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1000-05-1

Basic Information
CAS No.: 1000-05-1
Name: Tetrasiloxane,1,1,3,3,5,5,7,7-octamethyl-
Article Data: 15
Cas Database
Molecular Structure:
Molecular Structure of 1000-05-1 (Tetrasiloxane,1,1,3,3,5,5,7,7-octamethyl-)
Formula: C8H26O3Si4
Molecular Weight: 282.635
Synonyms: 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane;Octamethyltetrasiloxane;Tetrasiloxane, 1,1,3,3,5,5,7,7-octamethyl-;
EINECS: 213-669-0
Density: 0.863
Melting Point: <0°C
Boiling Point: 205.1 °C at 760 mmHg
Flash Point: 77.8 °C
Solubility: N/A
Appearance: N/A
Hazard Symbols: Xi
Risk Codes: 36/37/38
Safety: 26-36
Transport Information: N/A
PSA: 27.69000
LogP: 2.40660
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Specification

The Tetrasiloxane,1,1,3,3,5,5,7,7-octamethyl-, with the CAS registry number 1000-05-1 and EINECS registry number 213-669-0, has the systematic name of 1,1,3,3,5,5,7,7-octamethyltetrasiloxane. It is a kind of organics, and the molecular formula of the chemical is C8H26O3Si4.

The characteristics of Tetrasiloxane,1,1,3,3,5,5,7,7-octamethyl- are as followings: (1)ACD/LogP: 7.69; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 7.69; (4)ACD/LogD (pH 7.4): 7.69; (5)ACD/BCF (pH 5.5): 411311.22; (6)ACD/BCF (pH 7.4): 411311.22; (7)ACD/KOC (pH 5.5): 363241.88; (8)ACD/KOC (pH 7.4): 363241.88; (9)#H bond acceptors: 3; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 6; (12)Polar Surface Area: 27.69 Å2; (13)Flash Point: 77.8 °C; (14)Enthalpy of Vaporization: 42.33 kJ/mol; (15)Boiling Point: 205.1 °C at 760 mmHg; (16)Vapour Pressure: 0.365 mmHg at 25°C.

Uses of Tetrasiloxane,1,1,3,3,5,5,7,7-octamethyl-: It can react with 1-phenyl-1-vinylhexamethylcyclotetrasiloxane to produce 1,5-bis(hexamethylphenylcyclotetrasiolxanylethyl)octamethyltetrasiloxane. This reaction will need catalyst H2PtCl6. The reaction time is 8 hours with temperature of 120°C, and the yield is about 81.7%.  

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: O([SiH](C)C)[Si](O[Si](O[SiH](C)C)(C)C)(C)C
(2)InChI: InChI=1/C8H26O3Si4/c1-12(2)9-14(5,6)11-15(7,8)10-13(3)4/h12-13H,1-8H3
(3)InChIKey: MMAKNNYIZYDWTD-UHFFFAOYAT