1,3,5-TRIMETHYL-1,3,5-TRIPHENYLCYCLOTRISILOXANE Chemical Properties

Melting point:

100°C

Boiling point:

160-90°C 5mm

Density 

1.102 g/mL at 20 °C(lit.)

refractive index 

1.545

Flash point:

>200°C

storage temp. 

Sealed in dry,Room Temperature

form 

solid

Specific Gravity

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 Substance Registry System

Cyclotrisiloxane, 2,4,6-trimethyl-2,4,6-triphenyl- (546-45-2)

Safety Information

Risk Statements 

20/21/22

Safety Statements 

24/25-36/37/39

WGK Germany 

3

TSCA 

TSCA listed

HS Code 

29319090

MSDS

• Language:English Provider:SigmaAldrich

1,3,5-TRIMETHYL-1,3,5-TRIPHENYLCYCLOTRISILOXANE Usage And Synthesis

Chemical Properties

Colorless to white solid

Definition

ChEBI: Cis-2,4,6-Trimethyl-2,4,6-triphenylcyclotrisiloxane is an organosilicon compound.

Synthesis

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(546-45-2)Related Product Information

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