BGC > Produktsuche > HEMA | 868-77-9

content	≥ 98.5%
free acid	≤ 0.1%
polymerization inhibitor	200±20PPM
Colour	≤ 20#
Moisture	≤ 0.2%

Content	≥ 98.5%
free acid	≤ 0.1%
polymerization inhibitor	200±20PPM
Colour	≤ 20
Moisture	≤ 0.2%

Molecular Formula: C6H10O3
Molecular Weight: 130.14
Hazard Symbols: Xi
WGKGermany: 1
HS Code: 29161490

EC No: 212-782-2
Industry: Coatings Adhesives Sealants, Resins

Synonyms:
HEMA, 2-HEMA

Appearance: Colorless and transparent liquid

Purity: ≥97.0%

Free acid(As AA): ≤0.30%

Water: ≤0.30%

Chroma: ≤30

Inhibitor(PPM): 200±40

Appearance Colorless transparent liquid

HEMA Content (by GC),% ≥ 98.0

Color (APHA) ≤ 30

Residual Acid (as MAA),% ≤ 0.3

Water Content (w/w),% ≤ 0.2

Inhibitor Content (MEHQ),ppm 200± 20

Assay: 99%

Purity: 97% (stabilized with MEHQ)
Smile code: CC(C(OCCO)=O)=C
MDL Number: MFCD00002863
MolFormula: C6H10O3
MolWeight: 130.1418
Available in stock: 142839.9

Smile code:
CC(C(OCCO)=O)=C
MDL Number:
MFCD00002863
Purity :
97% (stabilized with MEHQ)
Available in stock:
112834.9 g

Molecular formula: C6H10O3
Molecular weight: 130.14
EINECS: 212-782-2
Organic monomer; acrylic monomer; non-aqueous solvent; Synthesis of intermediates; Methacrylic acid monomer; Ultra-dry solvent
Mol file: 868-77-9.mol


Melting point -12 ° C
Boiling point 67 ° C3.5 mm Hg (lit.)
Density 1.073 g / mL at 25 ° C (lit.)
Vapor density 5 (vs air)
Vapor pressure 0.01 mm Hg (25 ° C)
Refractive index n20 / D 1.453 (lit.)
Flash point 207 ° F
Storage conditions 2-8 ° C
Water - soluble
Sensitivity Air Sensitive

Chemical properties Colorless, transparent and easily flowing liquid. Soluble in common organic solvents. Miscible with water.
Use Mainly used for the modification of resin and coating. With other acrylic monomer copolymerization, can be obtained side chain containing active hydroxyl acrylic resin, can be esterification and cross-linking reaction, the synthesis of insoluble resin and improve the adhesion, can be used as fiber treatment agent. And melamine-formaldehyde (or urea-formaldehyde) resin, epoxy resin and other common reaction, used in the manufacture of two-component coating. Add advanced car paint, can be maintained long-term mirror gloss. Also be used as synthetic textiles and adhesives and other medical polymer monomer.
It is also used in photopolymerization resins, printing plates, inks, gels (contact lenses) and coating materials for the canned goods. It can be used for transmission electron microscopy (TEM) and optical microscopy (LM) embedding reagents, especially for the `sensitive antigen sites,` the hydration of the sample. GMA monomer white water-like, sticky, thinner than water, than any resin and monomer are easy to penetrate. Especially for use in bone, cartilage and difficult to penetrate plant tissue.
Use Plastic industry for the manufacture of hydroxy-containing acrylic resin. Paint industry and epoxy resin, diisocyanate, melamine formaldehyde resin configuration for the preparation of two-component coating. Grease industry for lubricating oil additives. The electronic industry for the electron microscope of dehydration. The textile industry for the manufacture of fabric adhesive. Analytical chemistry as a chemical reagent. In addition, also used for water-miscible embedding agent for the synthesis of medical polymer materials, thermosetting coatings and adhesives.
Uses Mainly used in the manufacture of thermosetting coatings, fiber processing agents, adhesives, photosensitive resin and medical polymer materials
Production methods 1 from ethylene oxide and methacrylic acid reaction derived. In the methacrylic acid by adding iron thiocyanate, tetramethyl ammonium chloride and a little hydroquinone, heated to 90 ° C stirring, under nitrogen protection, access to ethylene oxide gas reaction of about 2h. The reaction product cooled to 60 ° C, add a small amount of hydroquinone after vacuum distillation, collection 86-89 ° C (0.67kPa) fractions derived products, the yield of 80%. 2. Potassium methacrylate and chlorohydrin in the presence of inhibitor polymerization reaction of crude 2-hydroxy ethyl methacrylate, the salt, refined in the finished product.