17405-03-7

Usage

InChI:InChI=1/C6H4N2O3S.ClH/c7-8-5-2-1-3-6(4-5)12(9,10)11;/h1-4H;1H

Upstream product

• 121-47-1 3-aminobenzenesulfonic acid 

Downstream Products

• 105547-96-4 3-(4,6-Diamino-2-ethylsulfanyl-pyrimidin-5-ylazo)-benzenesulfonic acid 
• 105547-57-7 3-(5-Amino-3-methyl-1-phenyl-1H-pyrazol-4-ylazo)-benzenesulfonic acid 
• 1021949-19-8 C₁₅H₁₇N₃O₇S₂ 
• 138-28-3 m-[(4-amino-3-methoxyphenyl)azo]benzenesulfonic acid 

Relevant academic research and scientific papers

WATER-SOLUBLE AZO COMPOUNDS OR SALTS THEREOF, INK COMPOSITIONS AND COLORED PRODUCTS

The present invention relates to a water-soluble azo compound or a salt thereof represented by the following formula (1): (wherein, R represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms or a sulfo group, n, m, x and y represent an integer of 1 or 2, 1 to 3, 2 to 4 and 1 to 3, respectively.) and an ink composition containing the same; the above compound or a salt thereof has a hue possessing a high vividness suitable for inkjet recording, provides various fastnesses to recorded matters, and is useful as a yellow coloring matter excellent in storage stability when prepared into an ink composition, and suitable for ink compositions, especially inks for inkjet recording.

The Influence of Chlorine and Sulphonate Substituents on the Visible Absorption Maxima of Some Azo Dyes

A total of 110 arylazo dyes have been prepared, based on five benzenoid and heterocyclic coupling components, and containing combinations of chlorine and sulphonate (sulpho) substituents in the diazo components.Their visible absorption maxima have been analysed in order to determine the degree to which chloro and sulfo substituent influences are constant and transferable, both within a series, and between series.Additivity is found to pertain, if allowances are made for steric effects.A 2-sulpho group alone can induce nonplanarity, depending on the nature of the coupling component.The 2-sulpho-3-chloro combination is particularly responsible for hypsochromic shifts unexpected on the basis of strict additivity.Computer-aided molecular modelling studies have clarified the steric interactions present.Di-ortho-substitution also induces nonplanarity and hypsochromic effects.There is some evidence for non-equivalence of a substituent in the two distinct meta-orientations, although MO calculations do not reproduce this behaviour.

USE OF CURRENTLESS POTENTIAL-TIME CURVES FOR DETERMINING THE RATE CONSTANTS OF DIAZOTATION REACTIONS

The kinetics and the rate constants for the diazotation of nine aromatic amines at various conditions (temperature, medium) were determined by the method of currentless potential-time curves.A comparison with an independent method and with literature data is presented.