Description

Poly(Dipropyleneglycol)Phenyl Phosphite is a specialized organophosphite compound widely used as a high-performance secondary antioxidant and process stabilizer in polymer chemistry. Its primary value lies in its ability to effectively decompose hydroperoxides, thereby preventing oxidative degradation and chain scission during the high-temperature processing and long-term service life of various polymers. This product is essential for manufacturers in the plastics, synthetic fiber, and elastomer industries seeking to enhance the thermal stability and color retention of their materials.

Application

• Polymer Stabilization: Acts as a secondary antioxidant (hydroperoxide decomposer) in polyolefins (PP, PE), polyesters (PET, PBT), and engineering plastics to prevent thermal and oxidative degradation during processing and end-use.
• Color Stabilizer: Used in conjunction with primary antioxidants to inhibit yellowing and maintain the color integrity of clear and pigmented plastic products.
• Synergistic Formulations: Employed in synergistic stabilization systems with primary phenolic antioxidants (e.g., Irganox 1010) to provide comprehensive protection against polymer aging.
• Fiber and Film Production: Enhances the melt stability and processability of synthetic fibers and films, reducing gel formation and improving surface quality.
• Adhesive and Sealant Chemistry: Serves as a stabilizer in hot-melt adhesives and polyurethane systems to prevent viscosity build-up and maintain performance properties.
• Elastomer Processing: Applied in the production of synthetic rubbers to protect against heat-induced degradation during compounding and vulcanization.

Basic Information

Product Name	Poly(Dipropyleneglycol)Phenyl Phosphite
CAS No.	80584-86-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Phenyl di(propyleneglycol) phosphite; Dipropylene glycol phenyl phosphite; Phosphorous acid, phenyl bis(2-methyl-2-oxiranylmethyl) ester; Antioxidant PDGP; Weston PDGP; Poly(oxy-1,2-ethanediyl), α-hydro-ω-hydroxy-, ether with α-phenyl-ω-hydroxypoly(oxy-1,2-ethanediyl) phosphite; Stabilizer 210; Phosphite stabilizer PDGP
EINECS	Contact for details

Quality Control

Our Poly(Dipropyleneglycol)Phenyl Phosphite is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, color, acidity, and phosphite content, guaranteeing consistent performance as a polymer stabilizer. Certificates of Analysis (COA) documenting these parameters are available upon request to support your quality assurance and regulatory compliance needs.

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 easily oxidized; containers should be kept tightly sealed under an inert atmosphere (e.g., nitrogen) after opening to maintain product integrity.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Phosphite Content)	≥ 95.0 %
Acidity (as H3PO4)	≤ 0.5 %
Color (APHA)	≤ 100
Refractive Index (n20D)	1.480 - 1.490
Density (20°C)	1.10 - 1.20 g/cm³
Water Content	≤ 0.1 %

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