Triphenylsilane

Basic Information

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CAS Number

789-25-3

Molecular Formula

C18H16Si

Molecular Weight

260.41 g/mol

EINECS

212-333-0

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Hydrocarbons

Basic Physical Properties

Melting Point

43-45 °C

Boiling Point

152 °C/2 mmHg

Density

160

Water Solubility

REACTS

Flash Point

169 °F

Refractive Index

1.6160

Vapor Pressure

No data available

SMILES

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c1ccc(cc1)[SiH](c2ccccc2)c3ccccc3

InChI

InChI=1S/C18H16Si/c1-4-10-16(11-5-1)19(17-12-6-2-7-13-17)18-14-8-3-9-15-18/h1-15,19H

InChIKey

AKQNYQDSIDKVJZ-UHFFFAOYSA-N

LogP

1.9350999999999998

Topological Polar Surface Area

0.0 Å²

Hydrogen Bond Donor/Acceptor

0 / 0

Complexity

202

Safety Information

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Hazard Statement

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

Hydrolysis Sensitivity

3: reacts with aqueous base

Sensitiveness

Air Sensitive

Synonyms & References

English

triphenyl-silan
Triphenylhydrosilane
Triphenylsilaneminoffwhitepowder
Triphenylsilane,min.97%
Triphenysilane
SILANE, TRIPHENYL-
TRIPHENYLSILANE FOR SYNTHESIS
Tri(phenyl)silicon
Triphenylsilane
triphenylsilicon
1,1′,1′′-Silylidynetrisbenzene
NSC 12565
triphenylsilane

MDL Number

MFCD00003003

EC Number

212-333-0

Customs Code

29310095

FAQ

What are the physical and chemical properties of Triphenylsilane (CAS: 789-25-3)?

Triphenylsilane (CAS: 789-25-3) is a colorless to light yellow liquid with a molecular weight of approximately 278.32 g/mol. It has a low solubility in water but is highly soluble in organic solvents. Chemically, it is less reactive compared to other organosilanes, making it useful in various applications. It has a specific gravity of around 0.96 and a melting point of -40°C, boiling point of 110°C, and vapor pressure of 1 mmHg at 25°C.

How is Triphenylsilane (CAS: 789-25-3) typically synthesized?

Triphenylsilane (CAS: 789-25-3) is typically synthesized by the reaction of triphenyl germanium and hydrogen chloride in the presence of a base such as sodium hydroxide or potassium hydroxide. The reaction is carried out at room temperature and atmospheric pressure. The yield is usually around 85-90%, and the product is purified by distillation to remove any unreacted starting materials and impurities.

What industries use Triphenylsilane (CAS: 789-25-3)?

Triphenylsilane (CAS: 789-25-3) is widely used in industries such as pharmaceuticals, where it serves as a protecting group for silicon-containing compounds. It is also used in polymer synthesis, particularly in the preparation of organosilicon polymers. Additionally, it finds applications in semiconductor manufacturing for surface protection and in the production of chemical sensors for their dielectric properties.

What precautions should be taken when handling Triphenylsilane (CAS: 789-25-3)?

When handling Triphenylsilane (CAS: 789-25-3), it is essential to wear appropriate personal protective equipment (PPE) such as gloves, safety goggles, and protective clothing. Fume hoods should be used during operations to minimize exposure to the volatile compound. Spills should be cleaned up carefully using appropriate absorbents, and the area should be ventilated. Safety data sheets (SDS) should be consulted for detailed handling and disposal information.