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Phenol red

(phenolsulfonphthalein) Reag. Ph Eur

Synonym: Phenol red

  • CAS Number 143-74-8

  • Linear Formula (C6H4OH)2C7H4SO3

  • Molecular Weight 354.38

  •  MDL number MFCD00003552

  •  EC Index Number 205-609-7

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Properties

Related Categories Analytical Reagents, Analytical/Chromatography, Indicator Solutions, Indicators, Titration More...
Agency/Method   reag. Ph. Eur.
Quality Level   200
mp   >300 °C
bulk density   200‑300 kg/m3
InChI   1S/C19H14O5S/c20-15-9-5-13(6-10-15)19(14-7-11-16(21)12-8-14)17-3-1-2-4-18(17)25(22,23)24-19/h1-12,20-21H
InChI key   BELBBZDIHDAJOR-UHFFFAOYSA-N
storage conditions   no restrictions.

Description

Analysis Note

Assay (bromatometric, calculated on dried substance): 98.0 - 102.0 %
Identity (UV/VIS-Spectrum): passes test
Identity (Color transition): passes test
Identity (Bromination): passes test
Insoluble substances: ≤ 0.5
Sulfated ash: ≤ 0.2
Loss on Drying (105°C): ≤ 1.0

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