Description

Phosphoric Acid Hydrogen Diicosyl Ester is a high-molecular-weight organophosphorus compound, specifically a diester of phosphoric acid. This chemical serves as a highly effective lubricant additive and anti-wear agent, prized for its ability to form protective films on metal surfaces under extreme pressure. It is primarily utilized by formulators in the lubricants, metalworking fluids, and specialty chemicals industries seeking to enhance the performance and longevity of their finished products.

Application

• As a key extreme pressure (EP) additive in industrial gear oils and hydraulic fluids.
• As an anti-wear and friction modifier in advanced metalworking fluids and cutting oils.
• As a performance additive in synthetic and semi-synthetic lubricants for heavy machinery.
• As a corrosion inhibitor and lubricity enhancer in specialty greases and pastes.
• As a functional intermediate for the synthesis of other phosphate ester surfactants and lubricant components.
• In formulations requiring high thermal stability and hydrolytic resistance.

Basic Information

Product Name	Phosphoric Acid Hydrogen Diicosyl Ester
CAS No.	42714-98-7
Molecular Formula	C40H83O4P
Molecular Weight	659.06 g/mol
Synonyms	Diicosyl hydrogen phosphate; Diicosyl phosphate; Di-eicosyl hydrogen phosphate; Phosphoric acid, diicosyl ester; Hydrogen diicosyl phosphate; EINECS 255-903-8; Dioctadecyl hydrogen phosphate (common name based on icosyl = eicosyl, C20); Dioctadecyl phosphate (common trade name reference)
EINECS	255-903-8

Quality Control

Our production of Phosphoric Acid Hydrogen Diicosyl Ester adheres to a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed against comprehensive specifications for purity, acid value, and other critical parameters. Certificates of Analysis (COA) documenting these results are provided and can be tailored to meet specific customer or industry 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). Keep away from strong bases and oxidizing agents. For long-term storage, consider under an inert atmosphere to minimize moisture uptake and oxidation.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid or solid
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 95.0%
Acid Value	Contact for details
Moisture (KF)	≤ 0.5%
Heavy Metals	≤ 10 ppm

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