Hydroxypropyl methacrylate
CAS Number
27813-02-1
EC Number
248-666-3
Abbreviation
HPMA
What is Hydroxypropyl methacrylate?
Hydroxypropyl methacrylate (CAS 27813-02-1), abbreviated HPMA, is a reactive monomer used to build functional acrylic polymer systems. Also marketed as Rocryl 410.
Where is Hydroxypropyl methacrylate used?
- Coatings: reacts with isocyanates or melamine resins to produce two-component polyurethane and acrylic topcoats with defined cure profiles and film hardness
- Adhesives and sealants: improves substrate bonding and cohesive strength in structural and pressure-sensitive systems
- UV-curable printing inks and packaging coatings: reactive diluent that reduces viscosity while contributing to crosslink density
- Electronics: HPMA-based polymers in conformal coatings and encapsulants support adhesion to sensitive substrates and components
- It introduces hydroxyl groups into polymer backbones, enabling controlled crosslinking, adhesion tuning, and surface reactivity.
Good to know: Typically a mixture of the 2-hydroxypropyl and 1-methyl-2-hydroxyethyl isomers. Inhibitor content is specified to ensure storage stability.
Commercial specifications
- 97% purity
- Packaging ranges from drums to IBC containers
Other Names (Synonyms)
Propylene glycol monomethacrylate|Rocryl 410|1,2-Propanediol, monomethacrylate|UKW89XAX2X|1,2-Propanediol, 2-methyl, monomethacrylate|Methacrylic acid, monoester with 1,2-propanediol|2-Propenoic acid, 2-methyl-, 2-hydroxymethylethyl ester|RefChem:923164|HPMA
What are the physical properties of Hydroxypropyl methacrylate?
Melting Point -89 °C
Boiling Point 96 °C
Density 1.066 g/cm³ @ Temp: 25 °C
Flash Point 206 °F
Color Clear
Form Liquid
Water Solubility Soluble in water.
Vapor Pressure 0.05 mm Hg ( 20 °C)
Refractive Index n 20/D 1.447(lit.)
pH 6 (50g/l, H2O, 20℃)
Log P 0.97 at 20℃
How is Hydroxypropyl methacrylate classified and handled safely? Learn More
Warning
GHS07· Irritant
Hazard Statements
H317 May cause an allergic skin reaction
H319 Causes serious eye irritation
Precautionary Statements
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P272 Contaminated work clothing should not be allowed out of the workplace.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P321 Specific treatment (see … on this label).
Which trade and regulatory codes apply to Hydroxypropyl methacrylate?
HS Code 29161490
WGK (Germany) 1