Description

Phosphorous Acid Triisodecyl Ester is an organophosphorus compound widely utilized as a high-performance intermediate and additive. Its primary commercial value lies in its role as a versatile chemical building block and a key component in the formulation of advanced lubricants and stabilizers. This product is essential for manufacturers in the polymer, lubricant, and specialty chemical industries seeking to enhance product performance and longevity.

Application

• As a key intermediate in the synthesis of organophosphorus flame retardants and plasticizers.
• Functioning as an anti-wear and extreme pressure (EP) additive in advanced synthetic lubricants and hydraulic fluids.
• Used as a stabilizer and antioxidant in polymer processing to prevent thermal degradation.
• Employed as a chelating agent and corrosion inhibitor in specialty metalworking fluids and industrial formulations.
• Serving as a precursor for the production of other phosphate and phosphite esters.
• Potential use as a synergist in combination with other antioxidants for enhanced stabilization effects.

Basic Information

Product Name	Phosphorous Acid Triisodecyl Ester
CAS No.	25448-25-3
Molecular Formula	C30H63O3P
Molecular Weight	502.79 g/mol
Synonyms	Triisodecyl Phosphite; Phosphorous Acid Triisodecyl Ester; Tris(isodecyl) Phosphite; Isodecyl Phosphite (tris-); TIDP; P-310; Weston TIDP; Antioxidant TIDP; Tris(8-methylnonyl) Phosphite
EINECS	246-979-5

Quality Control

Our Phosphorous Acid Triisodecyl Ester is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high purity. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as assay, acid value, color, and specific gravity. We adhere to relevant industry standards, and our quality protocols are designed to meet the specific requirements of our global B2B partners.

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, it is recommended to keep the container under an inert atmosphere (e.g., nitrogen) to maintain optimal quality and performance.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Assay (by Titration)	≥ 95.0 %
Acid Value	≤ 1.0 mg KOH/g
Color (APHA)	≤ 50
Specific Gravity (20/20°C)	0.890 - 0.910
Refractive Index (n20D)	1.4530 - 1.4570
Phosphorus Content	5.8 - 6.2 %
Moisture (Karl Fischer)	≤ 0.1 %

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