Description

Phenyl Ditetradecyl Phosphite is a high-performance organophosphite antioxidant and stabilizer widely used in polymer processing. This compound is critical for preventing thermal and oxidative degradation, thereby extending the service life and maintaining the physical properties of sensitive materials. It is an essential additive for manufacturers in the plastics, synthetic rubber, and specialty lubricant industries seeking to enhance product durability and performance under demanding conditions.

Application

• Primary antioxidant and stabilizer for polyolefins (PP, PE) and engineering plastics to prevent thermal degradation during processing.
• Effective color and melt flow stabilizer in polymer resins, helping to maintain clarity and processability.
• Used as a synergistic co-stabilizer in combination with primary phenolic antioxidants to enhance overall stabilization systems.
• Application in synthetic lubricants and greases to improve oxidative stability and prevent sludge formation.
• Stabilizer component for adhesives, sealants, and elastomers to protect against heat and oxygen-induced aging.
• Used in the production of plastic films and fibers where long-term stability is required.

Basic Information

Product Name	Phenyl Ditetradecyl Phosphite
CAS No.	59972-95-1
Molecular Formula	C₄₁H₇₇O₃P
Molecular Weight	649.0 g/mol
Synonyms	Phosphorous Acid, Isotetradecyl Phenyl Ester; Phenol, Isotetradecyl Phosphite; Phenyl Diisotetradecyl Phosphite; PDDTP; Antioxidant PDDTP; Phenyl Bis(tetradecyl) Phosphite; Tetradecanol, Phosphite with Phenol; Stabilizer 59972-95-1
EINECS	Contact for details

Quality Control

Our Phenyl Ditetradecyl Phosphite is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is analyzed against rigorous internal specifications, which typically include assay, color, acidity, and refractive index. A Certificate of Analysis (COA) documenting these results is provided with every shipment to guarantee compliance with your technical 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 material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0 %
Acidity (as Phosphorous Acid)	≤ 0.5 %
Color (APHA)	≤ 50
Refractive Index (n20/D)	1.4680 - 1.4720
Moisture (KF)	≤ 0.1 %

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