Description

Trilauryl Phosphite is a high-purity organophosphorus compound widely used as a versatile intermediate and stabilizer. Its primary commercial value lies in its effectiveness as an antioxidant and chelating agent, protecting materials from degradation. This product is essential for manufacturers in the polymer, lubricant, and specialty chemical industries seeking to enhance product longevity and performance. We supply consistent, high-quality material to meet the rigorous demands of global industrial applications.

Application

• Polymer Stabilizer: Acts as a highly effective antioxidant and secondary stabilizer in polyolefins (e.g., PP, PE) and other polymers to prevent thermal and oxidative degradation during processing and service life.
• Lubricant & Grease Additive: Serves as an anti-wear and extreme pressure (EP) additive, as well as an antioxidant, in synthetic and mineral-based lubricants and industrial greases.
• Chemical Intermediate: Used in the synthesis of more complex organophosphorus compounds, including other phosphite esters and phosphonates, for various specialty applications.
• Metal Chelator/Deactivator: Functions as a metal deactivator in fuels and polymers, chelating trace metal ions that can catalyze undesirable oxidation reactions.
• Adhesive & Sealant Formulation: Incorporated as a stabilizer in hot-melt and reactive adhesive systems to prevent viscosity increase and maintain performance over time.
• Rubber Industry: Used as a non-staining antioxidant in synthetic rubber production and processing to protect against heat aging.

Basic Information

Product Name	Trilauryl Phosphite
CAS No.	3076-63-9
Molecular Formula	C36H75O3P
Molecular Weight	586.94 g/mol
Synonyms	Phosphorous Acid Trilauryl Ester; Trilauryl Phosphite; Dodecyl Phosphite (Triester); Tris(Dodecyl) Phosphite; Lauryl Phosphite; Tris(n-Dodecyl) Phosphite; TLP; Antioxidant TLP; Hostanox® PAR 24 (Trade Name); Doverphos® 675 (Trade Name)
EINECS	221-356-5

Quality Control

Our Trilauryl Phosphite is manufactured under a strict quality management system to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analytical testing, including assay, color, and acidity determination, to meet exacting customer specifications. A Certificate of Analysis (COA) documenting purity and key physical properties is provided with every shipment to support your quality assurance protocols.

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

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (GC or Titration)	≥ 95.0%
Acidity (as H3PO4)	≤ 0.5 %
Color (APHA)	≤ 100
Refractive Index (nD20)	1.455 - 1.465
Density (g/mL at 20°C)	0.88 - 0.92

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