Product Name: 2-Ethylhexyl Methacrylate
Synonyms: 2-Propenoic acid, 2-methyl-, 2-ethylhexyl ester; EHA
CAS Number: 688-84-6
Recommended Use: Raw material for production of polymers, industrial coatings, adhesives, sealants
Supplier Details: Name, address, contact number provided by the manufacturer or distributor, emergency telephone number available for 24/7 chemical emergencies
Restrictions: Not intended for food, drug, or cosmetic applications
GHS Classification: Flammable liquid (Category 3); Skin Irritant (Category 2); Eye Irritant (Category 2A); Skin Sensitizer (Category 1B); Acute Toxicity, Oral (Category 5)
Hazard Statements: Flammable liquid and vapor; Causes skin and eye irritation; May cause allergic skin reaction
Pictograms: Flame, Exclamation mark
Precautionary Statements: Keep away from heat sources, no smoking; Wear protective gloves and eye protection; Avoid breathing vapors or mist; Wash thoroughly after handling; Contaminated clothing should not be worn until washed
Signal Word: Warning
Emergency Overview: Colorless liquid with mild ester odor, vapors are heavier than air and may accumulate in low areas
Chemical Identity: 2-Ethylhexyl Methacrylate
Concentration: ≥99%
Impurities or Additives: Small amounts of methacrylic acid (<0.5%), polymerization inhibitors such as hydroquinone monomethyl ether (PPM)
Molecular Formula: C12H22O2
Molecular Weight: 198.31 g/mol
Inhalation: Move exposed person to fresh air; keep at rest in a position comfortable for breathing; seek medical attention if symptoms persist or breathing difficulty develops
Skin Contact: Immediately remove contaminated clothing, flush skin with plenty of water and soap for at least 15 minutes, seek medical advice if irritation or rash appears
Eye Contact: Rinse eyes with lukewarm water for at least 15 minutes, keep eyelids open, remove contact lenses if present and easy to do; seek immediate medical attention if irritation continues
Ingestion: Rinse mouth, do not induce vomiting, never give anything by mouth to an unconscious person, get medical help immediately
Most Important Symptoms: Redness, swelling, allergic reactions such as rash, respiratory irritation
Special Advice for Emergency Personnel: Use appropriate personal protective equipment; consult a medical doctor for prolonged exposure or severe symptoms
Suitable Extinguishing Media: Carbon dioxide, foam, dry chemical, water spray (do not use water jet directly)
Specific Hazards: May produce acrid smoke, carbon monoxide, and other toxic fumes under fire conditions; containers can explode in heat
Protective Equipment for Firefighters: Self-contained breathing apparatus, full protective clothing
Special Precautions: Cool exposed containers with water spray, prevent runoff from entering water supplies; remove material from fire area if it can be done safely
Personal Precautions: Keep unauthorized personnel away; ventilate area; wear gloves, eye and face protection, flame-resistant clothing
Environmental Precautions: Prevent spillage from entering drains, waterways, or soil; contain spill using non-combustible absorbent material such as sand, earth, or vermiculite
Cleanup Methods: Stop leak if it can be done safely, absorb with inert material, collect in appropriate closed chemical waste containers, decontaminate area with soap and water
Disposal: Dispose according to local, state, federal regulations, do not allow product to enter the environment
Handling: Use only outdoors or in a well-ventilated area, avoid inhaling vapors, avoid skin and eye contact; ground containers when transferring contents; use spark-proof tools
Storage: Store in tightly sealed original container in cool, well-ventilated place, away from sources of ignition, direct sunlight, oxidizing agents, strong acids, and bases
Temperature Limits: Store away from temperatures above 30°C to prevent polymerization
Special Instructions: Use inhibitors to prevent polymerization during storage, check expiry date of inhibitor regularly
Occupational Exposure Limits: No established OSHA PEL or ACGIH TLV, recommend limiting airborne concentration to minimum practical levels
Engineering Controls: Use local exhaust ventilation, maintain controls to minimize airborne concentrations
Personal Protective Equipment: Nitrile gloves, chemical-resistant apron, safety glasses with side shields or chemical goggles, face shield if splash risk exists, flame-resistant clothing
Respiratory Protection: Use an approved organic vapor respirator if exposure limits may be exceeded
Hygiene Practices: Wash hands after handling, remove contaminated clothing, ensure emergency eye wash and safety shower accessible in the work area
Appearance: Clear, colorless to yellowish liquid
Odor: Ester-like, mild odor
Odor Threshold: Data not available
pH: Not applicable
Melting Point: –65°C
Boiling Point: 221–224°C
Flash Point: 81°C (closed cup)
Evaporation Rate: Data not available
Flammability: Flammable liquid and vapor
Vapor Pressure: 0.18 mm Hg at 20°C
Vapor Density: 8.2 (air = 1)
Relative Density: 0.88–0.90 g/cm³ at 20°C
Solubility in Water: Practically insoluble (0.16 g/L at 20°C)
Partition Coefficient (log Kow): 4.5
Auto-ignition Temperature: 240°C
Decomposition Temperature: Not established
Viscosity: 3.2 mPa·s at 20°C
Chemical Stability: Stable with inhibitor at recommended conditions; instability may occur above 30°C, in the absence of inhibitor, or exposure to light
Reactivity: Reacts vigorously with strong oxidizers; polymerizes easily under heat, light, or without inhibitor
Hazardous Reactions: Uncontrolled polymerization may cause container rupture; releases heat and potentially toxic fumes
Incompatible Materials: Peroxides, azo compounds, strong acids and bases, oxidizing agents, reducing agents
Decomposition Products: Methacrylic acid, carbon oxides, smoke, and thermal decomposition products in fire
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Acute Effects: Skin and eye irritation, respiratory tract irritation, headache, dizziness, nausea, vomiting at high airborne concentrations
Chronic Effects: Prolonged or repeated exposure can cause dermatitis, skin sensitization, allergic skin reactions
Toxicity Data: Oral LD50 (rat): ~15,000 mg/kg; Dermal LD50 (rabbit): >5,000 mg/kg; Inhalation LC50 not well defined
Carcinogenicity: Not classified as carcinogenic by NTP, IARC, or OSHA
Mutagenicity / Reproductive Effects: No reliable data indicating mutagenic or reproductive effects in humans
Sensitization: May cause allergic skin reaction in predisposed individuals
Aquatic Toxicity: Moderately toxic to aquatic organisms; Fish LC50 (96 hr, Danio rerio): ~4.93 mg/L; Daphnia EC50 (48 hr): ~25 mg/L
Persistence and Degradability: Not readily biodegradable (limited data); persistent in aquatic environments
Bioaccumulation Potential: High due to log Kow (4.5); may accumulate in aquatic organisms
Mobility in Soil: Low mobility, strong adsorption to soils and sediments
Other Effects: Avoid release to environment; precautions advised for all stages from storage to disposal
Waste Disposal: Dispose of contents/container according to local, state, and federal regulations; incineration preferred if permitted
Container Disposal: Triple-rinse, puncture, and recycle or landfill at authorized site; containers that cannot be cleaned should be disposed of similarly to hazardous chemical waste
Precautions: Do not pour down drains, avoid environmental contamination, contact licensed waste disposal contractor for guidance
UN Number: UN1993
Proper Shipping Name: Flammable liquid, n.o.s. (contains 2-ethylhexyl methacrylate)
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: III
Environmental Hazards: Marine pollutant (according to criteria)
Special Precautions during Transport: Avoid heat, sunlight, and sources of ignition; ensure packaging remains tight and undamaged
TSCA: Listed in the US Toxic Substances Control Act Inventory
REACH: Registered under European Regulation (EC) No 1907/2006
OSHA Hazard Communication: Meets criteria for hazardous chemicals
SARA Title III, Section 313: Not subject to reporting
DSL/NDSL (Canada): Listed/Compliant
Other Labeling Requirements: Complies with GHS labeling, including pictograms and hazard statements
Local Requirements: Check state or country-specific chemical control regulations for additional restrictions or reporting obligations
