Description

Disodium 4-Hydroxy-5-[(Phenylsulphonyl)Amino]Naphthalene-2,7-Disulphonate is a high-purity, water-soluble naphthalene derivative distinguished by its sulfonate and sulfonamide functional groups. This compound is valued for its role as a key intermediate in the synthesis of specialized dyes and pigments, offering excellent chromophoric properties and solubility. It is primarily utilized by manufacturers in the fine chemical, specialty dye, and advanced material sectors seeking consistent quality and reliable supply for their production processes.

Application

• Dye and Pigment Intermediate: A crucial building block for synthesizing acid dyes, reactive dyes, and other high-value colorants.
• Fine Chemical Synthesis: Used as a specialized intermediate in the production of complex organic molecules for research and industrial applications.
• Textile Chemicals: Employed in the manufacturing of dyes and auxiliaries for the textile industry.
• Analytical Reagent: Can serve as a standard or reagent in analytical chemistry and quality control laboratories.
• Photographic Chemicals: Potential use in the formulation of certain photographic and imaging chemicals.
• Material Science Research: Investigated for use in the development of functional materials due to its unique molecular structure.

Basic Information

Product Name	Disodium 4-Hydroxy-5-[(Phenylsulphonyl)Amino]Naphthalene-2,7-Disulphonate
CAS No.	83763-42-2
Molecular Formula	C₁₆H₁₁NNa₂O₉S₃
Molecular Weight	519.39 g/mol
Synonyms	4-Hydroxy-5-[(phenylsulfonyl)amino]-2,7-naphthalenedisulfonic acid disodium salt; Disodium 5-[(benzenesulfonyl)amino]-4-hydroxy-2,7-naphthalenedisulfonate; 5-[(Phenylsulfonyl)amino]-4-hydroxy-2,7-naphthalenedisulfonic acid disodium salt; Acid Yellow 219 (C.I. 13951); C.I. Acid Yellow 219; Naphthalene-2,7-disulfonic acid, 4-hydroxy-5-[(phenylsulfonyl)amino]-, disodium salt; Benzenesulfonamide, N-(4-hydroxy-2,7-disulfo-1-naphthalenyl)-, disodium salt
EINECS	Contact for details

Quality Control

Our Disodium 4-Hydroxy-5-[(Phenylsulphonyl)Amino]Naphthalene-2,7-Disulphonate is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A Certificate of Analysis (COA) detailing key specifications such as assay, impurity profile, and physical characteristics is provided with each shipment to guarantee it meets your technical requirements.

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.

Specification

Item	Specification
Appearance	Yellow to brownish-yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Contact for details
Solubility (in Water)	Freely soluble

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