Ethylene Glycol Dimethacrylate, Ethylene Glycol Methacrylate, Dimethacrylate Ethylene Glycol, EGDMA, 97-90-5
ETHYLENE GLYCOL DIMETHACRYLATE (EGDMA)
CAS Number: 97-90-5
EC Number (EINECS): 202-617-2
Molecular Formula: C₁₀H₁₄O₄
Molecular Weight: 198.16 g/mol
Chemical Class: Methacrylate ester (crosslinking monomer)
SECTION 1: PRODUCT IDENTIFICATION AND CHEMICAL IDENTITY
| Parameter |
Description |
| Chemical Name (IUPAC) |
Ethylene glycol dimethacrylate |
| Other Names |
EGDMA, Ethylene Glycol Dimethacrylate, 2-Propenoic acid, ethylene glycol ester, Ethylene glycol methacrylate, Dimethacrylate ethylene glycol |
| CAS Number |
97-90-5 |
| EC Number (EINECS) |
202-617-2 |
| Molecular Formula |
C₁₀H₁₄O₄ |
| Molecular Weight |
198.16 g/mol |
| Chemical Class |
Methacrylate ester (crosslinking monomer) |
| Structure |
CH₂=C(CH₃)COOCH₂CH₂OCOC(CH₃)=CH₂ |
| Appearance |
Clear, colorless liquid |
| Odor |
Mild methacrylate odor |
| Functionality |
Two (dimethacrylate) |
SECTION 2: PHYSICAL AND CHEMICAL PROPERTIES
| Property |
Value / Range |
| Molecular Formula |
C₁₀H₁₄O₄ |
| Molecular Weight |
198.16 g/mol |
| Appearance |
Clear, colorless liquid |
| Odor |
Mild methacrylate odor |
| Density (25°C) |
~1.1 g/cm³ |
| Boiling Point |
>250°C |
| Freezing Point |
-20°C |
| Flash Point |
~110°C (closed cup) |
| Viscosity (25°C) |
10–20 mPa·s (cP) |
| Purity |
≥ 98.5% |
| Acid Content |
≤ 2.5 mg KOH/g |
| Water Content |
≤ 0.15% |
| Color (APHA) |
≤ 10 |
| Functionality |
2 (dimethacrylate) |
| Refractive Index |
~1.455 |
| Surface Tension |
~30-35 mN/m |
| Vapor Pressure (20°C) |
<0.01 mmHg (very low) |
| Polymerization Inhibitor |
100–200 ppm MEHQ (hydroquinone monomethyl ether) |
SECTION 3: CHEMICAL PROPERTIES AND REACTIONS
| Property |
Description |
| Chemical Class |
Methacrylate ester (crosslinking monomer) |
| Functional Groups |
Two methacrylate groups (C=C) |
| Reactivity |
High; readily polymerizes under UV/EB or heat |
| Polymerization |
Free-radical polymerization (bulk, solution, suspension) |
| Copolymerization |
Copolymerizes with acrylates, methacrylates, styrene, and other vinyl monomers |
| Crosslinking |
Forms crosslinked network structures |
| Thermal Decomposition |
> 200°C releases CO, CO₂, and irritant vapors |
| Hydrolysis |
Slow hydrolysis in acidic/basic media |
| Oxidation |
May form peroxides in air |
| Polymerization Inhibitor |
100–200 ppm MEHQ |
3.1. Key Reactions
| Reaction Type |
Description |
| Radical Polymerization |
UV/EB or heat → Crosslinked network |
| Copolymerization |
With acrylates, methacrylates, styrene, vinyl acetate |
| Hydrolysis |
Methacrylic acid + Ethylene glycol |
| Michael Addition |
Reacts with nucleophiles at β-carbon |
3.2. Polymerization Inhibition
| Parameter |
Information |
| Stabilizer |
100–200 ppm MEHQ |
| Stabilizer Function |
Prevents premature free-radical polymerization |
| Storage Temperature |
15–25°C |
| Inhibitor Removal |
Can be removed by distillation or inhibitor removal column |
SECTION 4: FUNCTIONAL PROPERTIES
| Property |
Description |
| Crosslinking Agent |
Provides crosslinking in polymer systems |
| High Reactivity |
High reactivity with free radicals |
| Increased Crosslink Density |
Increases crosslink density in cured systems |
| Mechanical Strength |
Enhances mechanical strength |
| Chemical Resistance |
Improves chemical resistance |
| Adhesion Properties |
Improves adhesion properties |
| Flexibility |
Enhances flexibility |
| Thermal Stability |
Provides good thermal stability |
| Solvent Resistance |
Improves solvent resistance |
SECTION 5: MAJOR APPLICATIONS AND END-USES
5.1. Dental Materials (Most Important Application)
| Application |
Function |
Suitability |
| Dental Composites |
Crosslinking monomer |
High |
| Dental Fillings |
Crosslinking monomer |
High |
| Dental Restorative Materials |
Crosslinking monomer |
High |
| Dental Adhesives |
Crosslinking monomer |
High |
5.2. UV/EB Curable Coatings
| Application |
Function |
Suitability |
| UV Curable Coatings |
Crosslinking monomer |
High |
| EB Curable Coatings |
Crosslinking monomer |
High |
| Industrial Coatings |
Crosslinking monomer |
High |
| Wood Coatings |
Crosslinking monomer |
High |
| Plastic Coatings |
Crosslinking monomer |
High |
5.3. Adhesives
| Application |
Function |
Suitability |
| Structural Adhesives |
Crosslinking monomer |
High |
| Anaerobic Adhesives |
Crosslinking monomer |
High |
| UV Curable Adhesives |
Crosslinking monomer |
High |
| High-Performance Adhesives |
Crosslinking monomer |
High |
5.4. Printing Inks and Varnishes
| Application |
Function |
Suitability |
| UV Curable Printing Inks |
Crosslinking monomer |
High |
| Varnishes |
Crosslinking monomer |
High |
| Flexographic Inks |
Crosslinking monomer |
High |
| Offset Inks |
Crosslinking monomer |
High |
5.5. Specialty Polymers and Resins
| Application |
Function |
Suitability |
| Specialty Polymers |
Crosslinking monomer |
High |
| Customized Polymer Resins |
Crosslinking monomer |
High |
| Optical Fiber Coatings |
Crosslinking monomer |
High |
| Photoresists |
Crosslinking monomer |
High |
| 3D Printing Resins |
Crosslinking monomer |
High |
SECTION 6: INDUSTRY SUITABILITY MATRIX
| Industry |
Suitability |
Explanation |
| Dental |
High |
Crosslinking monomer for composites and restorative materials |
| UV Coatings |
High |
Crosslinking monomer for high-performance coatings |
| Adhesives |
High |
Crosslinking monomer for structural and UV adhesives |
| Printing Inks |
High |
Crosslinking monomer for UV inks |
| Specialty Polymers |
High |
Crosslinking monomer for custom resins |
| 3D Printing |
High |
Crosslinking monomer for SLA resins |
| Electronics |
High |
Optical fiber coatings, photoresists |
| Automotive |
High |
UV coatings and adhesives |
| Cosmetics |
Not suitable |
Not used in cosmetics |
| Food |
Not suitable |
Not used as food additive |
SECTION 7: COMPARISON WITH OTHER DIMETHACRYLATES
| Property |
EGDMA |
TEGDMA |
BDGMA |
| Molecular Weight |
198.16 g/mol |
286.32 g/mol |
242.31 g/mol |
| Functionality |
2 |
2 |
2 |
| Viscosity (25°C) |
10–20 cP |
15–25 cP |
10–20 cP |
| Density (25°C) |
1.10 g/cm³ |
1.09 g/cm³ |
1.05 g/cm³ |
| Hydrophilicity |
Moderate |
High |
Low |
| Flexibility |
Moderate |
High |
Low |
| Hardness |
High |
Moderate |
High |
| Primary Use |
Dental, coatings |
Dental, coatings |
Coatings, adhesives |
SECTION 8: OTHER NAMES AND IDENTIFIERS
| Type |
Name / Description |
| IUPAC Name |
Ethylene glycol dimethacrylate |
| Commercial Names |
EGDMA, Ethylene Glycol Dimethacrylate |
| Synonyms |
2-Propenoic acid, ethylene glycol ester, Ethylene glycol methacrylate, Dimethacrylate ethylene glycol |
| CAS Number |
97-90-5 |
| EC Number |
202-617-2 |
| RTECS Number |
OZ4400000 |
| HS Code |
29161400 |
SECTION 9: TOXICOLOGY AND HEALTH EFFECTS
| Parameter |
Value / Description |
| GHS Classification |
Warning |
| Signal Word |
Warning |
| Hazard Statements |
H315 (Causes skin irritation), H317 (May cause allergic skin reaction), H319 (Causes serious eye irritation), H335 (May cause respiratory irritation) |
| Precautionary Statements |
P261 (Avoid breathing dust/fume/gas/mist/vapors/spray), P280 (Wear protective gloves/protective clothing/eye protection/face protection), P302+P352 (IF ON SKIN: Wash with plenty of water), P305+P351+P338 (IF IN EYES: Rinse cautiously with water) |
| Oral LD50 (Rat) |
~5,000-10,000 mg/kg |
| Dermal LD50 (Rabbit) |
> 5,000 mg/kg |
| Skin Irritation |
Irritant |
| Eye Irritation |
Irritant |
| Skin Sensitization |
Positive (allergic contact dermatitis) |
| Mutagenicity |
Negative |
| Carcinogenicity |
Not classified |
| Reproductive Toxicity |
Not classified |
| Target Organs |
Skin, eyes, respiratory system |
| Occupational Exposure Limit (TWA) |
Not established |
SECTION 10: ECOTOXICOLOGY AND ENVIRONMENTAL BEHAVIOR
| Parameter |
Value / Description |
| Fish Toxicity (LC50, 96 hours) |
~10-50 mg/L |
| Daphnia Toxicity (EC50, 48 hours) |
~10-50 mg/L |
| Algae Toxicity (EC50, 72 hours) |
~10-50 mg/L |
| Biodegradability |
Not readily biodegradable |
| Bioaccumulation |
Low to moderate (LogP ~1.5) |
| Hydrolysis |
Slow hydrolysis to methacrylic acid and ethylene glycol |
| Water Hazard Class (WGK Germany) |
WGK 2 (hazardous to water) |
Ecotoxicological Summary: EGDMA shows moderate aquatic toxicity. It is not readily biodegradable and requires proper waste management.
SECTION 11: SAFETY MEASURES AND PERSONAL PROTECTIVE EQUIPMENT
| Parameter |
Information |
| Respiratory Protection |
Organic vapor cartridge (at high concentrations) or SCBA |
| Gloves |
Chemically resistant (nitrile, butyl rubber, Viton) |
| Eye Protection |
Chemical safety goggles + face shield |
| Body Protection |
Chemical-resistant apron, full protective clothing |
| Ventilation |
Local exhaust ventilation and general ventilation |
| Special Precautions |
Avoid sunlight; protect from heat and ignition sources |
| Engineering Controls |
Closed systems; inert atmosphere (N₂) when possible |
SECTION 12: STORAGE INFORMATION
| Parameter |
Information |
| Storage Conditions |
Cool, dry, well-ventilated area |
| Temperature |
15–25°C (store under inert atmosphere) |
| Container |
Tightly closed, dark, plastic (HDPE) drums, IBC tanks |
| Special Requirements |
Must contain inhibitor (MEHQ); avoid extreme temperatures |
| Sunlight Protection |
Protect from direct sunlight |
| Air Exposure |
Limit air exposure (polymerization risk) |
| Shelf Life |
12 months (under recommended conditions) |
| Packaging |
200 kg drum, 1000 kg IBC, ISO tank |
SECTION 13: TRANSPORT INFORMATION
| Parameter |
Information |
| UN Number |
Not regulated (not classified as dangerous goods) |
| Hazard Class |
Not applicable |
| Packing Group |
Not applicable |
| Proper Shipping Name |
Ethylene Glycol Dimethacrylate |
| ADR/RID |
Not regulated |
| IMDG Code |
Not regulated |
| IATA (Air) |
Not regulated |
| Marine Pollutant |
No |
SECTION 14: FIRE-FIGHTING MEASURES
| Parameter |
Information |
| Fire Hazard |
Combustible liquid (flash point ~110°C) |
| Extinguishing Media |
Water fog, foam, CO₂, dry chemical |
| Special Hazards |
When heated, releases CO, CO₂, and irritant vapors |
| Decomposition Products |
CO, CO₂, methacrylate vapors |
| Protective Equipment |
Self-contained breathing apparatus (SCBA), full protective clothing |
| Explosion Risk |
Vapor/air mixtures may be explosive at high temperatures |
SECTION 15: ACCIDENTAL RELEASE AND CLEANUP
| Parameter |
Information |
| Personal Protection |
Gloves, safety goggles, face shield, protective clothing |
| Ventilation |
Increase ventilation; evacuate area |
| Cleanup Methods |
Absorb with inert absorbent material; collect in sealed containers |
| Environmental Precautions |
Prevent entry into drains and water bodies |
| Waste Disposal |
According to local regulations; incineration (hazardous waste) |
SECTION 16: FIRST AID MEASURES
| Exposure Route |
Action |
| Inhalation |
Move to fresh air. Administer oxygen if breathing difficulty. Seek medical attention. |
| Skin Contact |
Remove contaminated clothing. Wash with soap and plenty of water for at least 15 minutes. Seek medical attention. |
| Eye Contact |
Rinse with plenty of water for at least 15 minutes. Seek immediate medical attention. |
| Ingestion |
Do NOT induce vomiting. Drink plenty of water. Seek immediate medical attention. |
SECTION 17: REGULATORY INFORMATION
| Region / Authority |
Status |
| EU REACH |
Registered |
| Turkey KKDİK |
Registration required |
| USA TSCA |
Listed |
| USA FDA |
Approved for dental applications |
| EINECS |
202-617-2 |
| RTECS |
OZ4400000 |
| WGK (Germany) |
2 (hazardous to water) |
| RoHS |
Compliant |
| California Prop 65 |
Not listed |
SECTION 18: SUMMARY AND CRITICAL WARNINGS
Product Summary
| Parameter |
Value |
| Product |
Ethylene Glycol Dimethacrylate (EGDMA) |
| CAS |
97-90-5 |
| Appearance |
Clear, colorless liquid |
| Density |
~1.1 g/cm³ |
| Viscosity (25°C) |
10–20 cP |
| Functionality |
2 (dimethacrylate) |
| Key Industries |
Dental, coatings, adhesives, specialty polymers |
CRITICAL WARNINGS
-
Crosslinking Monomer: EGDMA is a low-viscosity, difunctional methacrylate monomer widely used as a crosslinking agent in polymer formulations.
-
Dental Applications: EGDMA is widely used in dental composites, fillings, and restorative materials as a crosslinking monomer.
-
High Reactivity: Exhibits high reactivity with free radicals; readily polymerizes under UV/EB or heat.
-
Crosslink Density: Increases crosslink density, mechanical strength, and chemical resistance in cured systems.
-
Polymerization Risk: Readily polymerizes; always contains inhibitor (MEHQ). Keep away from heat and light.
-
Skin Sensitizer: EGDMA may cause allergic skin reactions (H317). Appropriate PPE required.
-
Low Viscosity: Low viscosity (10–20 cP) facilitates its use as a reactive diluent and crosslinker in formulations.
-
Storage: Store in cool, dark, well-ventilated areas. Shelf life is 12 months.
-
Hydrolysis: Slow hydrolysis in acidic/basic media. Protect from moisture.
-
Regulatory Status: Registered under REACH. FDA-approved for dental applications.
IMPORTANT DISCLAIMER: This Technical Data Sheet (TDS) is for informational purposes only and is based on available technical data. The user is solely responsible for determining the product's suitability for their specific application and for complying with all applicable local, national, and international regulations. EGDMA readily polymerizes and is a known skin sensitizer! For complete safety, storage, handling, transportation, disposal, and regulatory compliance information, always refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. Users are responsible for testing the product in their own processes and applications. All local, national, and international regulations must be followed when working with EGDMA.
