Product Name: Ethylene Glycol Dimethacrylate
Synonyms: 1,2-Ethanediol Dimethacrylate, EGDMA
Chemical Formula: C10H14O4
CAS Number: 97-90-5
Recommended Use: Crosslinking agent in polymers, adhesives, dental materials, inks
Manufacturer Contact: Listed on packaging or invoice; phone and email support provided for emergencies
Emergency Overview: Colorless liquid with mild odor, can irritate skin, eyes, and respiratory system, flammable
UN Number: 1993
Packaging: Stored in drums, amber glass bottles, or polyethylene containers, shipped with protective secondary containment
GHS Classification: Flammable Liquids (Category 3), Skin Sensitizer (Category 1), Eye Irritation (Category 2A), Skin Irritation (Category 2), Specific Target Organ Toxicity - Single Exposure (Category 3)
Signal Word: Warning
Hazard Statements: Flammable liquid and vapor. May cause allergic skin reaction. Causes skin and eye irritation. May cause respiratory irritation.
Pictograms: Flame, Exclamation mark
Precautionary Statements: Keep away from heat and sources of ignition. Avoid breathing vapors. Wear protective gloves and eye protection. Wash thoroughly after handling. Use only outdoors or in a well-ventilated area.
Acute Effects: Inhalation and contact can cause immediate irritation. Sensitization possible with repeated exposure.
Chemical Name: Ethylene Glycol Dimethacrylate
CAS Number: 97-90-5
Concentration: 98-100%
Impurities: Traces of methacrylic acid, ethylene glycol, other methacrylates (each below 1%)
Substance Type: Pure substance, not a mixture
Relevant Exposures: Monomer use in commercial and laboratory environments
Inhalation: Move person into fresh air. Keep comfortable. Seek medical advice if symptoms persist. Remove from exposure source.
Skin Contact: Wash thoroughly with soap and water for fifteen minutes. Remove contaminated clothing. Medical evaluation recommended for persistent irritation or allergic reaction.
Eye Contact: Rinse continuously with lukewarm water for minutes while lifting eyelids. Get medical attention if pain or redness continues.
Ingestion: Rinse mouth with water. Never give anything to an unconscious person. Do not induce vomiting. Medical attention is necessary.
Most Important Symptoms: Skin redness, itching, swelling, burning in eyes, coughing, sore throat after inhaling.
Special Notes for Physicians: Treat symptomatically and consider risk of allergy or respiratory irritation.
Flammability: Flammable liquid and vapor. Emits toxic fumes under fire conditions.
Extinguishing Media: Use dry chemical, foam, carbon dioxide, or alcohol-resistant foam. Water spray suitable for cooling containers.
Special Hazards: Formation of carbon oxides, acrid smoke, and other hazardous gases during decomposition or combustion.
Protective Equipment: Full protective clothing and self-contained breathing apparatus.
Firefighting Methods: Cool containers exposed to flames. Avoid direct application of water into liquid to minimize risk of spreading fire. Remove from area if possible.
Explosion Risks: Vapors mixed with air can erupt in confined spaces. Containers may rupture from heat.
Personal Precautions: Evacuate unnecessary personnel from spill area. Ventilation required. Use protective gloves, goggles, and appropriate clothing.
Environmental Precautions: Avoid discharge into drains, soils, or surface water. Prevent entry into sewers and groundwater.
Cleanup Methods: Absorb with earth, sand, or inert material. Transfer to properly labeled chemical waste drums. Flush contaminated area with plenty of water after pickup. Contaminated tools and equipment must be washed thoroughly before reuse.
Emergency Procedures: Notify local authorities as required. Control spillage to prevent adverse impact.
Handling: Keep container tightly closed. Use only with adequate ventilation or fume extraction. Avoid skin and eye contact by wearing gloves and safety glasses. Ground and bond all equipment when transferring product.
Storage: Store in cool, well-ventilated areas. Protect from direct sunlight and sources of ignition. Use container resistant to methacrylates. Segregate from oxidizing agents, acids, and bases.
Other Notes: Keep away from food and beverages. Label storage area to indicate presence of hazardous materials. Store at recommended temperatures to block polymerization and degradation.
Incompatible Materials: Strong oxidizers, acids, bases, reducing agents.
Occupational Exposure Limits: No established limits for EGDMA. Use controls based on methacrylate class.
Engineering Controls: Provide local exhaust ventilation and process enclosures where possible. Emergency shower and eyewash stations in work area.
Personal Protective Equipment: Chemical-resistant gloves (nitrile recommended), goggles or face shield, flame-resistant clothing or lab coat, suitable respiratory protection if ventilation is inadequate (organic vapor cartridge or supplied air).
Hygiene Measures: No smoking, eating, or drinking in work area. Wash hands after handling. Dispose of contaminated PPE.
Appearance: Clear, colorless to pale yellow liquid
Odor: Mild methacrylate odor
Odor Threshold: Not established
pH: Not available
Melting Point: -20°C to -10°C
Boiling Point: 213-215°C
Flash Point: 99°C (Closed Cup)
Evaporation Rate: Below that of butyl acetate
Flammability: Flammable liquid
Vapor Pressure: 0.2 mmHg @ 25°C
Vapor Density: >1 (Air = 1)
Specific Gravity: 1.07 (Water = 1)
Solubility: Insoluble in water, miscible with organic solvents (e.g., ethanol, acetone, benzene)
Partition Coefficient (n-octanol/water): log Pow 1.25
Autoignition Temperature: 330°C
Decomposition Temperature: Info varies by source; thermal stability crucial
Viscosity: 6-18 mPa.s @ 20°C
Stability: Stable under normal conditions, but heat, light, and contamination increase risk of polymerization.
Incompatible Materials: Strong oxidizers, metal salts (especially iron), acids and bases hasten decomposition.
Hazardous Reactions: Polymerizes rapidly on contact with sunlight, heat, or peroxides. Liberation of heat raises pressure in closed systems.
Decomposition Products: Methacrylic acid, carbon monoxide, carbon dioxide, irritating fumes.
Polymerization Inhibitor: Product shipped with small amount of MEHQ or similar inhibitor; age or improper storage may deactivate.
Precautions: Separate from initiators, avoid spills onto metals, do not transfer to non-approved containers.
Acute Toxicity (Oral): LD50 (rat) 1,200-3,000 mg/kg
Inhalation: Vapors irritate nose, throat, lungs. Symptoms include cough, headache, dizziness.
Skin: Causes strong local irritation. Sensitization possible with repeated contact; symptoms develop over hours or days.
Eye: Severe burning, tearing, redness
Chronic Effects: Allergic dermatitis common in repeated exposures. No reliable evidence for carcinogenicity, mutagenicity, or reproductive harm in humans. Some animal studies indicate teratogenic effects at high doses.
Target Organs: Skin, eyes, respiratory tract
Symptoms of Overexposure: Rash, dryness, impaired breathing, swelling, rarely systemic toxicity due to low vapor pressure
Ecotoxicity: Harmful to aquatic life. Fish (Oryzias latipes): LC50 23 mg/L (48h). Daphnia magna: EC50 28 mg/L (48h)
Persistence/Degradability: Moderate persistence. Not readily biodegradable in natural conditions
Mobility: Low mobility in soil, may evaporate into atmosphere
Bioaccumulation: Low potential, log Kow suggests some accumulation possible
Harm to Sewage Systems: Inhibition at high concentrations, toxic to aquatic microorganisms
Other Adverse Effects: Methacrylate monomers may disrupt aquatic environments and endanger sensitive species
Waste Treatment Methods: Incineration preferred, complying with local regulations
Contaminated Packaging: Triple rinse, puncture, dispose as hazardous waste
Avoid: Landfill release, pouring into drains, burning in open air without equipment
Precautions: Consult licensed chemical waste disposal contractor, keep detailed disposal records
Local Guidance: National and state environmental agencies provide protocols for monomer disposal; follow all safety recommendations
UN Number: 1993
Proper Shipping Name: Flammable liquid, n.o.s. (Ethylene Glycol Dimethacrylate)
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: III
Marine Pollutant: No
Transport Labels: Flammable liquid pictogram, Keep Away from Heat
Special Transportation Requirements: Protect containers from damage and temperature extremes. Follow rules of ADR/RID, IMDG, IATA, and DOT. Shipping papers must declare chemical hazard and emergency contacts.
TSCA: Listed
EINECS: 202-617-2
REACH: Registered (as monomer)
OSHA: Hazardous chemical under 29 CFR 1910.1200
SARA: Not listed in Sections 302, 304, or 313, but subject to general reporting
Canada DSL/NDSL: Listed
Other Requirements: Employee right-to-know training required. PPE, Hazard labeling, and SDS availability mandated by local laws.
