Description

2-Ethanediyl), .Alpha.,.Alpha.'-[(Octadecyloxy)Phosphinylidene]Bis[.Omega.-Hydroxy-Poly(Oxy-1 is a specialized organophosphorus compound, specifically a phosphonate ester with a polyoxyethylene chain, known by its CAS number 99817-91-1. This chemical is valued for its dual functionality, acting as a surfactant, dispersant, and potential chelating agent due to its unique molecular structure. It is primarily needed by formulators in industries such as agrochemicals, personal care, textiles, and industrial cleaning, where it enhances product stability and performance.

Application

• Agrochemical Formulations: Acts as a wetting agent, dispersant, and stabilizer in pesticide and herbicide concentrates.
• Personal Care & Cosmetics: Used as an emulsifier and conditioning agent in creams, lotions, and hair care products.
• Textile Processing: Serves as a leveling agent and dye dispersant to ensure uniform color application.
• Industrial & Institutional (I&I) Cleaning: Functions as a surfactant and scale inhibitor in hard surface cleaners and detergent formulations.
• Water Treatment: Potential application as a corrosion and scale inhibitor in cooling and boiler water systems.
• Polymer & Resin Production: Can be utilized as a processing aid and internal lubricant.
• Metal Working Fluids: Employed as an additive for lubrication and rust prevention.
• Paints & Coatings: Acts as a pigment grinding aid and dispersant to improve color development and stability.

Basic Information

Product Name	2-Ethanediyl), .Alpha.,.Alpha.'-[(Octadecyloxy)Phosphinylidene]Bis[.Omega.-Hydroxy-Poly(Oxy-1
CAS No.	99817-91-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Poly(oxy-1,2-ethanediyl), α,α'-[(octadecyloxy)phosphinylidene]bis[ω-hydroxy-; PEG-xxx (number varies) stearyl phosphate; Stearyl PEG phosphate; Phosphonic acid, P,P'-[oxybis(2,1-ethanediyloxy)]bis-, dioctadecyl ester; Polyethylene glycol stearyl ether phosphate; Organophosphorus surfactant 99817-91-1; Dispersant 99817-91-1
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. We implement strict in-process controls and final batch analysis. Certificates of Analysis (COA) detailing key parameters such as assay, pH, moisture content, and heavy metals are available upon request. Our quality management system supports compliance with relevant guidelines for industrial and specialty chemical 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and performance.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms
Assay (Titration)	≥ 95.0%
pH (10% solution)	5.0 - 7.0
Water Content (KF)	≤ 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.