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2-Hydroxyethyl Methacrylate

CAS Number
868-77-9
EC Number
212-782-2
Chemical Formula
C6H10O3
Molecular Weight
130.14 g/mol

Description

2-Hydroxyethyl Methacrylate (CAS 868-77-9 ), commonly known as HEMA, is a hydroxyl-functional methacrylate monomer used to introduce reactive sites into polymer networks. Its pendant hydroxyl group enables controlled crosslinking, adhesion promotion, and compatibility with a broad range of resin systems across coatings, adhesives, and structural composites. In UV- and peroxide-cured coatings, HEMA acts as a reactive diluent and crosslinking co-monomer, improving film hardness and adhesion to metal and plastic substrates. It enhances chemical resistance in automotive and industrial finishes. Adhesive and sealant formulators incorporate it into acrylic and methacrylate systems where hydroxyl functionality supports bonding. This includes difficult substrates such as composites used in aerospace structures. Electronics manufacturers use HEMA-based resins in conformal coatings and encapsulants where controlled cure profiles are critical. In construction, it contributes to polymer-modified mortars and structural bonding adhesives where durability under mechanical and environmental stress is required for long-term performance. HEMA is supplied as a clear liquid, typically with an inhibitor added to prevent premature polymerization during storage and transport. Standard commercial grades are available for industrial use. Purity levels are commonly at 97% or higher. Technical and high-purity grades are offered depending on end-use sensitivity, particularly for electronics and optical applications. Contact us for supply of 2-Hydroxyethyl Methacrylate Request Quote

Other Names (Synonyms)

2-hydroxyethyl 2-methylprop-2-enoate | HEMA

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point-12 °C
Boiling Point205-208 °C
Density1.034 g/cm³ @ Temp: 25 °C
Flash Point207 °F
Appearancecolourless liquid
ColorClear
OdorEster like
FormLiquid
Water Solubilitysoluble
Vapor Pressure0.01 mm Hg ( 25 °C)
Refractive Indexn 20/D 1.453(lit.)
Log P0.42 at 25℃

Safety & Handling

Warning
GHS07· IrritantGHS08· Health Hazard

Hazard Statements

H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled

Precautionary Statements

P233Keep container tightly closed.
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P271Use only outdoors or in a well-ventilated area.
P272Contaminated work clothing should not be allowed out of the workplace.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P284In case of inadequate ventilation wear respiratory protection.
P321Specific treatment (see … on this label).
P403Store in a well-ventilated place.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P316Get emergency medical help immediately.
P364Take off contaminated clothing and wash it before reuse.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29161490
Storage Class10 - Combustible liquids
WGK (Germany)1