Description

2-Sulfooctadecanoic acid is a high-purity, long-chain sulfonated fatty acid derivative, also known as 2-Sulfooctadecanoic CAS NO 1115-17-9. This specialty surfactant is valued for its unique combination of hydrophobic alkyl chain and hydrophilic sulfonic acid group, offering excellent emulsifying, wetting, and dispersing properties. It is a critical intermediate and functional additive for manufacturers in the personal care, textile processing, and specialty chemical synthesis industries seeking to enhance product performance and stability.

Application

• Surfactant & Emulsifier: Key component in the formulation of high-performance detergents, industrial cleaners, and emulsion polymerization processes.
• Personal Care Products: Used in shampoos, body washes, and skincare formulations as a mild surfactant and viscosity modifier.
• Textile Auxiliary: Functions as a wetting agent, leveling agent, and softener in dyeing and finishing processes for natural and synthetic fibers.
• Lubricant & Metalworking Additive: Serves as an extreme pressure additive and corrosion inhibitor in synthetic lubricants and metalworking fluids.
• Chemical Synthesis Intermediate: Important building block for the production of more complex sulfonated esters, amides, and other specialty chemicals.
• Paper & Pulp Industry: Acts as a dispersant and deinking agent in paper coating and recycling operations.
• Agricultural Adjuvants: Enhances the spreading and adhesion of pesticides and herbicides on plant surfaces.

Basic Information

Product Name	2-Sulfooctadecanoic Acid
CAS No.	1115-17-9
Molecular Formula	C₁₈H₃₆O₅S
Molecular Weight	364.55 g/mol
Synonyms	2-Sulfostearic Acid; Octadecanoic Acid, 2-Sulfo-; Stearic Acid, 2-Sulfo-; 2-Sulfonatooctadecanoic Acid; α-Sulfostearic Acid; Sulfonated Stearic Acid; 2-Sulfooctadecanoic Acid Sodium Salt (common salt form); 2-SAS
EINECS	214-228-9

Quality Control

Our 2-Sulfooctadecanoic acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, composition, and performance. Certificates of Analysis (COA) detailing key parameters such as assay, sulfonic acid content, and impurity profiles are provided with every shipment to guarantee consistent quality and traceability for your production needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be kept under dry conditions to prevent caking or degradation. Keep away from strong acids and organic solvents.

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 95.0 %
Sulfonic Acid Content	≥ 85.0 %
Loss on Drying	≤ 2.0 %
Residue on Ignition (Sulfated Ash)	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm

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