Description

Dilauryl Phosphite, Tech., 85 is a technical-grade organophosphorus compound widely used as a high-performance antioxidant and stabilizer. This product is essential for preventing oxidative degradation and maintaining the integrity of sensitive materials during processing and long-term storage. It is a critical additive for manufacturers in the polymer, lubricant, and specialty chemical industries seeking to enhance product shelf life and performance under demanding conditions.

Application

• Primary antioxidant and stabilizer in polyolefins (e.g., PP, PE) and other polymers to prevent thermal and oxidative degradation during processing.
• Effective secondary antioxidant in synergistic systems with primary phenolic antioxidants for enhanced polymer stabilization.
• Key additive in synthetic lubricants and greases to inhibit oxidation and sludge formation, extending service life.
• Stabilizer component in adhesives, sealants, and elastomers to prevent premature aging and maintain flexibility.
• Used in the formulation of plasticizers and PVC stabilizers to improve color retention and heat stability.
• Intermediate for the synthesis of other specialty phosphite and phosphate esters with tailored properties.

Basic Information

Product Name	Dilauryl Phosphite, Tech., 85
CAS No.	21302-90-9
Molecular Formula	C24H51O3P
Molecular Weight	418.63 g/mol
Synonyms	Dilauryl Phosphite; Di-n-dodecyl Phosphite; Didodecyl Phosphite; Phosphorous Acid, Di-n-dodecyl Ester; Lauryl Phosphite (mixture); DLTP; Antioxidant DLTP; Weston DLTP; Hostanox PAR 24; Doverphos 675
EINECS	244-316-9

Quality Control

Our technical-grade Dilauryl Phosphite is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets consistent performance criteria for its intended industrial applications. While not manufactured to pharmacopeial standards, our quality protocols ensure reliable purity and functional performance. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and key physical parameters is provided with each shipment.

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; it is recommended to store under an inert atmosphere (e.g., nitrogen) after opening to maintain product integrity. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (Dilauryl Phosphite)	≥ 85.0 %
Acidity (as H3PO3)	≤ 1.0 %
Color (APHA)	≤ 50
Moisture (Karl Fischer)	≤ 0.2 %
Phosphorus Content	6.5 - 7.5 %

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