Description

Phosphonic Acid Diheptadecyl Ester is a high-purity, long-chain organophosphorus compound. This specialty chemical serves as a highly effective intermediate and functional additive, valued for its unique hydrophobic and chelating properties. It is primarily utilized by manufacturers in the polymer, lubricant, and specialty surfactant industries seeking to enhance product performance and stability.

Application

• As a key intermediate in the synthesis of advanced organophosphorus flame retardants and plasticizers.
• Functioning as a stabilizer and chelating agent in polymer processing to mitigate degradation from trace metal catalysts.
• Employed as a corrosion inhibitor and extreme-pressure additive in advanced lubricant and grease formulations.
• Utilized in the production of specialty surfactants and emulsifiers for industrial applications requiring hydrophobic character.
• Acting as a surface modifier and coupling agent in composite materials and pigment dispersions.
• Serving as a precursor for the manufacture of other phosphonate esters with tailored chain lengths.

Basic Information

Product Name	Phosphonic Acid Diheptadecyl Ester
CAS No.	71889-09-3
Molecular Formula	C₃₄H₇₁O₃P
Molecular Weight	558.89 g/mol
Synonyms	Diheptadecyl Phosphonate; Heptadecanol, hydrogen phosphite; Di-n-heptadecyl Phosphonate; Phosphonic Acid, Diheptadecyl Ester; Hydrogen Diheptadecyl Phosphite; Diheptadecyl Hydrogen Phosphite; n-Heptadecyl Phosphonate (di-); CAS 71889-09-3
EINECS	Contact for details

Quality Control

Our Phosphonic Acid Diheptadecyl Ester is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay and impurity profile determination, to ensure it meets stringent specifications for industrial applications. Certificates of Analysis (COA) documenting purity, identity, and key physical parameters are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and organic solvents. Recommended storage temperature is 15-25°C. The container must be kept tightly sealed to minimize moisture absorption and contamination.

Specification

Item	Specification
Appearance	White to off-white waxy solid or flakes
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Melting Point	Contact for details
Heavy Metals	< 10 ppm
Loss on Drying	< 0.5%

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