1,4-Butanediol dimethacrylate Struktur

Tetramethylendimethacrylat

Bezeichnung:Tetramethylendimethacrylat

CAS-Nr2082-81-7

Englisch Name:1,4-Butanediol dimethacrylate

CBNumberCB8418016

SummenformelC12H18O4

Molgewicht226.27

MOL-Datei2082-81-7.mol

Synonyma

Tetramethylendimethacrylat

Tetramethylendimethacrylat physikalisch-chemischer Eigenschaften

Schmelzpunkt	−117 °C(lit.)
Siedepunkt	132-134 °C/4 mmHg (lit.)
Dichte	1.023 g/mL at 25 °C (lit.)
Dampfdichte	2.09 (vs air)
Dampfdruck	430 mm Hg ( 25 °C)
Brechungsindex	n20/D 1.456(lit.)
Flammpunkt	38 °F
storage temp.	2-8°C
Löslichkeit	Chloroform (Sparingly), Methanol (Slightly)
Aggregatzustand	Liquid
pka	9.8(at 25℃)
Farbe	Clear colorless to slightly yellow
Wasserlöslichkeit	243mg/L at 20℃
Merck	14,9710
BRN	956566
LogP	3.1 at 20℃
CAS Datenbank	2082-81-7(CAS DataBase Reference)
NIST chemische Informationen	1,4-Butylene glycol dimethacrylate(2082-81-7)
EPA chemische Informationen	1,4-Butanediol dimethacrylate (2082-81-7)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38-43
S-Sätze:	3-16-26-29-39-36/37/39
RIDADR	UN 2924 3/PG 2
WGK Germany	2
RTECS-Nr.	PA0350000
F	9-34
TSCA	TSCA listed
HazardClass	3
PackingGroup	I
HS Code	29161400
Giftige Stoffe Daten	2082-81-7(Hazardous Substances Data)

Gefahreninformationscode (GHS)

1,4-Butanediol dimethacrylate Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R43:Sensibilisierung durch Hautkontakt möglich.
S-Sätze Betriebsanweisung:
S3:Kühl aufbewahren.
S16:Von Zündquellen fernhalten - Nicht rauchen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S29:Nicht in die Kanalisation gelangen lassen.
S39:Schutzbrille/Gesichtsschutz tragen.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Beschreibung
Sensitization to 1,4-butanediol dimethacrylate (BUDMA) was reported in dental technieians, with cross reactivity to methylmethacrylate.
Chemische Eigenschaften
1,4-Butanediol dimethacrylate has a clear liquid appearance and is used as a cross-linking methacrylic monomer of polymers. They are present in dental composite materials, sealants, and inks. 1,4-Butanediol dimethacrylate is a non flammable liquid, with a low volatility and a moderatesolubility in water.
Verwenden
cross-linking methacrylic monomer for use in dental-composite materials, sealants, prostheses, etc.
Application
1,4-Butanediol dimethacrylate is an important crosslinking agent, which can be used as a crosslinking agent for rubber and plastics, a modifier for rubber and synthetic resins, an adhesive for acrylic sheets, and a plasticizer for glass fibers. It is widely used in injection moldings, rubber, optical plastics, adhesives, dental materials, wire and cable coatings, etc. At present, the preparation of 1,4-butanediol dimethacrylate is usually carried out by a reactive distillation ester exchange process in the presence of a catalyst and an inhibitor. The purpose of adding a catalyst and an inhibitor is to accelerate the reaction process and prevent polymerization during the reaction and distillation under the action of light and heat.
Synthese
Methyl methacrylate and 1,4-butanediol are taken as raw materials. The following steps conclude: reacting the methyl methacrylate with the 1,4-butanediol to prepare the product of 1,4-butanediol dimethacrylate with the purity of over 99.0 percent by adopting a reaction distillation ester exchange process in the presence of a catalyst and a polymerization inhibitor, wherein the catalyst is an organic tin catalyst. The polymerization inhibitor is a composite polymerization inhibitor.

Tetramethylendimethacrylat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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