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234087

Potassium indigotrisulfonate

Name: Potassium indigotrisulfonate
Brand: SIAL

ozone-scavenging reagent

Synonym(s):

5,5′,7-Indigotrisulfonic acid tripotassium salt, Indigo-5,5′,7-trisulfonic acid tripotassium salt, Potassium indigotrisulfonate, Tripotassium indigo-5,5′,7-trisulfonate, tri-Potassium indigo-5,5′,7-trisulfonate

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About This Item

Empirical Formula (Hill Notation):

C₁₆H₇K₃N₂O₁₁S₃

CAS Number:

67627-18-3

Molecular Weight:

616.72

UNSPSC Code:

12171500

NACRES:

NA.47

PubChem Substance ID:

24854018

MDL number:

MFCD00013160

Beilstein/REAXYS Number:

4932187

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Properties

Quality Segment

100

form

crystals or chunks

concentration

>60% (HPLC)

technique(s)

titration: suitable

solubility

water: 0.1%

λ_max

600 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[K+].[K+].[K+].[O-]S(=O)(=O)c1ccc2NC(\C(=O)c2c1)=C3\Nc4c(cc(cc4S([O-])(=O)=O)S([O-])(=O)=O)C3=O

InChI

1S/C16H10N2O11S3.3K/c19-15-8-3-6(30(21,22)23)1-2-10(8)17-13(15)14-16(20)9-4-7(31(24,25)26)5-11(12(9)18-14)32(27,28)29;;;/h1-5,17-18H,(H,21,22,23)(H,24,25,26)(H,27,28,29);;;/q;3*+1/p-3/b14-13+;;;

InChI key

XOSMXDUITYWYGR-VPOCKCTCSA-K

Description

Application

Ozone-scavenging reagent that reacts rapidly with ozone.
Potassium indigotrisulfonate has been used:

in colorimetric method of measurement of atmospheric ozone
for measuring residual aqueous ozone by gas diffusion flow injection analysis.
to determine O₃ concentration in water.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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