Description

Naphthalenesulphonic Acid CAS NO 25155-19-5 is a versatile aromatic sulfonic acid derivative, primarily valued for its excellent surfactant and dispersant properties. It serves as a critical intermediate and functional additive in numerous industrial processes, offering superior wetting and solubilizing capabilities. This compound is essential for manufacturers in the construction, textile, agrochemical, and dye industries seeking to enhance product performance and process efficiency.

Application

• Concrete Plasticizer & Superplasticizer: Acts as a key raw material in the synthesis of naphthalene-based formaldehyde condensates, which are high-performance water reducers for concrete and cement formulations.
• Dye Intermediate & Dispersant: Used in the production of azo dyes and as a dispersing agent for pigments and dyes, ensuring uniform color distribution and stability.
• Agrochemical Formulations: Functions as a wetting agent, dispersant, and stabilizer in pesticides, herbicides, and fungicides, improving their efficacy and shelf life.
• Textile Auxiliary: Employed as a levelling agent and dispersant in dyeing processes, particularly for synthetic fibers, to achieve even coloration.
• Oilfield Chemicals: Utilized in drilling mud formulations as a thinner and dispersant to control rheology and fluid loss.
• Industrial Cleaning: Serves as a surfactant and acid component in heavy-duty industrial and metal cleaning formulations.
• Paper & Pulp Industry: Acts as a dispersant in paper coating formulations and in the pulping process to improve fiber separation.
• Chemical Synthesis Intermediate: A crucial building block for further chemical synthesis into various sulfonated derivatives, pharmaceuticals, and specialty chemicals.

Basic Information

Product Name	Naphthalenesulphonic Acid
CAS No.	25155-19-5
Molecular Formula	C10H8O3S
Molecular Weight	208.23 g/mol
Synonyms	Naphthalene-1-sulfonic Acid; 1-Naphthalenesulfonic Acid; α-Naphthalenesulfonic Acid; Naphthalene-1-sulphonic Acid; 1-Naphthalenesulphonic Acid; Kyselina 1-naftalensulfonova; NSC 402124; EINECS 246-673-6
EINECS	246-673-6

Quality Control

Our Naphthalenesulphonic Acid is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, composition, and performance. Certificates of Analysis (COA) are provided with every shipment, detailing key parameters such as assay, sulfonic acid content, and impurity profiles. We adhere to relevant industrial standards and can support compliance documentation for global supply chains.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture. Keep away from strong bases, oxidizing agents, and incompatible materials. For long-term storage, consider using a desiccant.

Specification

Item	Specification
Appearance	Off-white to light brown crystalline powder or flakes
Identification (IR)	Conforms
Assay (Titration)	≥ 95.0%
Moisture (KF)	≤ 5.0%
Sulfuric Acid (as H2SO4)	≤ 2.0%
Insolubles in Water	≤ 1.0%
pH (1% Solution)	Contact for details

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