2,4,6-Trimethyl-2,4,6-triphenylcyclotrisiloxan

Bezeichnung:2,4,6-Trimethyl-2,4,6-triphenylcyclotrisiloxan

CAS-Nr546-45-2

Englisch Name:1,3,5-Trimethyl-1,3,5-triphenylcyclotrisiloxane

CBNumberCB7767751

SummenformelC21H24O3Si3

Molgewicht408.67

MOL-Datei546-45-2.mol

Synonyma

2,4,6-Trimethyl-2,4,6-triphenylcyclotrisiloxan

2,4,6-Trimethyl-2,4,6-triphenylcyclotrisiloxan physikalisch-chemischer Eigenschaften

Schmelzpunkt	100°C
Siedepunkt	160-90°C 5mm
Dichte	1.102 g/mL at 20 °C(lit.)
Brechungsindex	1.545
Flammpunkt	>200°C
storage temp.	Sealed in dry,Room Temperature
Aggregatzustand	solid
Wichte	1.1
Hydrolytic Sensitivity	1: no significant reaction with aqueous systems
BRN	2954104
InChI	InChI=1S/C21H24O3Si3/c1-25(19-13-7-4-8-14-19)22-26(2,20-15-9-5-10-16-20)24-27(3,23-25)21-17-11-6-12-18-21/h4-18H,1-3H3
InChIKey	HAURRGANAANPSQ-UHFFFAOYSA-N
SMILES	[Si]1(C)(O[Si](O[Si](C)(C2C=CC=CC=2)O1)(C)C1C=CC=CC=1)C1=CC=CC=C1
EPA chemische Informationen	Cyclotrisiloxane, 2,4,6-trimethyl-2,4,6-triphenyl- (546-45-2)

Sicherheit

R-Sätze:	20/21/22
S-Sätze:	24/25-36/37/39
WGK Germany	3
TSCA	TSCA listed
HS Code	29319090

Gefahreninformationscode (GHS)

1,3,5-Trimethyl-1,3,5-triphenylcyclotrisiloxane Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R20/21/22:Gesundheitsschädlich beim Einatmen,Verschlucken und Berührung mit der Haut.
S-Sätze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Chemische Eigenschaften
Colorless to white solid
Definition
ChEBI: Cis-2,4,6-Trimethyl-2,4,6-triphenylcyclotrisiloxane is an organosilicon compound.
Synthese

A method of preparing a synthetic 2,4,6-trimethyl-2,4,6-triphenylcyclotrisiloxane, comprising the steps as follows:
(1) adding methylphenyl dianisoxysilane and pure water at a mass ratio of I:0. I~I to a reaction vessel for hydrolysis reaction, hydrolysis temperature of 60C~200C, stirring, and constantly evaporating the mixture of methanol and water produced by the reaction. When the density of the evaporated liquid reaches 0.9~lg/ml, stop evaporation, reflux 0.5~4h, and separate out the lower oil phase hydrolysate;
(2) Move the oil phase hydrolysate obtained in step (I) into the reactor for dewatering under reduced pressure, and dewatering of low-boiling materials, with the pressure ranging from -0.05MPa to -0.098MPa, and the temperature ranging from 80C to 200C, and the time from 0.5h to 8h ;
(3) Add the oil phase hydrolysate into the reaction vessel for hydrolysis reaction at the temperature of 60C~200C, stirring, and continuously evaporating the mixture of methanol and water produced by the reaction. 0.5h~8h;
(3) After dehydration and stripping out the low-boiling material, continue to raise the temperature, and distill the methyl phenyl cyclosiloxane under reduced pressure, with the temperature range of 200C~400C, and the pressure range of -0.098MPa~-0.0999MPa, and collect the methyl phenyl cyclosiloxane fraction.

1,3,5-Trimethyl-1,3,5-triphenylcyclotrisiloxane Upstream-Materialien And Downstream Produkte

2,4,6-Trimethyl-2,4,6-triphenylcyclotrisiloxan Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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