6472-58-8

Basic information

• Product Name: 3-methoxysulphanilic acid
• Synonyms: 3-methoxysulphanilic acid;Benzenesulfonic acid, 4-amino-3-methoxy-
• CAS NO: 6472-58-8
• Molecular Formula: C7H9NO4S
• Molecular Weight: 203.21566
• EINECS: 229-322-1
• Mol File: 6472-58-8.mol
• Article Data: 4

Chemical Properties

• Appearance: /
• Density: 1.467g/cm³
• Refractive Index: 1.595
• CAS DataBase Reference: 3-methoxysulphanilic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 3-methoxysulphanilic acid(6472-58-8)
• EPA Substance Registry System: 3-methoxysulphanilic acid(6472-58-8)

Safety Data

• Hazardous Substances Data: 6472-58-8(Hazardous Substances Data)

Usage

General Description

3-Methoxysulphanilic acid is a chemical compound with the molecular formula C7H9NO4S. It is also known as 3-Methoxybenzenesulfonic acid and is a white to light yellow crystalline powder. This chemical is often used in the production of dyes and pigments, as well as in the synthesis of pharmaceuticals and other organic compounds. 3-Methoxysulphanilic acid is also used as a reagent in chemical reactions and as a corrosion inhibitor. It is important to handle this compound with caution, as it is harmful if swallowed, inhaled, or absorbed through the skin, and may cause irritation to the respiratory system and skin.

InChI:InChI=1/C7H9NO4S/c1-12-7-4-5(13(9,10)11)2-3-6(7)8/h2-4H,8H2,1H3,(H,9,10,11)

Upstream product

• 90-04-0 2-methoxy-phenylamine 

Relevant articles and documents

Solid state synthesis of ring-substituted aminobenzenesulphonic acids

Treatment of 2-methoxyaniline and 3,5-dichloroaniline with conc.H 2SO4 in 2:1 molar ratio at RT affords the corresponding sulphate salts. These salts have been characterized by X-ray diffraction and spectral analyses. Both these salts are found to form ring substituted aminobenzenesulphonic acids in solid state, via proton transfer, under thermal and microwave irradiations.

Sulfonation of arylamines Part 9 - Solid state synthesis of di-ortho ring substituted aminobenzenesulfonic acids

Di-ortho ring substituted arylammonium sulfates (Di-o-RSAS) have been prepared from the corresponding arylamines by treatment with conc. H2SO4 and characterized by elemental, gravimetric and spectral analyses. These sulfates yield the corresponding ring substituted aminobenzenesulfonic acids (RSABSA) when subjected to thermal energy. Non-isothermal gravimetric studies on di-o-RSAS support the formation of RSABSA. It is observed that most of the salts undergo transformation to acid in solid state via proton transfer reaction prior to sulfonation.