Octamethyltrisiloxane Octamethyltrisiloxane
Structural formula
| Business number | 02VE |
|---|---|
| Molecular formula | C8H24O2Si3 |
| Molecular weight | 236.53 |
| label |
Dimethylbis(trimethylsilyloxy)silane, [(CH3)3SiO]2Si(CH3)2 |
Numbering system
CAS number:107-51-7
MDL number:MFCD00008264
EINECS number:203-497-4
RTECS number:None
BRN number:1753063
PubChem number:24886729
Physical property data
1. Properties: Undetermined
2. Density (g/mL, 25℃): 0.82
3. Relative vapor density (g/mL, air=1) :>1
4. Melting point (ºC): -82
5. Boiling point (ºC, normal pressure): 153
6. Boiling point (ºC, kPa): Undetermined
7. Refractive index (D20): 1.384
8. Flash point (ºC) : Undetermined
9. Specific rotation (ºC): Undetermined
10. Autoignition point or ignition temperature (ºC): Undetermined
11 . Vapor pressure (mmHg, 20ºC): Undetermined
12. Saturation vapor pressure (kPa, 20ºC): Undetermined
13. Heat of combustion (KJ/mol): Undetermined
14. Critical temperature (ºC): Undetermined
15. Critical pressure (KPa): Undetermined
16. Oil and water (octanol/water) Log value of distribution coefficient: Undetermined
17. Explosion upper limit (%, V/V): Undetermined
18. Explosion lower limit (%, V/V): Undetermined
19. Solubility: Undetermined
Toxicological data
None
Ecological data
None
Molecular structure data
1. Molar refractive index: 68.75
2. Molar volume (cm3/mol): 280.5
3. Isotonic specific volume (90.2K ): 567.2
4. Surface tension (dyne/cm): 16.7
5. Polarizability (10-24cm3): 27.25
Compute chemical data
1. Reference value for hydrophobic parameter calculation (XlogP): None
2. Number of hydrogen bond donors: 0
3. Number of hydrogen bond acceptors: 2
4. Number of rotatable chemical bonds: 4
5. Number of tautomers: none
6. Topological molecule polar surface area 18.5
7. Number of heavy atoms: 13
8. Surface charge: 0
9. Complexity: 149
10. Number of isotope atoms: 0
11. Determine the number of atomic stereocenters: 0
12. Uncertain number of atomic stereocenters: 0
13. Determine the number of chemical bond stereocenters: 0
14. Number of uncertain chemical bond stereocenters: 0
15. Number of covalent bond units: 1
Properties and stability
None
Storage method
None
Synthesis method
None
Purpose
None
