Description

1-Octadecanesulfonic Acid is a high-purity, long-chain alkylsulfonic acid with significant utility as a surfactant intermediate and analytical reagent. Its value lies in its ability to act as a strong anionic surfactant precursor and an ion-pairing agent for chromatographic separations. This compound is essential for manufacturers and R&D laboratories in the chemical synthesis, pharmaceutical, and analytical chemistry sectors.

Application

• Surfactant & Detergent Intermediate: A key raw material for synthesizing specialized anionic surfactants, emulsifiers, and wetting agents.
• Ion-Pairing Reagent: Used in High-Performance Liquid Chromatography (HPLC) for the separation of basic compounds, peptides, and pharmaceuticals.
• Chemical Synthesis: Serves as a catalyst or reagent in organic synthesis, particularly in esterification and alkylation reactions.
• Corrosion Inhibitor Formulation: An active component in formulations designed to protect metals in industrial processes.
• Textile & Leather Processing: Employed as a leveling agent, dyeing assistant, and softening agent in treatment baths.
• Laboratory Research: Used as a standard or reagent in various analytical and research applications.

Basic Information

Product Name	1-Octadecanesulfonic Acid
CAS No.	6140-87-0
Molecular Formula	C₁₈H₃₈O₃S
Molecular Weight	334.56 g/mol
Synonyms	Octadecylsulfonic Acid; Stearylsulfonic Acid; n-Octadecanesulfonic Acid; Octadecane-1-sulfonic Acid; Stearic sulfonic acid; C18 Sulfonic Acid; 1-Sulfonoctadecane; Alkane (C18) sulfonic acid
EINECS	228-165-8

Quality Control

Our 1-Octadecanesulfonic Acid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed specifications. We support traceability and documentation for cGMP and ISO 9001-aligned 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) and should be handled in a dry environment to prevent degradation. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	95 - 105 °C
Loss on Drying	≤ 2.0 %
Sulfated Ash	≤ 0.5 %

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