Description

3,5-Dihydroxy-7-Sulfo-2-Naphthoic Acid is a multifunctional naphthalene derivative that serves as a key intermediate in the synthesis of dyes, pigments, and specialty chemicals. Its unique structure, featuring both sulfonic and carboxylic acid groups alongside hydroxyl functionalities, provides excellent water solubility and chelating properties. This compound is essential for manufacturers in the dye and pigment industry, as well as for researchers developing advanced materials and pharmaceutical intermediates.

Application

• Dye and Pigment Intermediate: A crucial building block for the synthesis of azo dyes, acid dyes, and reactive dyes, imparting color fastness and solubility.
• Complexing Agent: Used in analytical chemistry and water treatment processes due to its ability to chelate metal ions.
• Pharmaceutical Intermediate: Serves as a precursor in the synthesis of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Research & Development: Employed in academic and industrial R&D for creating novel functional materials and organic compounds.
• Chemical Synthesis: Utilized as a versatile intermediate for further chemical modifications, leveraging its reactive hydroxyl and sulfonic acid groups.

Basic Information

Product Name	3,5-Dihydroxy-7-Sulfo-2-Naphthoic Acid
CAS No.	6407-90-5
Molecular Formula	C11H8O7S
Molecular Weight	284.24 g/mol
Synonyms	7-Sulfo-3,5-dihydroxy-2-naphthoic acid; 2-Naphthalenecarboxylic acid, 3,5-dihydroxy-7-sulfo-; 3,5-Dihydroxy-7-sulfonaphthalene-2-carboxylic acid; 7-Sulfonaphthalene-2-carboxylic acid, 3,5-dihydroxy-; 6407-90-5; NSC 403764; 3,5-Dihydroxy-7-sulfo-2-naphthalenecarboxylic acid
EINECS	Contact for details

Quality Control

Our 3,5-Dihydroxy-7-Sulfo-2-Naphthoic Acid is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity and performance. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles 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, 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, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Yellow to brown powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals	≤ 20 ppm

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