Description

Diisodecyl Nonylphenyl Phosphite is a high-performance organophosphite antioxidant and stabilizer. This compound is critical for preventing oxidative degradation and maintaining the integrity of polymers and other sensitive materials during high-temperature processing and long-term use. It is an essential additive for manufacturers in the plastics, lubricant, and synthetic rubber industries seeking to enhance product durability and color stability.

Application

Diisodecyl Nonylphenyl Phosphite serves as a highly effective processing and long-term thermal stabilizer across multiple industries. Its primary function is to scavenge hydroperoxides and prevent chain-breaking autoxidation.

• Polymer Stabilization: A key antioxidant for polyolefins (PP, PE), PVC, polycarbonates, and engineering plastics to prevent yellowing and embrittlement.
• Lubricant & Grease Additive: Used in synthetic and mineral-based lubricants to inhibit oxidation, reduce sludge formation, and extend service life.
• Synthetic Rubber Production: Protects elastomers like SBR, BR, and NBR from heat-induced degradation during compounding and vulcanization.
• Adhesive & Sealant Formulations: Enhances the thermal-oxidative stability of hot-melt and reactive adhesive systems.
• Color Stabilizer: Prevents color development in clear and pigmented polymer articles exposed to heat and light.
• Synergistic Blends: Often used in combination with primary phenolic antioxidants (e.g., BHT, Irganox) for enhanced stabilization performance.

Basic Information

Item	Detail
Product Name	Diisodecyl Nonylphenyl Phosphite
CAS No.	93843-07-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Phosphorous Acid, Isodecyl Nonylphenyl Ester; Nonylphenol Diisodecyl Phosphite; Diisodecyl Nonyl Phenyl Phosphite; Antioxidant 93843-07-3; Phosphite Stabilizer DNPP; DNPP; Tris(isodecyl) Nonylphenyl Phosphite (related); Doverphos® 7 (potential trade name); Weston® DNPP (potential trade name)
EINECS	Contact for details

Quality Control

Our Diisodecyl Nonylphenyl Phosphite is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications for consistent performance. Certificates of Analysis (COA) documenting purity, assay, and key impurity profiles are available upon request to support your quality assurance protocols.

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 hygroscopic (moisture-sensitive) and should be kept under a dry inert atmosphere (e.g., nitrogen) after opening to prevent hydrolysis and oxidation. Keep away from strong oxidizers and bases.

Specification

Item	Specification
Appearance	Clear, Colorless to Pale Yellow Liquid
Identification (IR)	Conforms
Assay (Phosphite Content)	≥ 95.0 %
Acidity (as Phosphorous Acid)	≤ 0.5 %
Color (APHA)	≤ 100
Refractive Index (20°C)	Contact for details
Density (20°C)	Contact for details
Moisture (Karl Fischer)	≤ 0.1 %

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