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2-Hydroxyethyl Methacrylate (2-HEMA)

Chemical name 2-HYDROXYETHYL METHACRYLATE, (2-HEMA)
Chemical formula

CH2=C(CH3)-COOCH2CH2OH

Concentration

97% or greater

CAS # 868-77-9
EINECS # 201-204-4
Inhibitor (MEHQ) 180-220 ppm
Chemical name 2-HYDROXYETHYL METHACRYLATE, (2-HEMA)
Chemical formula

CH2=C(CH3)-COOCH2CH2OH

Concentration

97% or greater

CAS # 868-77-9
EINECS # 201-204-4
Inhibitor (MEHQ) 180-220 ppm

2-Hydroxyethyl Methacrylate (2-HEMA)

2-Hydroxyethyl Methacrylate (2-HEMA) is an ester of Methacrylic acid and is used as a raw material component in the synthesis of polymers. The ester is the monomer that is used to make the polymer Poly(2-Hydroxyethyl Methacrylate). The polymer is hydrophobic; however, when the polymer is subjected to water it will swell due to the molecule’s hydrophilic pendant group. Depending on the physical and chemical structure of the polymer, it is capable of absorbing from 10 to 600% water relative to the dry weight. Because of this property, it was one of the first materials to be successfully used in the manufacture of soft contact lenses.