are obligated to test the product in their own processes and applications. All occupational health and safety rules must be observed when working with EPEG.