Description

1,2,5-Naphthalenetrisulfonic Acid is a high-purity, multi-functional aromatic sulfonic acid derivative. This compound serves as a critical intermediate and functional additive in advanced chemical synthesis, valued for its strong acidity and water-solubility imparted by the sulfonic acid groups. It is primarily utilized by manufacturers in the dye, pharmaceutical, and specialty chemical industries for applications requiring precise molecular architecture and consistent performance.

Application

• Dye and Pigment Intermediate: A key building block for synthesizing acid dyes, reactive dyes, and other colorants, contributing to chromophore development and solubility.
• Pharmaceutical Synthesis: Used as a sulfonating agent and intermediate in the production of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Catalyst and Additive: Functions as an acid catalyst in organic reactions or as a dispersing and leveling agent in various industrial formulations.
• Electroplating and Surface Treatment: Employed in electroplating baths and metal surface treatment processes to improve finish quality and uniformity.
• Research & Development: Serves as a valuable reagent in chemical research for developing new sulfonated compounds and studying reaction mechanisms.
• Polymer Modification: Can be used to introduce sulfonic acid groups into polymers, altering their properties for specific applications like ion exchange.

Basic Information

Product Name	1,2,5-Naphthalenetrisulfonic Acid
CAS No.	27258-46-4
Molecular Formula	C10H8O9S3
Molecular Weight	384.36 g/mol
Synonyms	Naphthalene-1,2,5-trisulfonic Acid; 1,2,5-NTSA; 1-Naphthol-2,5-disulfonic Acid (related); Naphthalenetrisulfonic Acid; Trisulfonated Naphthalene; Acid Naphthalene Trisulfonate
EINECS	Contact for details

Quality Control

Our 1,2,5-Naphthalenetrisulfonic Acid is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing, including assay, impurity profiling, and identity confirmation, to ensure it meets exacting specifications for industrial and research use. Certificates of Analysis (COA) documenting purity, physical properties, and test results are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling.

Specification

Item	Specification
Appearance	Off-white to light tan powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.5%

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