Home > Organosilicon Compounds> 2,2,4,4,6,6-hexamethyl-8,8-diphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane

2,2,4,4,6,6-hexamethyl-8,8-diphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane

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Origin: China

Cas No: 1693-44-3

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 100 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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Products Specification
Product Description

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CAS No.: 1693-44-3 Formula: C18H28O4Si4 Molecular Weight: 420.75500

Basic Info

Chemical Name	2,2,4,4,6,6-hexamethyl-8,8-diphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
Synonyms	Cyclotetrasiloxane,2,2,4,4,6,6-hexamethyl-8,8-diphenyl; 1,1-diphenyl-3,3,5,5,7,7-hexamethyltetracyclosiloxane; 2,2,4,4,6,6-hexamethyl-8,8-diphenyl-cyclotetrasiloxane; 2.2.4.4.6.6-Hexamethyl-8.8-diphenyl-cyclotetrasiloxan; 2,2,4,4,6,6-Hexamethyl-8,8-diphenyl-[1,3,5,7,2,4,6,8]cyclotetrasiloxane; 1,1-diphenylhexamethylcyclotetrasiloxane; Diphenyl-D4; 1,1-diphenyl-3,3,5,5,7,7-hexamethylcyclotetrasiloxane; EINECS 216-895-8;
CAS No.	1693-44-3
Molecular Formula	C18H28O4Si4
Molecular Weight	420.75500
PSA	36.92000
LogP	3.42840

Properties

Density	1.06g/cm3
Boiling Point	353.9ºC at 760mmHg
Flash Point	146ºC
Refractive Index	1.513
Vapor Pressure	7.1E-05mmHg at 25°C

Safety Info

HS Code	2916399090

Synthesis Route

1,1,3,3,5,5-Hexamethyltrisiloxane+Diphenylsilanediol→2,2,4,4,6,6-hexamethyl-8,8-diphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
octamethylcyclotetrasiloxane+Dimethoxydiphenylsilane→2,2,4,4,6,6-hexamethyl-8,8-diphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane+Cyclopentasiloxane, octamethyldiphenyl-
Hexamethylcyclotrisiloxane+Dimethoxydiphenylsilane→2,2,4,4,6,6-hexamethyl-8,8-diphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane+diphenyl-bis(trimethylsilyloxy)silane

GC Analysis

Column type	Active phase	Temperature (°C)	Retention Index (I)	Temperature Control Method
Capillary	Methyl Silicone	-	1883.	temperature ramp

Precursor

Diphenylsilanediol
1,1,3,3,5,5-Hexamethyltrisiloxane
Dimethoxydiphenylsilane
octamethylcyclotetrasiloxane

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