Description

8-Hydroxy-5,7-Dinitronaphthalene-1-Sulfonic Acid Sodium Salt is a specialized naphthalene derivative with a high-purity sulfonic acid sodium salt structure. This compound serves as a critical intermediate and functional dye precursor in advanced chemical synthesis, valued for its specific reactive sites. It is primarily required by manufacturers in the dye and pigment, pharmaceutical, and agrochemical industries for producing high-performance colorants and active ingredients.

Application

• Dye and Pigment Manufacturing: A key intermediate for synthesizing acid dyes, reactive dyes, and specialized pigments.
• Pharmaceutical Intermediates: Used in the research and development of active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Serves as a building block for certain herbicides and plant growth regulators.
• Chemical Research & Development: Employed in organic synthesis and material science research due to its nitro and sulfonate functional groups.
• Analytical Reagents: Can be used in the preparation of specific analytical standards and reagents.
• Functional Material Precursor: Potential use in the synthesis of polymers or materials with specific optical properties.

Basic Information

Product Name	8-Hydroxy-5,7-Dinitronaphthalene-1-Sulfonic Acid Sodium Salt
CAS No.	6441-64-1
Molecular Formula	C₁₀H₅N₂NaO₈S
Molecular Weight	344.21 g/mol
Synonyms	1-Naphthalenesulfonic acid, 8-hydroxy-5,7-dinitro-, sodium salt; 5,7-Dinitro-8-hydroxy-1-naphthalenesulfonic acid sodium salt; Sodium 8-hydroxy-5,7-dinitronaphthalene-1-sulfonate; 8-Hydroxy-5,7-dinitro-1-naphthalenesulfonic acid sodium salt; 5,7-Dinitro-8-hydroxynaphthalene-1-sulfonic acid sodium salt; Dinitro H acid sodium salt (related derivative); Acid Yellow 1 intermediate (related)
EINECS	229-229-8

Quality Control

Our 8-Hydroxy-5,7-Dinitronaphthalene-1-Sulfonic Acid Sodium Salt is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure high purity and consistent performance. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment to support your quality assurance protocols.

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); ensure the container is kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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