Description

Octadecylxylenesulphonic Acid is a high-purity, long-chain alkyl aromatic sulfonic acid derivative. This specialty surfactant intermediate is valued for its excellent emulsifying, wetting, and dispersing properties in demanding formulations. It is primarily utilized by manufacturers in the agrochemical, lubricant additive, and industrial cleaning sectors for producing high-performance anionic surfactants and acid catalysts.

Application

• Agrochemical Formulations: Acts as a key emulsifier and wetting agent in the production of concentrated herbicide and pesticide emulsions.
• Lubricant & Fuel Additives: Serves as a precursor for manufacturing detergents and dispersant additives in engine oils and industrial lubricants.
• Industrial & Institutional (I&I) Cleaning: Used in the synthesis of acid-based cleaners and degreasers for heavy-duty applications.
• Textile & Leather Processing: Functions as a dyeing assistant, leveling agent, and emulsifier in various wet-processing stages.
• Polymerization & Catalysis: Employed as an acid catalyst or emulsifier in specific emulsion polymerization processes.
• Metal Working Fluids: Incorporated as a component in synthetic and semi-synthetic metalworking fluids for corrosion inhibition and emulsification.

Basic Information

Product Name	Octadecylxylenesulphonic Acid
CAS No.	55121-81-8
Molecular Formula	C₂₆H₄₆O₃S
Molecular Weight	438.71 g/mol
Synonyms	Octadecyl xylenesulfonic acid; Stearyl xylenesulfonic acid; n-Octadecyl-o-xylene sulfonic acid; 4-Octadecyl-1,2-dimethylbenzenesulfonic acid; C18 alkyl xylenesulfonic acid; Long-chain alkylxylenesulphonic acid; Surfactant AS-18 (related trade name series); Anionic surfactant intermediate
EINECS	Contact for details

Quality Control

Our Octadecylxylenesulphonic Acid is manufactured under a strict quality management system. Each batch is analyzed to ensure it meets precise chemical and physical specifications, including assay, color, and moisture content. A comprehensive Certificate of Analysis (COA) documenting purity and key parameters is provided with every shipment to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Due to its strong acid nature, containers should be kept tightly sealed to prevent moisture absorption and potential corrosion. Recommended storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	Light yellow to amber viscous liquid
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 95.0 %
Color (Gardner)	≤ 8
Moisture (KF)	≤ 1.0 %
Free Sulfuric Acid	≤ 2.0 %
Specific Gravity (25°C)	0.95 - 1.05

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