2-Hydroxyethyl methacrylate,CAS:868-77-9,H.S code:2916140090

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CAS:868-77-9,

2-Hydroxyethyl methacrylate (HEMA) is used in adhesives, coatings, inks, dental materials, contact lenses, hydrogels, and resins, providing adhesion, flexibility, chemical resistance, and reactive hydroxyl functionality for polymer crosslinking and surface modification.

CAS: 868-77-9

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2-Hydroxyethyl Methacrylate (HEMA) is a super useful functional acrylic monomer because it has both a polymerizable double bond and a hydrophilic hydroxyl (-OH) group. That combo makes it gold in many industries.

Here’s where it’s mainly used:

1. Coatings & Paints
HEMA improves:

Adhesion to metal, glass, and plastics
Hardness and chemical resistance
Crosslinking ability (reacts with isocyanates, melamine resins, etc.)
Used in:

Automotive coatings
Industrial protective coatings
UV-curable coatings
Wood finishes
The –OH group allows further chemical reaction, giving tougher films.

2. Dental Materials
One of HEMA’s biggest markets.

Used in:

Dental adhesives & bonding agents
Composite resins
Dental sealants
Why?

Good penetration into dentin
Forms strong polymer networks
Compatible with hydrophilic tooth structure

3. Contact Lenses (Hydrogels)
HEMA is a classic monomer for soft contact lenses.

Properties it provides:

Water absorption
Softness and flexibility
Oxygen permeability (when copolymerized)
Poly(HEMA) hydrogels were among the first soft lens materials.

4. Medical & Biomedical Polymers
Because it’s biocompatible when polymerized:

Used in:

Drug delivery hydrogels
Tissue engineering scaffolds
Wound dressings
Catheters and medical coatings
Hydrophilicity helps control water uptake and drug release.

5. Adhesives & Sealants
HEMA improves:

Wetting of surfaces
Adhesion to polar substrates
Flexibility + strength balance
Common in:

Pressure-sensitive adhesives
Structural acrylic adhesives

6. Textile & Paper Treatments
Used to modify surfaces for:

Better dye uptake
Water absorbency
Improved coating adhesion

7. UV / Radiation Curing Systems
HEMA is used in:

UV inks
3D printing resins
Electronic coatings
The double bond polymerizes fast under UV.

8. Copolymer Modifier
HEMA is often not used alone but to introduce –OH functionality into polymers like:

Acrylic resins
Styrene-acrylic emulsions
Polyester-modified systems
The hydroxyl group allows:

Crosslinking
Better pigment dispersion
Improved durability

Key Advantage Summary
Property
Benefit
Reactive double bond
Easy polymerization
Hydroxyl group
Crosslinking & adhesion
Hydrophilic
Water compatibility
Biocompatible polymer
Medical/dental use

More Information

SKU

868-77-9

EINECS

212-782-2

HS Code

2916140090

Formula

C6H10O3

Purity

98%

Application

Adhesives and Binders, Pharma & Personal Care, Textile, Dyeing，Leather & Detergent

Usage

TDS

Item	Specification	Result
Purity(%,GC)	≥97.00	98.07
EsterContent(%)	≥98.00	99.03
AcidValue(%)	≤1.50	0.02
WaterContent(%)	≤0.10	0.03
Chromaticity(Pt-CO)	≤20	12
MEHQPPm	150-1000	195