Description

3-Hydroxy-7-Nitronaphthalenesulphonic Acid is a specialized naphthalene derivative that serves as a critical intermediate in advanced organic synthesis. Its value lies in the unique combination of functional groups—hydroxy, nitro, and sulphonic acid—which make it a versatile building block for creating complex molecules. This compound is primarily sought by manufacturers in the dye and pigment, pharmaceutical, and agrochemical industries for the development of high-performance products.

Application

• Key intermediate in the synthesis of azo dyes and pigments, contributing to color strength and stability.
• Building block for pharmaceutical research, particularly in developing active pharmaceutical ingredients (APIs) with specific functional properties.
• Precursor in the manufacture of agrochemicals, such as herbicides and insecticides.
• Used in organic light-emitting diode (OLED) material research as a functional component.
• Intermediate for specialty chemicals and fine chemicals requiring a naphthalene sulfonate backbone.
• Potential use in corrosion inhibitor formulations for industrial applications.

Basic Information

Product Name	3-Hydroxy-7-Nitronaphthalenesulphonic Acid
CAS No.	68516-57-4
Molecular Formula	C₁₀H₇NO₆S
Molecular Weight	269.23 g/mol
Synonyms	7-Nitro-3-naphtholsulfonic Acid; 3-Hydroxy-7-nitronaphthalene-1-sulfonic Acid; 1-Naphthalenesulfonic acid, 3-hydroxy-7-nitro-; 7-Nitro-3-hydroxy-1-naphthalenesulfonic acid; NSC 403780; 3-Hydroxy-7-nitro-1-naphthalenesulfonic acid; 3-Hydroxy-7-nitronaphthalene-1-sulphonic Acid
EINECS	Contact for details

Quality Control

Our production of 3-Hydroxy-7-Nitronaphthalenesulphonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Each lot is analyzed against comprehensive specifications using advanced techniques like HPLC and NMR. A Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong bases and oxidizing agents. As a sulfonic acid derivative, it is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Yellow to brown powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 5.0%

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