92-40-0

Basic information

• Product Name: 7-hydroxynaphthalene-2-sulphonic acid
• Synonyms: 7-hydroxynaphthalene-2-sulphonic acid;2-Naphthol-7-sulfonic acid;2-Hydroxynaphthalene-7-sulfonicacid;2-Hydroxy-7-naphthalenesulfonic acid;7-Hydroxynaphthalene-2-sulfonic acid;2-Naphthalenesulfonic acid, 7-hydroxy-
• CAS NO: 92-40-0
• Molecular Formula: C₁₀H₈O₄S
• Molecular Weight: 224.23312
• EINECS: 202-153-0
• Mol File: 92-40-0.mol

Chemical Properties

• Appearance: /
• Density: 1.549g/cm³
• Refractive Index: 1.703
• CAS DataBase Reference: 7-hydroxynaphthalene-2-sulphonic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 7-hydroxynaphthalene-2-sulphonic acid(92-40-0)
• EPA Substance Registry System: 7-hydroxynaphthalene-2-sulphonic acid(92-40-0)

Safety Data

• RIDADR: 1759
• HazardClass: 8
• PackingGroup: III
• Hazardous Substances Data: 92-40-0(Hazardous Substances Data)

Usage

Uses

Used in Dye Production:
7-Hydroxynaphthalene-2-sulphonic acid is used as a dye intermediate for the production of various types of dyes, particularly acid dyes. These dyes are widely utilized in the textile industry due to their colorfast properties and ability to bind with fibers.
Used in Pharmaceutical Synthesis:
In the pharmaceutical industry, 7-hydroxynaphthalene-2-sulphonic acid serves as a key intermediate in the synthesis of various organic compounds and pharmaceuticals. Its unique chemical structure allows for the development of new drugs with potential therapeutic applications.
Used in Organic Chemistry Research:
As a versatile building block in organic chemistry, 7-hydroxynaphthalene-2-sulphonic acid is used in research and development for creating new organic compounds with diverse applications across various industries.
Used in Aqueous Solutions:
Due to its water solubility, 7-hydroxynaphthalene-2-sulphonic acid is often used in aqueous solutions for a range of applications, including as a reactant or catalyst in chemical reactions, or as a component in formulations for various products.

InChI:InChI=1/C10H8O4S/c11-9-3-1-7-2-4-10(15(12,13)14)6-8(7)5-9/h1-6,11H,(H,12,13,14)

Upstream product

• 92-41-1 2,7-naphthalenedisulfonic acid 
• 135-19-3 β-naphthol 
• 91-20-3 naphthalene 
• 7664-93-9 sulfuric acid 
• 7647-01-0 hydrogenchloride 
• 861049-08-3 2-naphthol-1,7-sulfonic acid 
• 494-44-0 7-aminonaphthalene-2-sulfonic acid 

Downstream Products

• 6361-38-2 2-naphtol-3,7-disulfonic acid 
• 135-19-3 β-naphthol 
• 494-44-0 7-aminonaphthalene-2-sulfonic acid 
• 582-17-2 2,7-Dihydroxynaphthalene 

Relevant articles and documents

Process for aryl-quinone and aryl-naphthoquinone diazide sulfonic acids

A process for the preparation of aryl-diazide-sulfonic acids by a series of sequential in-situ process steps. The process comprises the nitrosation of a hydroxyarylsulfonic acid; conversion of the nitroso-derivative to a sulfamate which is then diazotized to the diazide. Temperature and pH are maintained in predetermined ranges to maintain the reaction products in solution without the formation side-products or the need to isolate intermediates. The process of the invention is particularly useful in the preparation of light-sensitive materials such as naphthoquinonediazide sulfonic acids which are used in the preparation of photoresist compositions. The invention provides a high purity product at a high material efficiency, high equipment utilization, low effluent discharge, and reduced cost.

Barium laked phenylazonaphthalene dye containing sulfonic acid groups

Azo dyes containing sulfonic acid groups laked with barium and derived from an anilinesulfonic acid as diazo component and a β-naphtholsulfonic acid as coupling component for example a dye of the formula STR1 The dyes are eminently suitable as pigments for coloring surface coating compositions, printing inks and particlarly resins.

Aromatic azo sulfonylnitrene compounds

Compounds of the structure SPC1 Wherein R and R1 are the same or different and are selected from the group consisting of hydrogen, halogen, and alkyl from one to four carbon atoms, inclusive, and R2 is a substance which inhibits thrombogenic or clotting activity of a material and is that portion of a substituted aromatic which couples with a diazonium salt.