Description

Naphthalenetrisulfonic Acid is a versatile aromatic sulfonic acid derivative, primarily valued for its role as a key intermediate in the synthesis of more complex chemical structures. Its significance lies in its ability to introduce sulfonic acid groups, which impart water solubility, dye affinity, and dispersant properties to final products. This compound is essential for manufacturers in the dye, pigment, and specialty chemical industries seeking to develop high-performance formulations.

Application

• Dye and Pigment Intermediate: A crucial building block for the synthesis of acid dyes, direct dyes, and organic pigments, enhancing color fastness and solubility.
• Concrete Admixtures: Used in the production of polycarboxylate ether (PCE) superplasticizers and other water-reducing agents to improve concrete workability and strength.
• Textile Auxiliaries: Serves as a component in leveling agents, dispersants, and dyeing assistants for synthetic fibers.
• Paper Chemicals: Acts as a dispersant and retention aid in paper coating and pulp processing.
• Oilfield Chemicals: Employed in formulations for scale inhibitors and drilling fluid additives.
• Pharmaceutical Synthesis: Functions as a sulfonating agent and intermediate in the production of certain active pharmaceutical ingredients (APIs).
• Catalyst and Resin Manufacturing: Used in ion-exchange resins and as a catalyst or co-catalyst in organic synthesis reactions.

Basic Information

Product Name	Naphthalenetrisulfonic Acid
CAS No.	28802-83-7
Molecular Formula	C10H8O9S3
Molecular Weight	368.36 g/mol
Synonyms	1,3,6-Naphthalenetrisulfonic Acid; Naphthalene-1,3,6-trisulfonic Acid; Trisodium 1,3,6-Naphthalenetrisulfonate (salt form); NTSA; Naphthalene Trisulfonic Acid; 1-Naphthol-3,6,8-trisulfonic Acid (related derivative); Naphthalenetrisulfonate; H-acid related intermediate
EINECS	Contact for details

Quality Control

Our Naphthalenetrisulfonic Acid is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and consistency. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing key parameters such as assay, sulfonic acid content, and impurity profiles. Our quality commitment supports compliance with relevant industrial and chemical standards.

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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Off-white to light brown powder or crystals
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 95.0%
Sulfonic Acid Content	≥ 85.0%
Water Content (KF)	≤ 5.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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