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
