Home > Organosilicon Compounds> 2,2,4,4,6,6,8-heptamethyl-1,3,5,7,2,4,6,8λ3-tetraoxatetrasilocane

2,2,4,4,6,6,8-heptamethyl-1,3,5,7,2,4,6,8λ3-tetraoxatetrasilocane

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Origin: China

Cas No: 15721-05-8

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 80 mt/month

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

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CAS No.: 15721-05-8 Formula: C7H22O4Si4 Molecular Weight: 282.58900

Basic Info

Chemical Name	2,2,4,4,6,6,8-heptamethyl-1,3,5,7,2,4,6,8λ<sup>3</sup>-tetraoxatetrasilocane
Synonyms	CYCLOTETRASILOXANE,HEPTAMETHYL; Heptamethylcyclotetrasiloxane; 1,3,3,5,5,7,7-heptamethylcyclotetrasiloxane; 2,4,4,6,6,8,8-Heptamethylcyclotetrasiloxan; Heptamethyl-cyclotetrasiloxan; 1,3,3,5,5,7,7-Heptamethylcyclotetrasiloxan; 2,2,4,4,6,6,8-heptamethyl-1,3,5,7,2,4,6,8; Cyclotetrasiloxane, heptamethyl-;
CAS No.	15721-05-8
Molecular Formula	C7H22O4Si4
Molecular Weight	282.58900
PSA	36.92000
LogP	2.02210

Properties

Density	0.958 g/cm3
Boiling Point	165ºC
Melting Point	-27ºC
Flash Point	46ºC
Refractive Index	1.3965

Safety Info

Safety Statements	S16
HS Code	2901100000
RIDADR	UN 1993
Risk Statements	R10

Synthesis Route

Dichloromethylsilane+Dichlorodimethylsilane→2,2,4,4,6,6,8-heptamethyl-1,3,5,7,2,4,6,8λ3-tetraoxatetrasilocane
Dichloromethylsilane+bis[[chloro(dimethyl)silyl]oxy]-dimethylsilane→2,2,4,4,6,6,8-heptamethyl-1,3,5,7,2,4,6,8λ3-tetraoxatetrasilocane

Toxicity

Exposure Route	Type of Test	Species Observed	Dose/Duration	Toxic Effects
Oral	LDLo - Lowest published lethal dose	Rodent - mouse	3 gm/kg	1.Details of toxic effects not reported other than lethal dose value

Precursor

Dichloromethylsilane
Dichlorodimethylsilane
bis[[chloro(dimethyl)silyl]oxy]-dimethylsilane

Downstream Product

2,2,4,4,6,6,8-heptamethyl-8-(2-phenylpropyl)-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
2-chloro-2,4,4,6,6,8,8-heptamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane

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