Description

Triphenylsilanol is a versatile organosilicon compound characterized by a central silicon atom bonded to three phenyl groups and one hydroxyl group. This unique structure makes it a valuable intermediate and functional additive in advanced material synthesis, offering excellent thermal stability and compatibility with organic polymers. It is primarily utilized by manufacturers in the silicone resin, electronics, and pharmaceutical industries for applications requiring precise surface modification and cross-linking control. Triphenylsilanol CAS NO 791-31-1 is a key building block for creating high-performance materials with tailored properties.

Application

• Silicone Resin & Polymer Modification: Acts as a chain terminator or cross-linking agent to control molecular weight and enhance thermal stability in silicone resins and high-performance polymers.
• Surface Treatment & Coupling Agent: Used to modify surface properties of fillers (e.g., silica) and improve adhesion between organic polymers and inorganic substrates in composite materials.
• Pharmaceutical & Agrochemical Intermediates: Serves as a key synthetic intermediate in the production of certain active pharmaceutical ingredients (APIs) and agrochemicals.
• Electronics & Semiconductor Industry: Employed in the formulation of dielectric materials, encapsulants, and photoresists due to its purity and stability under processing conditions.
• Catalyst & Ligand Synthesis: Utilized as a precursor for synthesizing organosilicon ligands and catalysts used in homogeneous catalysis and organic synthesis.
• Research & Development: A fundamental reagent in organic and organometallic chemistry research for developing new silicon-based compounds and materials.

Basic Information

Product Name	Triphenylsilanol
CAS No.	791-31-1
Molecular Formula	C18H16OSi
Molecular Weight	276.40 g/mol
Synonyms	Triphenylsilanol; Hydroxytriphenylsilane; Silanol, triphenyl-; Triphenylhydroxysilane; Triphenylsilicon hydroxide; TPS-OH; NSC 163208; Phenyl(trimethyl)silanol (related); Contact for additional trade names.
EINECS	212-341-0

Quality Control

Our Triphenylsilanol is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing, including assay by HPLC, identification by FT-IR, and control of key impurities, to ensure it meets the high-purity standards required for industrial and research applications. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and test results is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality. Keep away from incompatible materials such as strong acids and bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	150 - 155 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.