Diphenyldichlorosilane Diphenyldichlorosilane

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:80-10-4

MDL number:MFCD00000489

EINECS number:201-251-0

RTECS number:VV3190000

BRN number:609882

PubChem number:24894005

Physical property data

1. Properties: colorless flammable liquid

2. Density (g/mL, 20℃): 1.2216

3. Relative vapor density (g/mL, air =1): 8.45

4. Melting point (ºC): -22

5. Boiling point (ºC, normal pressure): 302~305

6. Boiling point (ºC, 0.3mmHg): Undetermined

7. Refractive index (n20/D): 1.578 (lit.)

8. Flash point (ºC): 142.2

9. Specific rotation (º): Undetermined

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

11. Vapor pressure (mmHg, 40ºC): Undetermined

12. Saturated vapor pressure (kPa, 125ºC): 0.27

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

14. Critical temperature (ºC): Undetermined

15. Critical pressure (KPa): Undetermined

16. The logarithmic value of the oil-water (octanol/water) partition coefficient: Undetermined

17. The upper limit of explosion (%, V/V): Undetermined

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

19. Solubility: soluble in most organic solvents

Toxicological data

1. Skin/eye irritation

Standard Draize test: rabbit, skin contact: 20mg/24H; severity of reaction: moderate.

Standard Draize test: Rabbit, eye contact: 5mg/24H; Severity of reaction: Severe.

Ecological data

Slightly hazardous to water, avoid contact of undiluted or large quantities of product with groundwater, waterways or sewage systems.

Molecular structure data

1. Molar refractive index: 69.88

2. Molar volume (cm³/mol): 209.2

3. Isotonic specific volume (90.2K): 515.3

4. Surface tension (dyne/cm): 36.7

5. Polarizability (10-24cm3): 27.70

Compute chemical data

1. Number of hydrogen bond donors: 0

2. Number of hydrogen bond acceptors: 0

3. Number of rotatable chemical bonds: 2

4. Topological molecular polar surface area (TPSA): 0

5. Number of heavy atoms: 15

6. Surface charge: 0

7 , Complexity: 174

8. Number of isotope atoms: 0

9. Number of determined atomic stereocenters: 0

10. Uncertain atomic configuration Number of centers: 0

11. Determined number of stereocenters of chemical bonds: 0

12. Uncertain number of stereocenters of chemical bonds: 0

13. Covalent Number of key units: 1

Properties and stability

Reacts with moist air, strong oxidants, and water.

Storage method

Stored in a cool, dry and well-ventilated warehouse. Keep away from fire and heat sources. Keep container tightly sealed. They should be stored separately from oxidants, etc. and avoid mixed storage. Equipped with the appropriate variety and quantity of fire equipment. The storage area should be equipped with emergency release equipment and suitable containment materials.

Synthesis method

The crude monomer is directly synthesized in one step from chlorobenzene and silicon powder in the presence of copper catalyst, and the products trichlorophenylsilane and dichlorodiphenylsilane are obtained through rectification. The crude monomer composition is generally 30% trichlorophenylsilane and 8% dichlorodiylsilane. Raw material consumption quota (calculated per ton of trichlorophenylsilane): chlorobenzene (98%) 2487kg/t, silicon powder (96%) 290kg/t, cuprous chloride (95%) 179kg/t.

Purpose

Used as raw material for silicone oil and silicone resin, synthesis of high molecular aryl silicon compounds.

Used to manufacture silicone resin and prepare silicone adhesives.

Used in the production of silicone resin, diphenylsilanediol and methylphenyl silicone oil, etc.