Description

Disodium 2-Sulphonatooctadecanoate is a high-purity, anionic surfactant derived from stearic acid. This compound is valued for its excellent emulsifying, dispersing, and wetting properties in aqueous systems. It is a critical ingredient for formulators in the personal care, textile, and industrial cleaning sectors seeking stable and effective anionic actives.

Application

• Personal Care & Cosmetics: Used as a primary surfactant and emulsifier in shampoos, body washes, facial cleansers, and shaving creams for its rich lather and mildness.
• Textile Processing: Serves as a wetting agent, dispersant, and leveling agent in dyeing and finishing processes to ensure uniform color application.
• Industrial & Institutional (I&I) Cleaning: A key component in liquid soaps, hard surface cleaners, and degreasers for its effective soil removal and emulsification of oils.
• Emulsion Polymerization: Acts as a stabilizer and emulsifier in the production of synthetic rubbers, latex paints, and acrylic polymers.
• Agricultural Formulations: Employed as an adjuvant in pesticide and herbicide formulations to enhance spreading and adhesion on plant surfaces.
• Leather Processing: Functions as a fatliquoring agent and emulsifier in leather tanning and finishing to improve softness and quality.

Basic Information

Product Name	Disodium 2-Sulphonatooctadecanoate
CAS No.	5802-91-5
Molecular Formula	C₁₈H₃₄Na₂O₅S
Molecular Weight	408.50 g/mol
Synonyms	Disodium 2-Sulfonatooctadecanoate; Disodium α-Sulfostearate; Sodium 2-Sulfostearate; Sulfonated Stearic Acid, Disodium Salt; Octadecanoic Acid, 2-Sulfo-, Disodium Salt; Stearic Acid Sulfonate, Disodium Salt; Anionic Surfactant S18; AES-S (related class)
EINECS	Contact for details

Quality Control

Our Disodium 2-Sulphonatooctadecanoate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity, performance, and compliance with relevant specifications for its intended applications. A Certificate of Analysis (COA) detailing assay, impurity profile, and physical parameters is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the original container tightly sealed to prevent absorption of atmospheric moisture which may lead to caking or reduced efficacy.

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 95.0 %
Water Content	≤ 5.0 %
pH (10% Solution)	7.0 - 9.0
Heavy Metals (as Pb)	≤ 20 ppm

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