Description

Sodium 4-Hydroxy-7-(Phenylamino)Naphthalene-2-Sulphonate is a specialized organic salt with a naphthalene sulfonate core structure, valued for its functional properties as an intermediate and additive. This compound is significant for its role in synthesizing dyes, pigments, and advanced materials, where its specific molecular architecture contributes to color development and chemical stability. It is primarily needed by manufacturers in the dyestuff, specialty chemical, and research sectors seeking high-purity intermediates for product development and process optimization.

Application

• Dye and Pigment Intermediate: A key building block in the synthesis of acid dyes, reactive dyes, and organic pigments.
• Specialty Chemical Synthesis: Used as a functional intermediate in the production of complex organic molecules for various industrial applications.
• Research & Development: Serves as a valuable reagent in chemical research for studying sulfonated naphthalene derivatives and their properties.
• Analytical Chemistry: Potential use as a standard or reagent in specific analytical methods due to its defined structure.
• Functional Additive: May be employed in formulations where sulfonate groups are required for solubility or ionic characteristics.

Basic Information

Item	Details
Product Name	Sodium 4-Hydroxy-7-(Phenylamino)Naphthalene-2-Sulphonate
CAS No.	68213-89-8
Molecular Formula	C₁₆H₁₂NNaO₄S
Molecular Weight	337.33 g/mol
Synonyms	7-Anilino-4-hydroxy-2-naphthalenesulfonic acid sodium salt; Sodium 7-anilino-4-hydroxy-2-naphthalenesulfonate; 4-Hydroxy-7-(phenylamino)-2-naphthalenesulfonic acid sodium salt; Acid Yellow 199 (related dye class); C.I. 56205; Azoic Coupling Component 12 (historical); Naphthalenesulfonic acid, 7-(phenylamino)-4-hydroxy-, monosodium salt
EINECS	Contact for details

Quality Control

Our Sodium 4-Hydroxy-7-(Phenylamino)Naphthalene-2-Sulphonate is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance and regulatory needs.

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 minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to brownish-yellow powder or crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Residue on Ignition (Sulfated Ash)	Contact for details
Heavy Metals (as Pb)	< 20 ppm

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