Indigotrisulphonic acid potassium salt ≥60% (by HPLC) ozone-scavenging reagent, Sigma-Aldrich®

Supplier: SIGMA-ALDRICH MICROSCOPY

Synonyms: Potassium indigotrisulphonate

234087-1G 234087-5G
234087-1GEA 89 GBP
234087-1G 234087-5G
Indigotrisulphonic acid potassium salt ≥60% (by HPLC) ozone-scavenging reagent, Sigma-Aldrich®
Indigotrisulphonic acid potassium salt

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.

Formula: C₁₆H₇K₃N₂O₁₁S₃
MW: 616,71 g/mol
Storage Temperature: Ambient
MDL Number: MFCD00013160
CAS Number: 67627-18-3
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Specification Test Results

Appearance (Color) Dark Blue to Very Dark Blue and Dark Purple to Very Dark Purple and Black
Appearance (Form) Powder or Crystals or Powder with Chunk(s) or Crystals with Chunk(s)
Infrared spectrum Conforms to Structure
Wavelength 250 - 256 nm
Extinction Coefficient ≥ 23000
Extinction Coefficient ( c = 0.01g/l in H2O) ≥ 17000
Purity (HPLC) ≥ 60 %
Carbon Typically 19.5% - 26.0%
Nitrogen Typically 2.5% - 4.0%
Solubility (Color) c = 0.1%; Water Dark Blue to Very Dark Blue

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