Description

Di-n-Octadecyl Phosphate is a high-purity, long-chain organophosphorus compound widely used as a specialty additive and intermediate. Its unique amphiphilic structure provides excellent surface-active properties, making it valuable for modifying material interfaces and enhancing performance. This product is essential for manufacturers in the polymer, lubricant, and specialty chemical industries seeking to improve product stability and functionality.

Application

• Polymer Additive: Acts as an internal lubricant, acid scavenger, and anti-static agent in polyolefin and engineering plastic processing.
• Lubricant & Grease Formulation: Serves as an extreme pressure (EP) additive and friction modifier in synthetic lubricants and industrial greases.
• Corrosion Inhibitor: Used in protective coatings and metalworking fluids to form stable, hydrophobic layers on metal surfaces.
• Emulsifier & Dispersant: Functions as a non-ionic surfactant for stabilizing emulsions and dispersing pigments in various formulations.
• Extraction Agent: Employed in solvent extraction processes for the separation and recovery of metal ions.
• Pharmaceutical & Cosmetic Intermediate: Utilized in the synthesis of phospholipid analogs and other bioactive molecules for advanced applications.

Basic Information

Product Name	Di-n-Octadecyl Phosphate
CAS No.	3037-89-6
Molecular Formula	C₃₆H₇₅O₄P
Molecular Weight	602.96 g/mol
Synonyms	Dioctadecyl phosphate; Di-stearyl phosphate; Phosphoric acid dioctadecyl ester; Dioctadecyl hydrogen phosphate; Distearyl hydrogen phosphate; n-Octadecyl phosphate (di-); DSP; ODPA
EINECS	221-235-8

Quality Control

Our Di-n-Octadecyl Phosphate is manufactured under a strict quality management system. Each batch is analyzed to ensure it meets precise chemical and physical specifications, with purity typically exceeding 95%. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and impurity profiles is provided with every shipment to guarantee consistent quality and traceability for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong bases and incompatible materials. The container must be kept tightly closed to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Melting Point	70 - 75 °C
Acid Value	90 - 100 mg KOH/g
Loss on Drying	≤ 1.0 %
Heavy Metals (as Pb)	≤ 10 ppm

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