Description

Dimethyl Octadecylphosphonate is a high-purity organophosphorus compound valued for its role as a versatile chemical intermediate and performance additive. Its long alkyl chain and phosphonate ester functionality make it a critical building block for synthesizing surfactants, lubricants, and flame retardants. This product is essential for manufacturers in the specialty chemicals, polymer additives, and agrochemical sectors seeking reliable raw materials for advanced formulations.

Application

• Surfactant & Detergent Intermediate: Serves as a key precursor for the synthesis of cationic and amphoteric surfactants with excellent emulsifying and wetting properties.
• Lubricant & Fuel Additive: Used in formulating extreme-pressure additives and anti-wear agents for industrial lubricants and specialty fuels.
• Flame Retardant Synergist: Acts as a reactive intermediate in the production of phosphorus-based flame retardants for polymers and textiles.
• Agrochemical Intermediate: Employed in the synthesis of organophosphorus pesticides and plant growth regulators.
• Corrosion Inhibitor Precursor: A building block for creating high-performance corrosion inhibitors used in water treatment and metalworking fluids.
• Extractant & Chelating Agent: Utilized in solvent extraction processes for metal ion separation and recovery in hydrometallurgy.
• Polymer Modification: Used to introduce phosphonate groups into polymer chains to enhance properties like adhesion, thermal stability, or hydrophilicity.

Basic Information

Product Name	Dimethyl Octadecylphosphonate
CAS No.	25371-54-4
Molecular Formula	C₂₀H₄₃O₃P
Molecular Weight	362.53 g/mol
Synonyms	Dimethyl Stearylphosphonate; Octadecylphosphonic Acid Dimethyl Ester; Stearylphosphonic Acid Dimethyl Ester; Dimethyl n-Octadecylphosphonate; NSC 163083; Phosphonic Acid, Octadecyl-, Dimethyl Ester; Dimethyl 1-Octadecanephosphonate
EINECS	Contact for details

Quality Control

Our Dimethyl Octadecylphosphonate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including assay by GC or HPLC and identity confirmation by FT-IR, to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) documenting purity, appearance, and key parameters is provided with each shipment to guarantee traceability and compliance with your technical 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 incompatible materials. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Density (20°C)	~0.90 g/mL
Refractive Index (20°C)	~1.445

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