Description

Phenyl Neopentyl Phosphite is a specialized organophosphorus compound widely recognized as an effective secondary antioxidant and process stabilizer. Its primary value lies in its ability to prevent polymer degradation during high-temperature processing and in-service use, thereby extending material lifespan and performance. This chemical is essential for manufacturers in the plastics, synthetic rubber, and lubricant industries seeking to enhance the thermal stability and color retention of their products.

Application

• Polymer Stabilization: Acts as a secondary antioxidant (phosphite) in polyolefins (PP, PE), PVC, engineering plastics, and synthetic rubbers to prevent thermal and oxidative degradation during processing and long-term use.
• Color Retention Agent: Helps maintain the original color of polymers by decomposing hydroperoxides, preventing the formation of chromophoric groups.
• Synergistic Formulations: Used in combination with primary phenolic antioxidants to provide superior stabilization, often resulting in enhanced performance at lower total additive levels.
• Lubricant and Fuel Additive: Serves as an antioxidant and anti-wear agent in advanced lubricating oils, greases, and industrial fluids.
• Intermediate for Chemical Synthesis: Employed as a building block or ligand precursor in the synthesis of other organophosphorus compounds, including catalysts and flame retardants.

Basic Information

Product Name	Phenyl Neopentyl Phosphite
CAS No.	21879-32-3
Molecular Formula	C11H15O3P
Molecular Weight	226.21 g/mol
Synonyms	Neopentyl Phenyl Phosphite; Phenol, (2,2-dimethylpropoxy)phosphinyl ester; Phosphorous acid, neopentyl phenyl ester; Phenyl(2,2-dimethylpropyl) phosphite; (2,2-Dimethylpropoxy)(phenoxy)phosphine oxide; Antioxidant PNP; Phosphite stabilizer PNP
EINECS	244-637-9

Quality Control

Our production of Phenyl Neopentyl Phosphite adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed against comprehensive specifications using advanced techniques like GC and HPLC. A Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment, ensuring full traceability and compliance with relevant industry standards.

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). This material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent contact with atmospheric moisture, which can lead to hydrolysis. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 98.0 %
Acidity (as H3PO4)	≤ 0.1 %
Water Content (Karl Fischer)	≤ 0.1 %
Refractive Index (nD20)	1.510 - 1.520
Density (20°C)	1.08 - 1.12 g/cm³

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