Description

Tribenzylphosphite CAS NO 15205-57-9 is a specialized organophosphorus compound primarily utilized as a high-performance ligand and stabilizer in advanced chemical synthesis. Its molecular structure makes it a valuable component for controlling reaction pathways and enhancing product stability in sensitive processes. This chemical is essential for manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and polymer industries seeking to improve catalyst systems and protect formulations from degradation.

Application

• As a ligand in transition metal catalysis for cross-coupling and hydrogenation reactions in pharmaceutical intermediate synthesis.
• As a stabilizer and antioxidant in polymer and resin formulations to prevent thermal and oxidative degradation.
• As a key intermediate in the synthesis of more complex organophosphorus compounds for agrochemicals.
• In lubricant and grease additives to enhance extreme pressure performance and reduce wear.
• For research and development of novel coordination chemistry and material science applications.
• As a chelating agent in specific metal extraction and purification processes.

Basic Information

Product Name	Tribenzylphosphite
CAS No.	15205-57-9
Molecular Formula	C21H21O3P
Molecular Weight	352.36 g/mol
Synonyms	Phosphorous Acid Tribenzyl Ester; Benzyl Phosphite ((C6H5CH2O)3P); Tris(benzyloxy)phosphine; Tribenzyl Phosphite; P(OCH2Ph)3; Tris(phenylmethoxy)phosphine; Phosphorous Acid Tris(phenylmethyl) Ester; Benzyl Phosphite (VAN)
EINECS	Contact for details

Quality Control

Our Tribenzylphosphite is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatographic purity assessment and identity confirmation, to ensure it meets precise specifications for industrial and research applications. A Certificate of Analysis (COA) detailing purity, physical properties, and test results is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen or argon) is recommended to preserve quality. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Refractive Index (n20D)	1.555 - 1.565
Density (20°C)	1.15 - 1.18 g/cm³

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