Methylphenyldichlorosilane
Structural formula
| Business number | 03XX |
|---|---|
| Molecular formula | C7H8Cl2Si |
| Molecular weight | 191.13 |
| label |
Dichloromethylphenylsilane, Benzyldichlorosilane, Dichloromethylphenylsilane, Methyl-phenyl-dichlorosilane, Phenylmethyldichlorosilane |
Numbering system
CAS number:149-74-6
MDL number:MFCD00000490
EINECS number:205-746-2
RTECS number:VV3530000
BRN number:970975
PubChem number:24867568
Physical property data
1. Properties: colorless and transparent liquid[1]
2. Melting point (℃): -43.4[2]
3. Boiling point (℃): 206~207[3]
4. Relative density (water=1): 1.176[4]
5. Critical pressure (MPa): 2.8[5]
6. Octanol/water partition coefficient: 3.84[6 ]
7. Flash point (℃): 82[7]
8. Ignition temperature (℃): >400[8]
9. Explosion upper limit (%): 8.6[9]
10. Explosion lower limit (%): 0.2[10]
11. Solubility: soluble in methanol, ether, and benzene. [11]
Toxicological data
1. Acute toxicity No data available
2. Irritation No data available
3. Others[12] LDLo: 100mg/kg (rat abdominal cavity)
Ecological data
1. Ecotoxicity No data available
2. Biodegradability No data available
3 .Non-biodegradability No information available
Molecular structure data
1. Molar refractive index: 49.80
2. Molar volume (cm3/mol): 165.2
3. Isotonic specific volume (90.2K ): 381.5
4. Surface tension (dyne/cm): 28.4
5. Polarizability (10-24cm3): 19.74
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: 0
4. Number of rotatable chemical bonds: 1
5. Number of tautomers: none
6. Topological molecule polar surface area 0
7. Number of heavy atoms: 10
8. Surface charge: 0
9. Complexity: 108
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
1. Stability[13] Stable
2. Incompatible substances [14] Strong oxidizing agent,�Acid, strong alkali, alcohol, water vapor
3. Conditions to avoid contact[15] Humid air
4. Hazards of aggregation[16] No aggregation
5. Decomposition Product[17] Hydrogen chloride
Storage method
Storage Precautions[18] Store in a cool, dry and well-ventilated warehouse. Keep away from fire and heat sources. The explosion must be sealed and protected from moisture. They should be stored separately from oxidants, acids, alkalis, alcohols, etc. and avoid mixed storage. Use explosion-proof lighting and ventilation facilities. It is prohibited to use mechanical equipment and tools that are prone to sparks. The storage area should be equipped with emergency release equipment and suitable containment materials.
Synthesis method
It can be prepared by reacting methyltrichlorosilane and phenylmagnesium bromide.
Purpose
1. Used in the polymerization of phenyl-containing silicone oil and silicone rubber to improve the heat resistance or low temperature resistance of silicone oil and silicone rubber. It is one of the important monomers of silicone.
2. Used in the synthesis of silicone resins and phenyl-containing silicon compounds, it is one of the important monomers of silicone.
3. Prepare raw materials for high-temperature silicone oil and other organic silicon compounds. [19]
