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Phenylsilane

April 30, 2026
Product name Phenylsilane
Synonym PHENYLSILANE;Benzene, silyl-;Fenylsilan;phenyl-silan
CAS NO. 694-53-1
Appearance Colorless liquid
Purity 99.5% Min
MF C6H8Si
MW 108.21
Structural formula
Related categories Aromatic Hydrocarbons; Silicone;
Transport Information UN 3399 4.3/PG 2 
HS Code 2931900090
Product Manager Email sophia@coreychem.com

 

 

Applications of Phenylsilane (CAS: 694-53-1)
 
Phenylsilane (PhSiH₃) is a highly reactive organosilane monomer containing Si–H bonds. Its core applications focus on four major fields: organic synthesis reducing agent, silicon-based material precursor, polymer modification, and pharmaceutical intermediate synthesis, with both scientific research and industrial value.

1. Organic Synthesis: Highly Selective Reducing Agent and Synthetic Building Block

  • Reduction Reactions: Mildly reduces aldehydes/ketones to alcohols, imines to amines, and phosphine oxides to phosphines (e.g., reducing phosphine oxide in PAPO to phosphine); participates in free radical deoxygenation of alcohols and dehalogenation of organic halides, with strong functional group compatibility (does not affect fluorine/chlorine/nitro groups/double bonds, etc.).
  • Peptide and Amide Synthesis: Serves as an in-situ activator of carboxylic acids, efficiently catalyzing the condensation of carboxylic acids and amines to form amides/peptides, suitable for solid-phase/liquid-phase synthesis, and used in the preparation of drug molecules and bioactive peptides.
  • Hydrosilylation: Under platinum/rhodium catalysis, it undergoes addition reactions with alkenes and alkynes to synthesize phenyl-containing organosilane intermediates (silicon ethers, siloxanes, aminosilanes, etc.).

2. Precursor for Silicon-Based Functional Materials

  • Silicon Nanowires/Semiconductor Materials: As a silicon source, crystalline silicon nanowires are synthesized by the gold nanocrystal seed supercritical fluid-solid (SFLS) method, which are used in microelectronics, sensors, and photovoltaic devices.
  • Organosilicon Polymers: Photopolymerizes with MMA to prepare poly(methyl methacrylate) containing SiH groups; synthesizes phenyl silicone oil, silicone resin, and silicone rubber, endowing materials with high temperature resistance, radiation resistance, insulation, and hydrophobic properties, which are used in high-temperature sealing, electronic insulation, and aerospace coatings.
  • Surface Modification: Used for silanization of silica, glass, and metal surfaces, improving the dispersibility and interfacial bonding force of fillers in polymers, and optimizing the mechanical/thermal properties of composite materials.

3. Pharmaceutical and Fine Chemical Intermediates

  • Drug Synthesis: Used in the synthesis of antipsychotics, antihistamines, and fentanyl intermediates; participates in the construction of heterocyclic compounds to optimize the lipophilicity and metabolic stability of drug molecules.
  • Organic Reagents: High-end chemical reagents, chiral synthesis auxiliaries, and catalyst ligand precursors, used in new drug research and development and total synthesis of complex natural products.

4. Other Applications

  • Electronic Chemicals: Silicon source deposition and photoresist additives in semiconductor processes, improving the weather resistance and electronic properties of materials.
  • Scientific Research Reagents: Used in basic research on organosilicon chemistry, catalytic reactions, and materials science in universities and enterprise R&D centers.

 

 

 

Contact information:

Contact: Sophia Li

Email: sophia@coreychem.com

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