Description

Bis(4-Nonylphenyl) Chlorophosphite is a specialized organophosphorus compound widely utilized as a high-performance stabilizer and intermediate. Its primary commercial value lies in its ability to act as a highly effective secondary antioxidant and chelating agent, protecting polymers and other materials from degradation. This product is essential for manufacturers in the polymer, lubricant, and specialty chemical industries seeking to enhance product longevity and performance under demanding conditions.

Application

• Polymer Stabilization: Acts as a secondary antioxidant and metal deactivator in polyolefins (e.g., PP, PE), PVC, and engineering plastics to prevent thermal and oxidative degradation during processing and service life.
• Lubricant & Fuel Additive: Used as an antioxidant and anti-wear agent in synthetic lubricants, greases, and industrial oils to extend operational life and improve stability.
• Chemical Intermediate: Serves as a key precursor in the synthesis of more complex phosphite and phosphate esters, as well as other organophosphorus ligands and flame retardants.
• Rubber Industry: Employed as a non-discoloring stabilizer in synthetic rubber production to prevent premature aging and maintain elasticity.
• Adhesive & Sealant Formulations: Enhances the thermal stability and prevents gelation in hot-melt adhesives and various sealant systems.

Basic Information

Product Name	Bis(4-Nonylphenyl) Chlorophosphite
CAS No.	63302-49-8
Molecular Formula	C30H46ClO2P
Molecular Weight	505.11 g/mol
Synonyms	Chlorobis(4-nonylphenyl) Phosphite; Phosphorochloridous Acid, Bis(4-nonylphenyl) Ester; 4-Nonylphenol Chlorophosphite; Bis(p-nonylphenyl) Chlorophosphite; Chlorodiphenoxyphosphine Derivative; Nonylphenol Phosphite Chloride; Antioxidant TNPP Analog; Phosphorous Acid Chloride, Bis(4-nonylphenyl) Ester
EINECS	Contact for details

Quality Control

Our Bis(4-Nonylphenyl) Chlorophosphite is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay, impurity profiling, and physical property verification, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) documenting purity, identity, and key parameters are provided with every shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature and susceptibility to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from strong acids and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Chloride Content (Titration)	6.5 - 7.5 %
Acidity (as HCl)	≤ 0.5 %
Moisture (KF)	≤ 0.1 %
Specific Gravity (20°C)	0.98 - 1.02
Refractive Index (20°C)	1.520 - 1.530

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