Description

Didodecylnaphthalenesulphonic Acid is a specialized organic sulfonic acid derivative characterized by its long-chain alkyl groups. This structure imparts valuable surfactant and hydrophobic properties, making it a critical intermediate and functional additive in advanced chemical synthesis. It is essential for industries requiring high-performance emulsifiers, corrosion inhibitors, or specialized catalysts. The compound is particularly relevant for manufacturers in the petrochemical, lubricant, and specialty polymer sectors seeking to enhance product stability and performance.

Application

• As a key emulsifier and dispersant in the formulation of industrial lubricants and metalworking fluids.
• As a corrosion inhibitor intermediate for fuel and oil additives.
• As a catalyst or catalyst component in organic synthesis, particularly in alkylation and esterification reactions.
• As a surfactant precursor for the production of specialty detergents and wetting agents.
• In the research and development of ion-exchange resins and polymeric materials.
• As a stabilizer and compatibilizer in polymer blends and coatings formulations.

Basic Information

Product Name	Didodecylnaphthalenesulphonic Acid
CAS No.	40038-00-4
Molecular Formula	C34H54O3S
Molecular Weight	542.86 g/mol
Synonyms	Dinonylnaphthalenesulfonic Acid (DINNSA) related isomer; Dodecylnaphthalenesulfonic Acid; Bis(1-dodecyl)naphthalene-1-sulfonic Acid; Laurylnaphthalenesulfonic Acid; Naphthalenesulfonic acid, didodecyl-; Surfactant DDNSA; Acidic surfactant DDN; DNNSA (common abbreviation)
EINECS	Contact for details

Quality Control

Our Didodecylnaphthalenesulphonic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure consistent purity, composition, and performance. Key parameters such as acid value, sulfonic acid content, and impurity profile are verified. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance with your specifications and industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area away from heat sources and 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	Viscous liquid to paste
Color	Light yellow to amber
Identification (IR)	Conforms
Assay (Acid Value)	Min. 95% (as sulfonic acid)
Water Content	Max. 1.0%
Sulfated Ash	Max. 0.5%
Heavy Metals (as Pb)	Max. 20 ppm

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