2-hydroxyethyl acrylate
CAS Number
818-61-1
EC Number
212-454-9
Abbreviation
HEA
What is 2-hydroxyethyl acrylate?
2-Hydroxyethyl acrylate (CAS 818-61-1), commonly abbreviated as HEA, is a reactive hydroxyl-functional monomer used to introduce pendant hydroxyl groups into polymer backbones. Also known as ethylene glycol monoacrylate.
Where is 2-hydroxyethyl acrylate used?
- UV-curable coatings and inks for printing and packaging: reactive diluent that reduces viscosity while contributing hydroxyl functionality to the cured network
- Adhesives and sealants: incorporated into acrylic pressure-sensitive adhesives to tune peel strength and cohesion through isocyanate or melamine crosslinking
- Waterborne and solvent-based coatings: comonomer improving substrate adhesion and coating flexibility without sacrificing crosslink density
- Polymer manufacturers use HEA to functionalize acrylic resins destined for two-component polyurethane systems.
Good to know: Typically stabilized with a polymerization inhibitor to maintain shelf stability during storage and transport.
Commercial specifications
- Purity specifications commonly at 96% or higher
- Bulk quantities in drums and IBC containers
- Inhibitor type and concentration often specified on request
Other Names (Synonyms)
Hydroxyethyl acrylate|2-Propenoic acid, 2-hydroxyethyl ester|Ethylene glycol monoacrylate|Bisomer 2HEA|2-(Acryloyloxy)ethanol|Ethylene glycol, acrylate|Acrylic acid, 2-hydroxyethyl ester|HEA
What are the physical properties of 2-hydroxyethyl acrylate?
Melting Point -60 °C
Boiling Point 220 °C
Density 1.011 g/cm³
Flash Point 209 °F
Appearance clear liquid
Color Yellow to brown
Form Oily Liquid
Water Solubility soluble
Vapor Pressure <0.1 mm Hg ( 20 °C)
Refractive Index n 20/D 1.45(lit.)
Log P -0.17 at 25℃
How is 2-hydroxyethyl acrylate classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS06· Toxic GHS09· Environmental Hazard GHS07· Irritant GHS08· Health Hazard
Hazard Statements
H302 Harmful if swallowed
H310 Fatal in contact with skin
H311 Toxic in contact with skin
H314 Causes severe skin burns and eye damage
Precautionary Statements
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P262 Do not get in eyes, on skin, or on clothing.
P264 Wash … thoroughly after handling.
Which trade and regulatory codes apply to 2-hydroxyethyl acrylate?
HS Code 29161290
UN Number 2927
ADR Class 6.1
Packing Group II
Storage Class 6.1A - Combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
WGK (Germany) 3