Description

2-Carboxy-6-Hydroxynaphthalene-5-Sulfonic Acid is a multifunctional naphthalene derivative that serves as a key intermediate in the synthesis of complex organic molecules. Its value lies in the strategic positioning of its carboxyl, hydroxyl, and sulfonic acid groups, which enable versatile chemical modifications and impart desirable properties like water solubility and metal chelation. This compound is essential for manufacturers in the dyestuff, pharmaceutical, and specialty chemical industries seeking to develop high-performance pigments, active pharmaceutical ingredients (APIs), or functional additives.

Application

• Dyestuff and Pigment Intermediate: A crucial building block for synthesizing azo dyes, acid dyes, and high-grade organic pigments, particularly for textiles, inks, and coatings.
• Pharmaceutical Synthesis: Used as a versatile intermediate in the production of non-steroidal anti-inflammatory drugs (NSAIDs) and other active pharmaceutical ingredients (APIs).
• Chemical Research & Development: Serves as a starting material or reagent in organic synthesis for creating novel compounds with specific functional properties.
• Functional Additive Precursor: Can be modified to produce surfactants, dispersants, or chelating agents for industrial formulations.
• Analytical Reagent: Potential use in the preparation of reagents for analytical chemistry and biochemical assays.

Basic Information

Product Name	2-Carboxy-6-Hydroxynaphthalene-5-Sulfonic Acid
CAS No.	137644-29-2
Molecular Formula	C11H8O6S
Molecular Weight	268.24 g/mol
Synonyms	6-Hydroxy-2-naphthoic acid-5-sulfonic acid; 5-Sulfo-6-hydroxy-2-naphthoic acid; 2-Naphthoic acid, 6-hydroxy-5-sulfo-; 6-Hydroxy-5-sulfo-2-naphthalenecarboxylic acid; 6-Hydroxy-5-sulfonaphthalene-2-carboxylic acid; 2-Carboxy-6-hydroxynaphthalene-5-sulfonate; 6-Hydroxy-2-naphthalenecarboxylic acid-5-sulfonic acid
EINECS	Contact for details

Quality Control

Our 2-Carboxy-6-Hydroxynaphthalene-5-Sulfonic Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for industrial and research applications. Certificates of Analysis (COA) documenting all critical parameters 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). Keep away from strong oxidizing agents, strong bases, and incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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