Understanding the Safety Profile of Ethylene Glycol Dimethacrylate

Identification

Chemical Name: Ethylene Glycol Dimethacrylate
Common Uses: Crosslinking agent in polymer production, dental materials, adhesives, surface coatings
Molecular Formula: C10H14O4
Physical Description: Clear, colorless liquid with mild characteristic odor
CAS Number: 97-90-5
Synonyms: 1,2-Bis(methacryloyloxy)ethane

Hazard Identification

Classification: Flammable liquid, skin irritant, sensitizer, environmental hazard
Main Risks: Irritation of skin and eyes on contact, respiratory discomfort on inhalation, potential for allergic skin reactions, toxic to aquatic life if released
Hazard Symbols: GHS02, GHS07, GHS09 (Flame, Exclamation Mark, Environment)
Safety Pictograms: Standard hazard pictograms for chemical irritants and environmental toxicity
Precautionary Statements: Avoid breathing vapors, wear protective gloves and eye protection, prevent environmental release
Chronic Effects: Possible dermal sensitization after repeated or prolonged contact

Composition / Information on Ingredients

Main Component: Ethylene glycol dimethacrylate at high concentration
Possible Impurities: Traces of methacrylic acid, hydroquinone as stabilizer
Allergen Potential: Methacrylate compounds can trigger allergic responses in susceptible individuals
Mixtures: Sometimes blended with other polymer-forming chemicals for technical applications, though the profile remains similar in hazard

First Aid Measures

Skin Contact: Wash thoroughly with soap and water; seek attention for persistent irritation
Eye Contact: Rinse immediately with water for several minutes, remove contact lenses if present, seek medical evaluation
Inhalation: Move away from exposure; breathe fresh air; medical attention if symptoms linger
Ingestion: Rinse mouth, avoid forcing vomiting, consult a doctor quickly
Symptom Awareness: Skin redness, eye pain, coughing, difficulty breathing mark serious exposure
Special Episode: Any allergic reaction signs—rash, difficulty breathing, swelling—require urgent care

Fire-Fighting Measures

Suitable Extinguishing Media: Alcohol-resistant foam, water spray, dry chemical, carbon dioxide
Special Hazards: Combustion may yield irritating fumes including carbon monoxide, carbon dioxide
Protective Equipment: Firefighters need full protective gear and self-contained breathing apparatus
Additional Steps: Cool containers with water if exposed to fire, prevent spill runoff from reaching waterways

Accidental Release Measures

Personal Protection: Gloves, goggles, chemical-resistant clothing for responders
Spill Response: Contain spill, absorb with inert material, ventilate area
Environmental Caution: Prevent entry to sewers, drains, or water sources
Clean-Up Practice: Collect residue for proper disposal, flush area with water after material pickup
Small Spills: Absorb and put in container for hazardous waste disposal
Large Spills: Evacuate area, call specialized team for cleanup

Handling and Storage

Safe Handling: Keep away from open flames and heat sources, avoid breathing vapors
Hygiene Practice: Avoid contact with skin and eyes, don’t eat, drink, or smoke while handling
Storage Conditions: Store in tightly closed containers; cool, dry, well-ventilated place
Storage Limitation: Keep container out of direct sunlight, away from oxidizers and incompatible substances
Shelf Stability: Use older stock first; presence of stabilizer such as hydroquinone helps against polymerization
Segregation: Maintain distance from food, feed, or water sources

Exposure Controls and Personal Protection

Exposure Limit: No established occupational exposure limit in some countries, but keep to minimal exposure levels
Engineering Controls: Use chemical fume hood or adequate local exhaust
PPE For Staff: Gloves (nitrile or neoprene), splash-proof goggles, lab coat or apron
Respiratory Protection: Mask or respirator if ventilation is poor
Work Practice: Wash hands after use, remove contaminated clothing promptly, keep personal protective equipment clean

Physical and Chemical Properties

Appearance: Clear, colorless liquid
Odor: Faint, sharp, ester-like
Boiling Point: Near 270°C
Melting Point: Below typical room temperature, liquid at standard conditions
Vapor Pressure: Low at room temperature
Solubility: Not soluble in water, mixes with organic solvents
Density: Close to 1.05 g/cm³
Flash Point: Approximately 100°C (closed cup)
Autoignition Temperature: Higher than normal working temperatures (avoid ignition sources)

Stability and Reactivity

Chemical Stability: Stable under recommended handling and storage; sensitive to heat and light which can trigger unwanted polymerization
Incompatibility: Strong acids, oxidizers, peroxides, bases
Polymerization Risk: Can react vigorously if heated or mixed with incompatible chemicals, particularly in absence of stabilizers
Decomposition Products: Carbon oxides, irritating organic gases on heating or burning

Toxicological Information

Acute Toxicity: Harmful by ingestion and skin contact, though not among the most acutely toxic industrial liquids
Skin Effects: Redness, itching, dermatitis from repeated exposures
Eye Effects: Pain, redness, lacrimation
Allergic Responses: Some users develop allergic skin reactions after frequent handling
Target Organs: Mainly affects skin, eyes, respiratory tract on overexposure
Long-term Risks: No strong evidence for carcinogenicity, but precaution matters given allergic and irritant profiles of methacrylates

Ecological Information

Toxicity To Aquatic Life: Toxic to fish and aquatic invertebrates, avoid discharge to environment
Bioaccumulation: Expected to have low bioaccumulation potential
Persistence: Slowly biodegradable; breakdown can occur in natural conditions but significant enough to warrant care
Environmental Mobility: Can move through soil if released in significant quantity, especially near water tables
Precautions: Avoid uncontrolled releases to minimize ecosystem disruption

Disposal Considerations

Waste Handling: Take to approved hazardous waste depot, do not pour down drain
Container Disposal: Empty containers need decontamination before recycling or discarding
Incineration:** Only licensed facilities, since burning produces toxic vapors
Reuse/Recycling: Unused product may return to original application if uncontaminated; avoid mixing with other chemicals without knowledge of compatibility