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9003-20-7

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9003-20-7 Usage

Chemical Properties

Different sources of media describe the Chemical Properties of 9003-20-7 differently. You can refer to the following data:
1. transparent pellets or white powder
2. The degree of polymerization of polyvinyl acetate typically is 100 to 5000. The ester groups of the polyvinyl acetate are sensitive to base hydrolysis and will slowly convert PVAc into polyvinyl alcohol and acetic acid.Under alkaline conditions, boron compounds such as boric acid or borax cause the polymer to cross-link, forming tackifying precipitates or slime.

History

Polyvinyl acetate was discovered in Germany in 1912 by Fritz Klatte. The monomer, vinyl acetate, was first produced on an industrial scale by addition of acetic acid to acetylene with a mercury(I) salt[3] but it is now primarily made by palladium catalyzed oxidative addition of acetic acid to ethylene.

Uses

Different sources of media describe the Uses of 9003-20-7 differently. You can refer to the following data:
1. As an emulsion in water, aPVAc emulsions are used as adhesives for porous materials, particularly for wood, paper, and cloth, and as a consolidant for porous building stone, in particular sandstone . Uses : As wood glue PVAc is known as "white glue" and the yellow "carpenter's glue" or PVA glue. As paper adhesive during paper packaging converting In bookbinding and book arts, due to its flexible strong bond and non-acidic nature (unlike many other polymers). The use of PVAC on the Archimedes Palimpsest during the 20th century greatly hindered the task of disbinding the book and preserving and imaging the pages in the early 21st century, in part because the glue was stronger than the parchment it held together.The stiff homopolymer PVAc, but mostly the more soft copolymer a combination of vinyl acetate and ethylene, vinyl acetate ethylene (VAE), is used also in paper coatings, paint and other industrial coatings, as binder in nonwovens in glass fibers. sanitary napkins, filter paper and in textile finishing PVAc can also be used as coating to protect cheese from fungi and humidity. Polyvinyl acetate is also the raw material to make other polymers like : Polyvinyl alcohol -[HOCHCH2]-: Polyvinyl acetate is partially or completely hydrolysed to give polyvinyl alcohol. This reversible saponification and esterification reaction was a strong hint for Hermann Staudinger in the formulation of his theory of macro molecules. Polyvinyl acetate phthalate (PVAP): Polyvinyl acetate is partially hydrolyzed and then esterified with phthalic acid.
2. Polyvinyl acetate is used as an adhesive for porous materials such as wood, paper, cloth and in handicrafts. It also finds application as a primer for drywall, as wallpaper adhesive, as the film-forming ingredient in water-based (latex) paints and as an envelope adhesive. It is used as a raw material for the preparation of other polymers like polyvinyl alcohol and polyvinyl acetate phthalate (PVAP). It plays an important role in the lamination of metal foils.
3. drug delivery, hemodynamics, wound dressing, coatings

Definition

ChEBI: A polymer composed of repeating acetoxyethylene units.

Preparation

PVAc is a vinyl polymer. Polyvinyl acetate is prepared by polymerization of vinyl acetate monomer (free radical vinyl polymerization of the monomer vinyl acetate).

Production Methods

Polyvinyl acetate is derived from the polymerization of vinyl acetate; the catalysts used in polymerization may include hydrogen peroxide, peroxy sulfates, or various redox combinations. The polymerization process is described as being carried out by charging all ingredients to the reactor, heating to reflux, and stirring until the reaction is complete. Typically, only a part of the monomer and catalyst is initially charged; the remainder is added during the course of the reaction.

General Description

Poly(vinyl acetate) [PVAc] is a biocompatible and biodegradable polymer as it has hydrolyzable groups in the side chain,also it is non-toxic and non-carcinogenic.Owing to its biologically friendly nature , it is used in various biomedical application such as artificial organ implant, contact lens,cardiovascular devices and cartilage skin. It is also used in wound dressing and various drug-delivery applications. It has been accepted as reference standard for universal calibration in gel permeation chromatography.

Hazard

Questionable carcinogen.

Industrial uses

Polyvinyl acetate is a leathery, colorless thermoplasticmaterial that softens at relatively lowtemperatures and that is relatively stable to lightand oxygen. The polymers are clear and noncrystalline.The chief applications of polyvinylacetate are as adhesives and binders for waterbasedor emulsion paints. Vinyl acetate is conveniently prepared bythe reaction of acetylene with acetic acid.

Safety Profile

Very low toxicity by ingestion. Questionable carcinogen. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS

Purification Methods

Precipitate it from acetone by addition of n-hexane.

Check Digit Verification of cas no

The CAS Registry Mumber 9003-20-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,0 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 9003-20:
(6*9)+(5*0)+(4*0)+(3*3)+(2*2)+(1*0)=67
67 % 10 = 7
So 9003-20-7 is a valid CAS Registry Number.
InChI:InChI=1/C4H6O2/c1-3-4(5)6-2/h3H,1H2,2H3

9003-20-7 Well-known Company Product Price

  • Brand
  • (Code)Product description
  • CAS number
  • Packaging
  • Price
  • Detail
  • Alfa Aesar

  • (A12732)  Polyvinyl acetate, M.W. ca 50,000   

  • 9003-20-7

  • 100g

  • 275.0CNY

  • Detail
  • Alfa Aesar

  • (A12732)  Polyvinyl acetate, M.W. ca 50,000   

  • 9003-20-7

  • 500g

  • 1102.0CNY

  • Detail
  • Alfa Aesar

  • (A12732)  Polyvinyl acetate, M.W. ca 50,000   

  • 9003-20-7

  • 2500g

  • 3726.0CNY

  • Detail
  • Sigma-Aldrich

  • (182508)  Poly(vinylacetate)  analytical standard, molecular weight series

  • 9003-20-7

  • 182508-1SET

  • 4,250.61CNY

  • Detail
  • Sigma-Aldrich

  • (Y0000792)  Poly(vinyl acetate) dispersion 30 per cent  European Pharmacopoeia (EP) Reference Standard

  • 9003-20-7

  • Y0000792

  • 1,880.19CNY

  • Detail
  • Sigma-Aldrich

  • (Y0001557)  Poly(vinylacetate)  European Pharmacopoeia (EP) Reference Standard

  • 9003-20-7

  • Y0001557

  • 1,880.19CNY

  • Detail
  • USP

  • (1548032)  Polyvinyl acetate  United States Pharmacopeia (USP) Reference Standard

  • 9003-20-7

  • 1548032-1G

  • 4,662.45CNY

  • Detail
  • Aldrich

  • (189480)  Poly(vinylacetate)  average Mw ~100,000 by GPC, beads

  • 9003-20-7

  • 189480-25G

  • 609.57CNY

  • Detail
  • Aldrich

  • (189480)  Poly(vinylacetate)  average Mw ~100,000 by GPC, beads

  • 9003-20-7

  • 189480-500G

  • 1,946.88CNY

  • Detail
  • Aldrich

  • (189480)  Poly(vinylacetate)  average Mw ~100,000 by GPC, beads

  • 9003-20-7

  • 189480-1KG

  • 3,011.58CNY

  • Detail
  • Aldrich

  • (387924)  Poly(vinylacetate)  average Mw ~140,000 by GPC

  • 9003-20-7

  • 387924-500G

  • 1,566.63CNY

  • Detail
  • Aldrich

  • (387932)  Poly(vinylacetate)  average Mw ~500,000 by GPC

  • 9003-20-7

  • 387932-500G

  • 1,614.60CNY

  • Detail

9003-20-7SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name poly(vinyl acetate)

1.2 Other means of identification

Product number -
Other names poly(1-acetoxyethylene)

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:9003-20-7 SDS

9003-20-7Relevant articles and documents

Catalytic Hydrogenation of Trivinyl Orthoacetate: Mechanisms Elucidated by Parahydrogen Induced Polarization

Pravdivtsev, Andrey N.,Brahms, Arne,Kienitz, Stephan,S?nnichsen, Frank D.,H?vener, Jan-Bernd,Herges, Rainer

, p. 370 - 377 (2021/02/09)

Parahydrogen (pH2) induced polarization (PHIP) is a unique method that is used in analytical chemistry to elucidate catalytic hydrogenation pathways and to increase the signal of small metabolites in MRI and NMR. PHIP is based on adding or exchanging at least one pH2 molecule with a target molecule. Thus, the spin order available for hyperpolarization is often limited to that of one pH2 molecule. To break this limit, we investigated the addition of multiple pH2 molecules to one precursor. We studied the feasibility of the simultaneous hydrogenation of three arms of trivinyl orthoacetate (TVOA) intending to obtain hyperpolarized acetate. It was found that semihydrogenated TVOA underwent a fast decomposition accompanied by several minor reactions including an exchange of geminal methylene protons of a vinyl ester with pH2. The study shows that multiple vinyl ester groups are not suitable for a fast and clean (without any side products) hydrogenation and hyperpolarization that is desired in biochemical applications.

PROCESS TO PRODUCE ETHYLENE AND VINYL ACETATE MONOMER AND DERIVATIVES THEREOF

-

Page/Page column 57-59, (2019/10/04)

A method that includes (a) providing a stream containing ethane and oxygen to an ODH reactor; (b) converting a portion of the ethane to ethylene and acetic acid in the ODH reactor to provide a stream containing ethane, ethylene, acetic acid, oxygen and carbon monoxide; (c) separating a portion of the acetic acid from the stream to provide an acetic acid stream and a stream containing ethane, ethylene, oxygen and carbon monoxide; (d) providing the stream to a CO Oxidation Reactor containing a catalyst that includes a group 11 metal to convert carbon monoxide to carbon dioxide and reacting acetylene to produce a stream containing ethane, ethylene and carbon dioxide; and (e) providing a portion of the stream and a portion of the acetic acid stream to a third reactor containing a catalyst that includes a metal selected from group 10 and group 11 metals to produce vinyl acetate.

HIGH PORE VOLUME ALUMINA SUPPORTED CATALYST FOR VINYL ACETATE MONOMER (VAM) PROCESS

-

Paragraph 0082-0084, (2018/05/26)

Disclosed is a supported catalyst for the preparation of vinyl acetate monomer (VAM), a process for preparing a catalyst comprising an extruded alumina support, and a catalytic process for the manufacturing vinyl acetate using the supported catalyst. Specifically, it is shown that for activated palladium-gold VAM catalysts prepared using extruded alumina supports, enhanced performance is demonstrated with increased pore volume of the support, and the gas hourly space velocity (GHSV, hr?1), which was found to significantly increase the space time yield as GHSV increased as compared to the non-extruded alumina supported catalysts.

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