Description

4-Hydroxy-5-[[(p-Tolyl)Sulphonyl]Amino]Naphthalene-2,7-Disulphonic Acid, Sodium Salt is a high-purity, water-soluble organic intermediate characterized by its naphthalene disulfonic acid core and functionalized aromatic substituents. This compound is valued for its role as a key building block in the synthesis of specialized dyes, pigments, and optical brighteners, where its specific structure imparts critical color and performance properties. It is primarily sought after by manufacturers in the fine chemicals, specialty dyes, and advanced material sectors for research and production applications.

Application

• Key Intermediate for Dyes & Pigments: Serves as a crucial precursor in the synthesis of acid dyes, direct dyes, and reactive dyes for textiles, leather, and paper.
• Optical Brightener Synthesis: Used in the manufacturing of fluorescent whitening agents (FWAs) for detergents, plastics, and paper products.
• Specialty Chemical Production: Acts as a building block for creating complex organic molecules with specific functional groups for research and development.
• Laboratory Reagent: Employed as a high-purity standard or reagent in analytical chemistry and photochemical research.
• Functional Material Development: Investigated for use in the creation of advanced materials, including light-harvesting complexes and sensor components.

Basic Information

Product Name	4-Hydroxy-5-[[(p-Tolyl)Sulphonyl]Amino]Naphthalene-2,7-Disulphonic Acid, Sodium Salt
CAS No.	94232-32-3
Molecular Formula	C₁₇H₁₄NNa₂O₉S₃
Molecular Weight	545.43 g/mol
Synonyms	5-[(4-Methylphenyl)sulfonyl]amino]-4-hydroxynaphthalene-2,7-disulfonic acid disodium salt; 4-Hydroxy-5-[(p-tolylsulfonyl)amino]naphthalene-2,7-disulfonic acid disodium salt; 4-Hydroxy-5-[(4-methylphenyl)sulfonamido]naphthalene-2,7-disulfonic acid sodium salt; 4-Hydroxy-5-(p-toluenesulfonamido)naphthalene-2,7-disulfonic acid disodium salt; 4-Hydroxy-5-[(4-methylbenzenesulfonyl)amino]naphthalene-2,7-disulfonic acid sodium salt; 4-Hydroxy-5-(tosylamino)naphthalene-2,7-disulfonic acid sodium salt; 94232-32-3; Disodium 4-hydroxy-5-[(4-methylphenyl)sulfonylamino]naphthalene-2,7-disulfonate
EINECS	Contact for details

Quality Control

Our production of 4-Hydroxy-5-[[(p-Tolyl)Sulphonyl]Amino]Naphthalene-2,7-Disulphonic Acid, Sodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistent quality and specification compliance. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting all critical parameters.

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 nature, the container must be kept tightly sealed to prevent moisture absorption. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Light yellow to beige powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
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.