Description

Phosphorous Acid, 2-[2-[[Bis(Isodecyloxy)Phosphino]Oxy]Propoxy]-1-Methylethyl Isodecyl Phenyl Ester is a specialized organophosphorus compound designed for high-performance applications requiring exceptional stability and functionality. This chemical is valued for its role as a highly effective stabilizer and antioxidant, protecting materials from thermal and oxidative degradation. It is primarily utilized by manufacturers in the polymer, lubricant, and specialty chemical industries seeking to enhance the longevity and performance of their formulations.

Application

• Polymer Stabilizer: Acts as a secondary antioxidant and phosphite processing stabilizer in polyolefins (PP, PE), PVC, and engineering plastics to prevent yellowing and maintain mechanical properties during high-temperature processing.
• Lubricant & Grease Additive: Serves as an anti-wear and extreme pressure (EP) additive, as well as an antioxidant, in synthetic and industrial lubricants to extend service life and protect machinery.
• Synergistic Antioxidant Systems: Used in combination with primary phenolic antioxidants to provide superior long-term thermal stabilization for a wide range of polymeric materials.
• Hydraulic & Transmission Fluids: Imparts hydrolytic stability and oxidation resistance in demanding fluid formulations for automotive and industrial applications.
• Adhesive & Sealant Formulations: Enhances the thermal aging resistance of hot-melt adhesives and elastomeric sealants.
• Fuel & Oil Additives: Employed as a stabilizer to prevent gum formation and oxidation in fuels and industrial oils.

Basic Information

Item	Details
Product Name	Phosphorous Acid, 2-[2-[[Bis(Isodecyloxy)Phosphino]Oxy]Propoxy]-1-Methylethyl Isodecyl Phenyl Ester
CAS No.	115035-49-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Bis(isodecyloxy)phosphinyloxypropyl isodecyl phenyl phosphite; Phosphorous acid, cyclic 2,2-bis[[isodecyloxy]methyl]-1,3-propanediyl tetraisodecyl ester; Tris(isodecyl) phenyl phosphite (mixed isomer); Antioxidant 1178; Doverphos S-1178; Weston 1178; Phosphite stabilizer 1178; Isodecyl phenyl phosphite, mixed
EINECS	Contact for details

Quality Control

Our production of Phosphorous Acid, 2-[2-[[Bis(Isodecyloxy)Phosphino]Oxy]Propoxy]-1-Methylethyl Isodecyl Phenyl Ester adheres to a rigorous quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters such as phosphite content, acid value, color, and refractive index are provided 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 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 heat sources.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (Phosphite Content)	≥ 95.0%
Acid Value	≤ 1.0 mg KOH/g
Color (Pt-Co)	≤ 50
Refractive Index (n20/D)	1.470 - 1.480
Density (20°C)	0.930 - 0.960 g/mL
Hydrolytic Stability	Contact for details

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