Description

Ethyl-4,5-Dihydroxynaphthalene-2,7-Disulphonic Acid is a specialized naphthalene derivative disulphonic acid, valued for its role as a key intermediate in the synthesis of complex organic molecules. Its bifunctional structure, featuring both hydroxyl and sulphonic acid groups, makes it a versatile building block for creating dyes, pigments, and advanced materials. This compound is essential for manufacturers and R&D laboratories in the fine chemical, dye, and pharmaceutical intermediate sectors seeking high-purity synthetic precursors.

Application

• Dye and Pigment Intermediate: A crucial precursor in the synthesis of azo dyes, acid dyes, and other complex colorants.
• Pharmaceutical Synthesis: Serves as a building block for active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Chemical Research & Development: Used in academic and industrial R&D for exploring new organic compounds and materials.
• Fine Chemical Manufacturing: Employed in the production of specialty chemicals requiring a disulphonic acid functional group.
• Ligand and Chelating Agent Precursor: Its structure can be modified to create ligands for metal complexation.
• Analytical Reagent: Potential use in the development of analytical standards and reagents.

Basic Information

Product Name	Ethyl-4,5-Dihydroxynaphthalene-2,7-Disulphonic Acid
CAS No.	71648-30-1
Molecular Formula	C₁₂H₁₂O₈S₂
Molecular Weight	348.35 g/mol
Synonyms	4,5-Dihydroxy-2,7-naphthalenedisulfonic acid, ethyl ester; 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-, ethyl ester; Ethyl 4,5-dihydroxynaphthalene-2,7-disulfonate; 4,5-Dihydroxynaphthalene-2,7-disulfonic Acid Ethyl Ester
EINECS	Contact for details

Quality Control

Our Ethyl-4,5-Dihydroxynaphthalene-2,7-Disulphonic Acid is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets exacting standards for use in sensitive applications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance.

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 sealed to prevent absorption of atmospheric moisture. Keep away from strong acids and organic solvents.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 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.