Description

Tris(2-Phenoxyethyl) Phosphite is a versatile organophosphorus compound widely utilized as a high-performance stabilizer and intermediate. Its primary commercial value lies in its ability to function as an effective antioxidant and chelating agent, protecting materials from degradation caused by heat, light, and oxidation. This makes it a critical additive for manufacturers in the polymer, lubricant, and specialty chemical industries seeking to enhance product longevity and performance under demanding conditions.

Application

• Polymer Stabilizer: Acts as a secondary antioxidant and metal deactivator in polyolefins (e.g., PP, PE), PVC, and engineering plastics to prevent thermal and oxidative degradation during processing and end-use.
• Lubricant & Grease Additive: Enhances the oxidative stability of synthetic and mineral-based lubricants and greases, extending service life and reducing sludge formation.
• Synergistic Antioxidant: Used in combination with primary phenolic antioxidants to provide superior stabilization effects in various hydrocarbon-based systems.
• Chemical Intermediate: Serves as a key building block in the synthesis of more complex phosphite and phosphate esters for specialized applications.
• Adhesive & Sealant Formulation: Improves the aging resistance and durability of adhesives, sealants, and caulks by scavenging peroxides.
• Rubber Compounding: Contributes to the heat stability of synthetic rubber compounds, aiding in processing and final product performance.

Basic Information

Item	Detail
Product Name	Tris(2-Phenoxyethyl) Phosphite
CAS No.	4486-47-9
Molecular Formula	C24H27O6P
Molecular Weight	442.44 g/mol
Synonyms	Tris(2-phenoxyethyl) phosphite; Phosphorous acid, tris(2-phenoxyethyl) ester; 2-Phenoxyethanol phosphite (3:1); Ethanol, 2-phenoxy-, phosphite (3:1); Antage P; Irgastab TPP; Antioxidant TPP; Phenyl Cellosolve Phosphite; Tris(β-phenoxyethyl) phosphite; Phenoxyethyl phosphite (tri-ester)
EINECS	224-777-3

Quality Control

Our Tris(2-Phenoxyethyl) Phosphite is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, color, and chemical identity. Certificates of Analysis (COA) documenting key parameters are provided to guarantee batch-to-batch consistency and compliance with your formulation requirements.

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 product is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Acidity (as H3PO4)	≤ 0.1 %
Color (APHA)	≤ 50
Refractive Index (n20D)	1.550 - 1.560
Density (20°C)	1.18 - 1.22 g/cm³

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