Description

Tri-Neo-Pentylphosphite is a specialized organophosphorus compound valued for its role as a high-performance stabilizer and intermediate. Its unique neo-pentyl structure provides enhanced steric hindrance, contributing to superior thermal and oxidative stability in demanding applications. This product is essential for manufacturers in the polymer, lubricant, and specialty chemical industries seeking to improve product longevity and performance under harsh conditions.

Application

• Polymer Stabilizer: Acts as a highly effective secondary antioxidant and metal deactivator in polyolefins (e.g., PP, PE), PVC, and engineering plastics to prevent thermal degradation and color formation during processing and end-use.
• Lubricant & Fuel Additive: Used as an anti-wear agent and antioxidant in synthetic lubricants, greases, and industrial oils to extend service life and protect machinery components.
• Chemical Intermediate: Serves as a key building block in the synthesis of more complex phosphite and phosphate esters, ligands for catalysts, and other specialty organophosphorus compounds.
• Rubber Industry: Employed as a non-discoloring stabilizer in synthetic rubber production to maintain elasticity and prevent aging.
• Adhesive & Coating Formulations: Enhances the thermal stability and weatherability of adhesive and coating systems, particularly those exposed to high temperatures.

Basic Information

Product Name	Tri-Neo-Pentylphosphite
CAS No.	14540-52-4
Molecular Formula	C15H33O3P
Molecular Weight	292.40 g/mol
Synonyms	Tris(neopentyl) phosphite; Tris(2,2-dimethylpropyl) phosphite; Phosphorous acid, tris(2,2-dimethylpropyl) ester; TNPP (common industry abbreviation); Neopentyl phosphite (triester); Tris(neo-pentyloxy)phosphine
EINECS	238-588-8

Quality Control

Our Tri-Neo-Pentylphosphite is manufactured under a strict quality management system. Each batch is analyzed to ensure it meets high-purity standards, with key parameters including assay, color, and acidity closely monitored. A Certificate of Analysis (COA) detailing the specific results is provided with every shipment to guarantee traceability and consistency for your production processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation. Keep away from strong oxidizers and heat sources.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 97.0 %
Acidity (as H3PO4)	≤ 0.1 %
Color (APHA)	≤ 50
Refractive Index (n20D)	1.4380 - 1.4420
Density (20°C)	0.920 - 0.940 g/mL

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