Description

Isodecyl Phenyl Hydrogen Phosphite is a specialized organophosphorus compound widely utilized as a high-performance stabilizer and intermediate. This product is critical for enhancing the durability and longevity of polymers by effectively scavenging free radicals and decomposing hydroperoxides. It is an essential additive for manufacturers in the plastics, synthetic lubricant, and rubber industries seeking to improve product thermal stability and color retention.

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 and oxidative degradation during processing and service life.
• Synthetic Lubricant Additive: Used as an anti-wear and extreme pressure (EP) agent in advanced synthetic lubricants and hydraulic fluids to enhance performance under high-stress conditions.
• Rubber Industry: Employed as a non-discoloring stabilizer in synthetic rubber production to maintain elasticity and prevent aging caused by heat and oxygen.
• Chemical Intermediate: Serves as a key building block in the synthesis of more complex phosphite and phosphate esters for specialized applications.
• Adhesives and Sealants: Incorporated to improve the thermal stability and weatherability of high-performance adhesive formulations.

Basic Information

Product Name	Isodecyl Phenyl Hydrogen Phosphite
CAS No.	68311-09-1
Molecular Formula	C16H27O3P
Molecular Weight	298.36 g/mol
Synonyms	Phosphorous acid, isodecyl phenyl ester; Isodecyl phenyl phosphite; Phenol, isodecyl hydrogen phosphite; Hydrogen isodecyl phenyl phosphite; Isodecyloxyphenyl phosphonite; IDPHP; Antioxidant 698; Weston 618
EINECS	Contact for details

Quality Control

Our Isodecyl Phenyl Hydrogen Phosphite is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including assay, color, acidity, and refractive index measurement, to ensure it meets precise specifications and consistent performance. Certificates of Analysis (COA) are provided with every shipment, and we support compliance with relevant global regulatory frameworks such as REACH.

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 exclude moisture. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Acidity (as H3PO4)	≤ 0.1 %
Color (APHA)	≤ 50
Refractive Index (n20D)	1.5050 - 1.5150
Density (20°C)	1.010 - 1.040 g/cm³

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