7313-70-4

Basic information

• Product Name: 2,3-dioxoindoline-5-sulphonic acid
• Synonyms: 2,3-dioxoindoline-5-sulphonic acid;2,3-dioxo-5-indolinesulfonic acid;2,3-Dihydro-2,3-dioxo-1H-indole-5-sulfonic acid;2,3-Dioxo-2,3-dihydro-1H-indole-5-sulfonic acid;Isatin sulfonic acid;Einecs 230-773-1;5-Sulfoisatin;2,3-Dioxoindoline-5-sulfonic acid
• CAS NO: 7313-70-4
• Molecular Formula: C₈H₅NO₅S
• Molecular Weight: 227.194
• EINECS: 230-773-1
• Mol File: 7313-70-4.mol
• Article Data: 10

Chemical Properties

• Melting Point: 143℃
• Appearance: /
• Density: 1.743
• Refractive Index: 1.661
• Storage Temp.: 2-8°C
• CAS DataBase Reference: 2,3-dioxoindoline-5-sulphonic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3-dioxoindoline-5-sulphonic acid(7313-70-4)
• EPA Substance Registry System: 2,3-dioxoindoline-5-sulphonic acid(7313-70-4)

Safety Data

• Hazardous Substances Data: 7313-70-4(Hazardous Substances Data)

Usage

General Description

2,3-dioxoindoline-5-sulphonic acid, also known as ISOHEDTA, is a chemical compound with the molecular formula C8H5NO6S. It is a water-soluble solid that is widely used in the production of detergents and cleaning products as a chelating agent. ISOHEDTA is also used in the pharmaceutical industry as a chelating agent for heavy metal ions and as a building block for the synthesis of various pharmaceutical compounds. Additionally, it is used in the manufacturing of photographic chemicals and as a complexing agent in metallurgical processes. Due to its chelating properties, ISOHEDTA plays a crucial role in various industrial applications, particularly in the removal of metal ions and the prevention of scale formation in industrial processes.

InChI:InChI=1/C8H5NO5S/c10-7-5-3-4(15(12,13)14)1-2-6(5)9-8(7)11/h1-3H,(H,9,10,11)(H,12,13,14)

Upstream product

• 91-56-5 indole-2,3-dione 
• 483-20-5 indigo-5,5'-disulfonic acid 
• 860-22-0 indigo carmine 
• 860-22-0 C_.I_. Acid Blue 74 
• 302-17-0 chloral hydrate 
• 121-57-3 4-aminobenzene sulfonic acid 

Downstream Products

• 123-08-0 4-hydroxy-benzaldehyde 
• 222035-11-2 2-Oxo-3-[(4-sulfamoyl-phenyl)-hydrazono]-2,3-dihydro-1H-indole-5-sulfonic acid sodium salt 
• 132898-96-5 5-chlorosulfonylisatin 
• 118-75-2 chloranil 
• 3577-63-7 2-amino-5-sulfo-benzoic acid 
• 21303-44-6 (Z)-3-(2-(2-nitrophenyl)hydrazono)-2-oxoindoline-5-sulfonic acid 

Relevant articles and documents

Catalytic reactivity of new Ni(II), Cu(II) and Sn(II) complexes for decolorization of indigo carmine in aqueous solution, high efficiency of copper complex

A new Ni(II), Cu(II) and Sn(II) Schiff base complexes were synthesized in this work. The characterization of the new complexes is carried out by elemental analysis, FT-IR, UV–Visible, 1H NMR and 13C NMR spectroscopy, conductance analysis, magnetic measurements and thermal gravimetric analysis. It was found that the ligand behaves as a dibasic bidentate which coordinated to the metal center through two deprotonated hydroxyl groups to form tetrahedral complex with Ni(II) and octahedral complex with Cu(II). The ligand acts as neutral bidentate through azomethine nitrogen and thiazol sulfur to form octahedral complex with Sn(II). The synthesized complexes are evaluated as catalysts for oxidative degradation of indigo carmine dye using H2O2 as oxidant and the efficiency of the catalysts is determined. The copper complex shows the best catalytic action with efficiency 92.17% after 25?min.

CTAB-assisted ultrasonic synthesis, characterization and photocatalytic properties of WO3

WO32D nanostructures have been prepared by ultrasound synthesis method assisted with CTAB using different molar ratios. The formation of monoclinic crystal structure of WO3was confirmed by X-ray powder diffraction (XRD). The characterization of the WO3samples was complemented by analysis of scanning electron microscopy (SEM), which revealed morphology mainly of rectangular nanoplates with a thickness of around 50 nm and length of 100-500 nm. Infrared spectroscopy (FT-IR) was used to confirm the elimination of the CTAB in the synthesized samples. The specific surface area was determinate by the BET method and by means of diffuse reflectance spectroscopy (DRS) it was determinate the band-gap energy (Eg) of the WO3samples. The photocatalytic activity of the WO3oxide was evaluated in the degradation reactions of rhodamine B (rhB) and indigo carmine (IC) under Xenon lamp irradiation. The highest photocatalytic activity was observed in the samples containing low concentration of CTAB with morphology of rectangular nanoplates and with higher surface area value than commercial WO3. Photodegradation of rhB and IC were followed by means of UV-vis absorption spectra. The mineralization degree of organic dyes by WO3photocatalyst was determined by total organic carbon analysis (TOC) reaching percentages of mineralization of 92% for rhB and 50% for IC after 96 h of lamp irradiation.

Highly sensitive and selective bioluminescence based ozone probes and their applications to detect ambient ozone

Highly selective and sensitive bioluminescence based probes, which respond to ozone but not to other ROS, have been developed. These probes were used to determine ozone concentrations in environmental samples.