Description

Phosphoric Acid, C16-18-Alkyl Esters, Sodium Salts is a high-performance anionic surfactant derived from the esterification of phosphoric acid with a blend of C16-C18 fatty alcohols, subsequently neutralized to its sodium salt form. This compound is valued for its excellent emulsifying, dispersing, and wetting properties, making it a critical additive in formulations requiring stability and surface activity. It is primarily sought by manufacturers in the personal care, industrial cleaning, textile processing, and agrochemical industries for its versatility and effectiveness.

Application

• Personal Care & Cosmetics: Acts as a primary or co-emulsifier and surfactant in creams, lotions, and hair care products, providing stable emulsions and a smooth skin feel.
• Industrial & Institutional (I&I) Cleaners: Serves as a key component in heavy-duty degreasers, metal cleaners, and alkaline formulations due to its excellent emulsification of oils and fats.
• Textile Processing: Used as a wetting agent, lubricant, and antistatic agent in fiber processing, dyeing, and finishing operations.
• Agrochemicals: Functions as an emulsifier and dispersant in pesticide and herbicide formulations, enhancing the stability and efficacy of active ingredients.
• Paints & Coatings: Employed as a pigment dispersant and grinding aid to improve color development and stability in water-based systems.
• Metalworking Fluids: Provides lubrication and emulsification in synthetic and semi-synthetic metalworking coolants and drawing compounds.

Basic Information

Product Name	Phosphoric Acid, C16-18-Alkyl Esters, Sodium Salts
CAS No.	90506-51-7
Molecular Formula	Typically a mixture; CnH2n+1OP(O)(ONa)2 / (CnH2n+1O)2P(O)ONa where n=16-18
Molecular Weight	Mixture; Contact for details
Synonyms	Sodium C16-18 Alkyl Phosphate; C16-18 Alcohol Phosphate, Sodium Salt; Sodium Hexadecyl/Stearyl Phosphate; Phosphoric Acid Mono- and Di-C16-18 Alkyl Esters, Sodium Salts; Alkyl (C16-18) Phosphate, Sodium Salt; Surfactant PA-18S (Trade Name); Hostaphat® KL 340 N (Typical Trade Name); Antistatic Agent SN (Common Name)
EINECS	Contact for details

Quality Control

Our Phosphoric Acid, C16-18-Alkyl Esters, Sodium Salts is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including assay of active matter, pH, and moisture content. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing all relevant specifications. Our production adheres to ISO 9001 standards, and the product can be supplied in grades suitable for cosmetic (following relevant cosmetic ingredient regulations) and industrial 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). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white paste or solid
Identification (IR)	Complies
Assay (Active Matter)	≥ 95.0 %
Moisture (Karl Fischer)	≤ 2.0 %
pH (10% Solution)	6.0 - 8.5
Free Fatty Alcohol	≤ 3.0 %
Heavy Metals (as Pb)	≤ 10 ppm

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