Hexamethylcyclopropylsilane

Structural formula

Business number	05KL
Molecular formula	C6H18O3Si3
Molecular weight	222.47
label	Hexamethylcyclotrisiloxane, Hexamethylcyclotrisiloxane (D3), cyclotrimethicone, 1,1,3,3,5,5-Hexamethylcyclotrisilazane, 2,2,4,4,6,6-Hexamethyl-1,3,5,2,4,6-trioxatrisilinane, Dimethylsiloxane cyclic trimer

• 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:541-05-9

MDL number:MFCD00005943

EINECS number:208-765-4

RTECS number:None

BRN number:1766829

PubChem ID:None

Physical property data

1. Character: white crystal

2. Density (g/ cm³,25/4℃):1.12

3. Relative vapor density (g/cm³,AIR=1): Not OK

4. Melting point (ºC):64.5

5. Boiling point (ºC,Normal pressure):134

6. Boiling point (ºC,8kPa): Undetermined

7. Refractive index:1.3980

8. Flash point (ºC): Undetermined

9. Specific optical rotation (º): Undetermined

10. Autoignition point or ignition temperature (ºC): Undetermined

11. Vapor pressure (kPa,25ºC): Undetermined

12. Saturated vapor pressure (kPa,55.1ºC): Undetermined

13. Heat of combustion (KJ/mol):39.8

14. Critical temperature (ºC): Undetermined

15. Critical pressure (KPa): Undetermined

16. Oil and water (octanol /Log value of the partition coefficient of water:4.47

17. Explosion limit (%,V/V): Undetermined

18. Lower explosion limit (%,V/V): Undetermined

19. Solubility:Hardly soluble in water

Toxicological data

None

Ecological data

This substance may be harmful to the environment, and special attention should be paid to water bodies.

Molecular structure data

1. Molar refractive index: 59.26

2. Molar volume (m³/mol）：235.4

3. isotonic specific volume (90.2K):481.8

4. Surface Tension (dyne/cm):17.5

5. Polarizability（10^-24cm³):23.49

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: 3

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: none

6. Topological molecule polar surface area 27.7

7. Number of heavy atoms: 12

8. Surface charge: 0

9. Complexity: 139

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

Use and store according to specifications, no decomposition will occur, and avoid contact with oxides

Storage method

Stored in a cool, dry, well-ventilated warehouse. Keep away from fire and heat sources. Protect from direct sunlight. The packaging is sealed. They should be stored separately from acids and food chemicals, and avoid mixed storage. Suitable materials should be available in the storage area to contain spills.

Synthesis method

None

Purpose

In addition to being used to synthesize general organosilicon polymers, it can also be used to prepare specific organosilicon compounds as various Surface treatment agents, coupling agents, cross-linking agents, etc.