octamethyltrisiloxane octamethyltrisiloxane

structural formula

• numbering system
• physical property data
• toxicological data
• ecological data
• molecular structure data
• computing chemical data
• more
  • properties and stability
  • storage method
  • synthesis method
  • purpose

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