2-Hydroxyethyl Methacrylate (HEMA 98.5%, CAS 868-77-9) is a clear colourless liquid functional acrylic monomer stabilized with MEHQ, available in industrial and optical grades for hydrogel, acrylic resin, coating and contact lens raw material. TNJ Chemical is the key manufacturer and exporter since from 2001 in China. We guarantee high quality, competitive price, stable supply, fast delivery and tech support etc. To find more, please contact sales@tnjchem.com
Product Information
Chemical Name 2-Hydroxyethyl Methacrylate
Abbreviation HEMA / 2-HEMA
CAS No. 868-77-9
Molecular Formula C₆H₁₀O₃
Molecular Weight 130.14
EINECS No. 212-782-2
UN Number UN 1760Hazard Class 8 (Corrosive & irritant)
Chemphysical Properties
Appearance: Colourless transparent oily liquid
Odor: Mild characteristic ester odor
Density: 1.073 g/cm³ at 20℃
Refractive Index: 1.450–1.452
Boiling Point: 212℃
Flash Point: 101℃Solubility: Miscible with water, alcohols and most organic solvents
Stabilizer: MEHQ (200±50 ppm, adjustable)
Polymerization risk: Easy to polymerize under heat, light or initiator
Quality Specification
| Item | Specification (98% Grade) |
|---|---|
| Appearance | Colourless transparent liquid |
| Purity (GC) | ≥98.0% |
| Color (Pt-Co) | ≤20 |
| Water Content | ≤0.10% |
| Free Acid (as Methacrylic acid) | ≤0.10% |
| Inhibitor (MEHQ) | 200±50 ppm |
Use & Application
HEMA is a widely used hydroxyl-containing acrylic monomer. It is the core raw material for soft contact lenses and medical hydrogel materials. It is also applied in UV-curable coatings, acrylic resins, adhesives, dental composite materials, textile finishing agents and polymer modification. It introduces hydroxyl groups into polymer chains to improve adhesion, hydrophilicity and crosslinking performance.
Packing
200kg blue HDPE plastic drum; IBC tank and ISO tank available upon request. Customized packing can be arranged.
Delivery & Storage
Store in cool, dry, well-ventilated warehouse, recommended storage temperature 15–25℃. Keep away from direct sunlight, heat sources, oxidants and free radical initiators. Avoid high temperature to prevent spontaneous polymerization. Keep containers tightly closed. Transport as UN1760 corrosive substance, avoid strong collision. Shelf life 6 months under proper storage.
chemical.tnj
+8618949823763
tnjchem
2881500864