天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

POLY(VINYL ACETATE)

POLY(VINYL ACETATE) Struktur
9003-20-7
CAS-Nr.
9003-20-7
Englisch Name:
POLY(VINYL ACETATE)
Synonyma:
PVAc;v501;pvae;Kollicoat? SR 30 D;ts2;ps3h;d50m;ayaa;ayaf;ayjv
CBNumber:
CB3700594
Summenformel:
C4H6O2
Molgewicht:
86.08924
MOL-Datei:
9003-20-7.mol

POLY(VINYL ACETATE) Eigenschaften

Schmelzpunkt:
60°C
Siedepunkt:
70-150 °C
Dichte
1.18 g/mL at 25 °C
Tg
33
Tg
43
Tg
44
Brechungsindex
n20/D 1.467
Flammpunkt:
>100℃
storage temp. 
2-8°C
L?slichkeit
ketones, ethers and aromatic hydrocarbons: soluble
Aggregatzustand
pellets
Farbe
Clear
PH
3.0-5.5
Stabilit?t:
Stable. Incompatible with strong oxidizing agents, strong bases. Combustible.
IARC
3 (Vol. 19, Sup 7) 1987
EPA chemische Informationen
Polyvinyl acetate (9003-20-7)
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
R-S?tze: 45-46
S-S?tze: 24/25
WGK Germany  3
RTECS-Nr. AK0920000
TSCA  Yes
HS Code  39051900
Giftige Stoffe Daten 9003-20-7(Hazardous Substances Data)
Toxizit?t LD50 oral in mouse: > 25gm/kg
Bildanzeige (GHS) GHS hazard pictograms
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H302 Gesundheitssch?dlich bei Verschlucken. Akute Toxizit?t oral Kategorie 4 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P270, P301+P312, P330, P501
H315 Verursacht Hautreizungen. Hautreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P302+P352, P321,P332+P313, P362
H319 Verursacht schwere Augenreizung. Schwere Augenreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P305+P351+P338,P337+P313P
H332 Gesundheitssch?dlich bei Einatmen. Akute Toxizit?t inhalativ Kategorie 4 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P261, P271, P304+P340, P312
Sicherheit
P264 Nach Gebrauch gründlich waschen.
P264 Nach Gebrauch gründlich waschen.
P270 Bei Gebrauch nicht essen, trinken oder rauchen.
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
P301+P312 BEI VERSCHLUCKEN: Bei Unwohlsein GIFTINFORMATIONSZENTRUM/Arzt/... (geeignete Stelle für medizinische Notfallversorgung vom Hersteller/Lieferanten anzugeben) anrufen.
P302+P352 BEI BERüHRUNG MIT DER HAUT: Mit viel Wasser/... (Hersteller kann, falls zweckm??ig, ein Reinigungsmittel angeben oder, wenn Wasser eindeutig ungeeignet ist, ein alternatives Mittel empfehlen) waschen.
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach M?glichkeit entfernen. Weiter spülen.
P321 Besondere Behandlung
P330 Mund ausspülen.
P332+P313 Bei Hautreizung: ?rztlichen Rat einholen/?rztliche Hilfe hinzuziehen.
P501 Inhalt/Beh?lter ... (Entsorgungsvorschriften vom Hersteller anzugeben) zuführen.

POLY(VINYL ACETATE) Chemische Eigenschaften,Einsatz,Produktion Methoden

R-S?tze Betriebsanweisung:

R45:Kann Krebs erzeugen.
R46:Kann vererbbare Sch?den verursachen.

S-S?tze Betriebsanweisung:

S24/25:Berührung mit den Augen und der Haut vermeiden.

Chemische Eigenschaften

transparent pellets or white powder

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.

Verwenden

drug delivery, hemodynamics, wound dressing, coatings

Definition

ChEBI: A polymer composed of repeating acetoxyethylene units.

Vorbereitung Methode

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.

synthetische

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

Allgemeine Beschreibung

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.

Industrielle Verwendung

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.

Sicherheitsprofil

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

l?uterung methode

Precipitate it from acetone by addition of n-hexane.

POLY(VINYL ACETATE) Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


POLY(VINYL ACETATE) Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 251)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
XIAMEN AMITY INDUSTRY AND TRADE CO., LTD.
+8618950047208
ellena@amitychem.com China 1176 58
Hebei Mojin Biotechnology Co., Ltd
+86 13288715578 +8613288715578
sales@hbmojin.com China 12835 58
Hebei Yanxi Chemical Co., Ltd.
+8617531190177
peter@yan-xi.com China 5857 58
Hebei Weibang Biotechnology Co., Ltd
+8617732866630
bess@weibangbio.com China 18151 58
Henan Bao Enluo International TradeCo.,LTD
+86-17331933971 +86-17331933971
deasea125996@gmail.com China 2472 58
Hebei Zhuanglai Chemical Trading Co.,Ltd
+8613343047651
admin@zlchemi.com China 3002 58
Hebei Longbang Technology Co., LTD
+86-18633929156 +86-18633929156
admin@hblongbang.com China 941 58
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512
info@tianfuchem.com China 21634 55
career henan chemical co
+86-0371-86658258 +8613203830695
sales@coreychem.com China 29880 58
Xiamen AmoyChem Co., Ltd
+86-86-5926051114 +8618959220845
sales@amoychem.com China 6383 58

9003-20-7()Verwandte Suche:


  • mowilith50
  • mowilith70
  • mowilith90
  • mowilithd
  • mowilithdv
  • mowilithm70
  • national120-1207
  • nationalstarch1014
  • ns2842
  • om100
  • or1500
  • p-170
  • pioloformf
  • plyamul40-155
  • plyamul40-350
  • polisols-3
  • polyco117fr
  • polyco2116
  • polyco2134
  • polyco953
  • polyfoxp20
  • polyfoxpo
  • polysol1000
  • polysol1000ax
  • polysol1200
  • VINAC 1000 DEV
  • VINAC 285
  • VINAC 9100
  • VINAC 911
  • VINAC XX-210
  • VINAC XX-230
  • VINAC XX-240
  • Vinyl acetate emulsion adhesive,series
  • POLY(VINYL ACETATE) USP
  • Polyvinyl Acetate (1 g)
  • Poly(vinyl acetate), approx. M.W. 170,000 500GR
  • Poly(vinyl acetate), approx. M.W. 170,000
  • Poly(vinyl acetate), approx. M.W. 100,000
  • Polyvinyl acetate, MW ≈ 50,000
  • Poly(vinyl acetate), Average M.W. 101600
  • Poly(vinyl acetate) average Mw ~100,000 by GPC, beads
  • Poly(vinyl acetate) average Mw ~500,000 by GPC
  • Poly(vinyl acetate) dispersion
  • Poly(vinyl acetate) dispersion 30 %
  • Poly(vinyl acetate) stabilized with polyvinylpyrrolidone and sodium lauryl sulfate
  • Polyvinyl acetate stabilized with povidone and sodium lauryl sulfate
  • Poly(vinyl acetate) average Mw ~140,000 by GPC
  • NINHYDRIN SOLUTION PHE
  • polysolps10
  • polysols5
  • polysols6
  • protex(polymer)
  • ps3h
  • r10688
  • raviflex43
  • resyn25-1014
  • resyn25-1025
  • rhodopas
Copyright 2019 ? ChemicalBook. All rights reserved