Epoxy curing agent Knowledge Octamethyltrisiloxane Octamethyltrisiloxane

Octamethyltrisiloxane Octamethyltrisiloxane

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Structural formula of 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

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