2-Hydroxyethyl methacrylate CAS#: 868-77-9; ChemWhat Code: 55281

IdentificationPhysical DataSpectra
Route of Synthesis (ROS)Safety and HazardsOther Data

Identification

Product Name2-Hydroxyethyl methacrylate
IUPAC Name2-hydroxyethyl 2-methylprop-2-enoate
Molecular StructureStructure-of-HEMA-CAS-868-77-9
CAS Registry Number 868-77-9
EINECS Number212-782-2
MDL NumberMFCD00002863
Beilstein Registry Number1071583
Synonyms2-methyl-2-propenoic acid 2-hydroxyethyl ester, 2-Hydroxyethyl methacrylate, ethylene glycol monomethacrylate
Molecular FormulaC2H5N3O2
Molecular Weight103.081
InChIInChI=1S/C2H5N3O2/c3-1(6)5-2(4)7/h(H5,3,4,5,6,7)
InChI KeyWOBHKFSMXKNTIM-UHFFFAOYSA-N
Canonical SMILESCC(=C)C(=O)OCCO
Patent Information
Patent IDTitlePublication Date
CN109704989 A phthalic nitrile acrylic ester monomer synthesis method (by machine translation) 2019
KR2019/47223 PHOTO CURABLE ISOSORBIDE DERIVATIVE COMPOUND AND METHOD FOR PREPARING THE SAME 2019
JP2018/62507 Compound, resin, and a method for manufacturing a resist pattern a resist composition (by machine translation) 2018
CN105153223 For 3 D SLA printing of the phosphorus-containing acrylate prepolymer and its preparation method (by machine translation) 2018
US2017/145216 RHODAMINE-BASED COLORING COMPOSITION 2017
JP6093949 The benzotriazole derivative compound and polymer (by machine translation) 2017
WO2016/46292 LIQUID THIOETHER CARBOXYLIC ACID ESTERS 2016
US8791290 Acetal compound, polymer, resist composition, and patterning process 2014
US2004/171867 Reactive monomer composition modified by a small-amount of lactones, an acrylic polyol resin, a curable resin composition, and a coating composition 2004

Physical Data

AppearanceColorless transparent flowable liquid
Water Solubilitysoluble
Refractive indexn20/D 1.453(lit.)
SensitivityAir Sensitive
Boiling Point, °C Pressure (Boiling Point), Torr
86 – 88 5.0255
83 – 85 20
875
803
794
226
11520
794.00008
553
75 – 76 2
103 13
Density, g·cm-3Measurement Temperature, °C
1.0486 – 1.0671 24.99 – 44.99
1.0486 – 1.067125-45
1.0486 – 1.0747 15-45
1.077 20
1.0715 20
1.0678 20
1.07920
1.0712 20
Refractive Index Wavelength (Refractive Index), nm Temperature (Refractive Index), °C Comment (Refractive Index)
1.45 589 20
diagram. Object(s) of Study: temperature dependence
1.4481 58920
1.4515 58920
1.4451 58920
1.4527 58920
Description (Association (MCS))Original string
GC (Gas chromatography) HEMA 14.86 minutes
GC (Gas chromatography)
Description (Compressibility) Comment (Compressibility)
Adiabatic compressibility diagram. Object(s) of Study: temperature dependence
Dynamic Viscosity, P Temperature (Dynamic Viscosity), °C Comment (Dynamic Viscosity)
0.03181 – 0.05784 24.99 – 44.99
0.03181 – 0.05784 25-45
0.03181 – 0.08234 15-45
diagram. Object(s) of Study: temperature dependence
0.05784 – 31.81 25-45
Description (Transport Phenomena (MCS))Temperature (Transport Phenomena (MCS)), °CPartner (Transport Phenomena (MCS))
Dynamic viscosity 25 – 45 cyclohexanone
Dynamic viscosity 25 – 45 propylene glycol methyl ether acetate
Dynamic viscosity 25 – 45 ethyl 3-ethoxypropionate
Dynamic viscosity 25H2O
Dynamic viscosity 80H2O
Description (Liquid/Solid Systems (MCS)) Partner (Liquid/Solid Systems (MCS))
Glass transition temperature(s) D-glucose, (2R,3R,4S,5S,6R)-2-Ethoxy-6-hydroxymethyl-tetrahydro-pyran-3,4,5-triol, propyl β-D-glucopyranoside, propan-1-ol
Glass transition temperature(s) D-Galactose, 1-O-ethyl-β-D-galactopyranoside, n-propyl-β-D-galactopyranoside
Description (Liquid/Vapour Systems (MCS)) Pressure (Liquid/Vapour Systems (MCS)), Torr Partner (Liquid/Vapour Systems (MCS))
Boiling points of mixtures 20627.1 – 157816 carbon dioxide
Critical temperature
Critical pressure
Description (Mechanical & Physical Properties (MCS))Temperature (Mechanical & Physical Properties (MCS)), °C Comment (Mechanical & Physical Properties (MCS)) Partner (Mechanical & Physical Properties (MCS))
Volume change on mixing 35 diagram cyclohexanone
Volume change on mixing 15-45butan-1-ol
Volume change on mixing 35 diagram ethyl 3-ethoxypropionate
Description (Sound Properties) Comment (Sound Properties)
Hypersonic velocity diagram. Object(s) of Study: temperature dependence

Spectra

Description (NMR Spectroscopy)Nucleus (NMR Spectroscopy)Solvents (NMR Spectroscopy)Temperature (NMR Spectroscopy), °C Frequency (NMR Spectroscopy), MHz
Chemical shifts,Spectrum 1Hd(4)-methanol 25500
Chemical shifts,Spectrum1Hdimethylsulfoxide-d6
Chemical shifts ,Spectrum1Hchloroform-d1
Chemical shifts ,Spectrum13Cchloroform-d1
Chemical shifts 13C chloroform-d1
Chemical shifts 1H chloroform-d1 200
Chemical shifts 1H CCl4 20-26
2-Hydroxyethyl methacrylate CAS 868-77-9 NMR2-Hydroxyethyl methacrylate CAS 868-77-9 NMR
Description (IR Spectroscopy)Solvent (IR Spectroscopy)Temperature (IR Spectroscopy), °CComment (IR Spectroscopy)
ATR (attenuated total reflectance), Bands, Spectrum
Bands, Spectrumpotassium bromide
Intensity of IR bands, Bands, Spectrum 20
Bands potassium bromide
Bands, Spectrum film
Spectrum CCl4 253200 – 1800 cm**(-1)
2-Hydroxyethyl methacrylate CAS 868-77-9 IR2-Hydroxyethyl methacrylate CAS 868-77-9 IR
2-Hydroxyethyl methacrylate CAS 868-77-9 Raman2-Hydroxyethyl methacrylate CAS 868-77-9 Raman
Description (UV/VIS Spectroscopy)Solvent (UV/VIS Spectroscopy)Comment (UV/VIS Spectroscopy)Absorption Maxima (UV/VIS), nm
207, 259
Description (Raman Spectroscopy) Solvent (Raman Spectroscopy) Comment (Raman Spectroscopy)
Bands, Spectrum

Route of Synthesis (ROS)

Route of Synthesis (ROS) of 2-Hydroxyethyl methacrylate CAS 868-77-9
ConditionsYield
With triethanolamine; poly(ferric methacrylate); choline chloride In water at 30 – 66℃; for 5.53h;

Experimental Procedure
A mixed solution (solution C) of 2.79 g (0.019 mol) of choline chloride and 0.93 g (0.049 mol) of water was prepared at room temperature. Furthermore, a solution (solution D) of 2.98 g (0.020 mol) of triethanolamine and 0.053 g of a benzyl ester form of HO-TEMPO as a polymerization inhibitor dissolved in 61.0 g (0.709 mol) of methacrylic acid (MAA) was prepared at room temperature. Subsequently, the solution C and the solution D were introduced into a 1-L pressurized reactor made of SUS, and then 427.9 g of the iron(III) methacrylate solution obtained in Example 21 was introduced into the pressurized reactor made of SUS. While this mixed solution was stirred, 30 g (0.68 mol) of ethylene oxide (EO) was added dropwise thereto over 7 minutes at 30°C, and subsequently, 300 g (6.81 mol) of EO was added dropwise thereto over 115 minutes at 66°C. This reaction liquid was stirred for 3.5 hours at 66°C, and then was cooled to 50°C. The EO remaining in the reaction liquid was removed under reduced pressure (11.3 kPa) over 1.5 hours. As a result, a 2-hydroxyethyl methacrylate solution in which the amount of residual methacrylic acid in the liquid was 0.4percent by mass, the amount of ethylene glycol dimethacrylate produced as a side product was 1.0percent by mass, and the amount of diethylene glycol monomethacrylate was 5.4percent by mass, was obtained. At this time, the reaction yield of 2-hydroxyethyl methacrylate was 93.9percent (on the basis of the moles of the raw material methacrylic acid).
A 93.9%
B n/a

Safety and Hazards

Pictogram(s)exclamation-mark
SignalWarning
GHS Hazard StatementsH315: Causes skin irritation [Warning Skin corrosion/irritation]
H317: May cause an allergic skin reaction [Warning Sensitization, Skin]
H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]
Precautionary Statement CodesP261, P264, P272, P280, P302+P352, P305+P351+P338, P321, P332+P313, P333+P313, P337+P313, P362, P363, and P501
(The corresponding statement to each P-code can be found at the GHS Classification page.)

Other Data

TransportationNot dangerous goods
Under the room temperature and away from light
HS Code294200
StorageUnder the room temperature and away from light
Shelf LifeNo data vailable
Market PriceNo data vailable
Use Pattern
2-Hydroxyethyl methacrylate CAS#: 868-77-9 can be used in cosmetics/dental/toilet
Adhesion promoter in dental restorative composition
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A composition for forming a coating on a nail in combination with a curable resin, a photoinitiator, and a chemical filter capable of absorbing ultraviolet (UV) radiation and reducing exotherm
Curable monomer for fiber-reinforce composites used for dental applications
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Monomer in a matrix controlled diffusion drug delivery systems for treating retinitis pigmentosa

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