Description

Dibenzyl Phosphite is an organophosphorus compound widely utilized as a versatile intermediate and stabilizer. Its primary commercial value lies in its role as an effective antioxidant and metal deactivator, protecting polymers and lubricants from thermal and oxidative degradation. This makes it a critical material for manufacturers in the polymer, plastics, and specialty lubricant industries seeking to enhance product longevity and performance.

Application

• Polymer Stabilizer: Acts as a secondary antioxidant and metal deactivator in polyolefins (e.g., polyethylene, polypropylene) to prevent thermal and oxidative degradation during processing and service life.
• Lubricant & Grease Additive: Used as an anti-wear and extreme pressure (EP) additive, as well as an antioxidant, in synthetic lubricants and industrial greases.
• Chemical Intermediate: Serves as a key precursor in the synthesis of other organophosphorus compounds, including phosphonates and phosphate esters used in flame retardants and plasticizers.
• Flame Retardant Synergist: Employed in combination with halogenated compounds to enhance flame retardant efficacy in plastics and textiles.
• Adhesive & Sealant Formulations: Functions as a stabilizer to prevent premature curing and degradation in reactive adhesive systems.
• Catalyst & Ligand in Organic Synthesis: Used in certain transition metal-catalyzed reactions, including cross-coupling and hydroformylation processes.

Basic Information

Product Name	Dibenzyl Phosphite
CAS No.	17176-77-1
Molecular Formula	C14H15O3P
Molecular Weight	262.24 g/mol
Synonyms	Dibenzyl Phosphonate; Phosphonic Acid, P,P-Bis(phenylmethyl) Ester; Benzyl Phosphite ((C6H5CH2O)2P(O)H); DBPP; Dibenzyl Hydrogen Phosphite; Bis(benzyloxy)phosphine Oxide; (Benzyloxy)(hydroxy)phosphinous Acid Benzyl Ester
EINECS	241-236-8

Quality Control

Our Dibenzyl Phosphite is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and performance. A detailed Certificate of Analysis (COA) documenting assay, impurity profile, and physical properties is provided with each shipment to guarantee consistency and support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials such as strong oxidizing agents. Recommended storage temperature is 15-25°C. The product is moisture-sensitive; keep container tightly sealed when not in use.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC or HPLC)	≥ 98.0%
Refractive Index (n20D)	1.550 - 1.560
Density (20°C)	1.15 - 1.20 g/cm³
Water Content (Karl Fischer)	≤ 0.5%

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