Description

Disodium Octadecyl Phosphate is an anionic surfactant and emulsifier derived from stearyl alcohol and phosphoric acid. This compound is valued for its excellent emulsifying, dispersing, and antistatic properties in various industrial formulations. It is a key ingredient for manufacturers in the personal care, textile, and plastics industries seeking stable emulsions and enhanced material performance.

Application

• Personal Care & Cosmetics: Acts as a primary emulsifier and stabilizer in creams, lotions, and hair conditioners, providing a smooth texture and stable formulations.
• Textile Processing: Used as a softening agent, antistatic agent, and lubricant in fiber and yarn manufacturing to improve processability and final fabric hand-feel.
• Plastics & Polymer Additives: Functions as an internal and external antistatic agent for polymers like polyethylene (PE) and polypropylene (PP), and as a processing aid.
• Metalworking Fluids: Serves as an emulsifier and corrosion inhibitor in synthetic and semi-synthetic metalworking coolants and lubricants.
• Agricultural Formulations: Employed as an emulsifier and dispersant in pesticide and herbicide concentrates to ensure stable spray solutions.
• Industrial Cleaners: Used in heavy-duty degreasers and industrial cleaning products for its emulsifying power on oils and fats.

Basic Information

Product Name	Disodium Octadecyl Phosphate
CAS No.	35177-76-5
Molecular Formula	C₁₈H₃₇Na₂O₄P
Molecular Weight	392.43 g/mol
Synonyms	Disodium Stearyl Phosphate; Octadecylphosphonic Acid Disodium Salt; Sodium Stearyl Phosphate; DSP; Disodium Monostearyl Phosphate; Phosphoric Acid, Monooctadecyl Ester, Disodium Salt; STEPAN-MILD SP3; Arlatone MAP 160K
EINECS	252-404-4

Quality Control

Our Disodium Octadecyl Phosphate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, performance, and compliance with relevant industry standards. A comprehensive Certificate of Analysis (COA) detailing assay, identification, and impurity profiles is provided with every shipment.

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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture which may affect product quality.

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Identification (IR)	Conforms
Assay (Titration)	≥ 95.0 %
pH (1% Solution)	6.0 - 8.0
Loss on Drying	≤ 2.0 %
Heavy Metals (as Pb)	≤ 10 ppm

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