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319236 Sigma-Aldrich

Phenolphthalein solution

0.5 wt. % in ethanol: water (1:1)

  • CAS Number 77-09-8

  • Empirical Formula (Hill Notation) C20H14O4

  • Molecular Weight 318.32

  •  Beilstein/REAXYS Number 284423

  •  MDL number MFCD00005913

  •  PubChem Substance ID 24859151

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Properties

Related Categories Analytical Reagents, Analytical/Chromatography, Cell Biology, Hematology and Histology, Indicator Solutions,
InChI Key   KJFMBFZCATUALV-UHFFFAOYSA-N
concentration   0.5 wt. % in ethanol: water (1:1)
visual transition interval   8.0 - 10, colorless to red
density   0.918 g/mL at 25 °C
absorption   λmax 552 nm

Description

General description

Phenolphthalein is an acid base indicator. It is a weak acid, which is colorless in acidic solution and turns puce pink in alkaline solution. Phenolphthalein is genotoxic. It might cause oxidative damage and binds to estrogen receptors.

Phenolphthalein solution is a synthetic indicator. It is colorless in acidic and neutral conditions. Phenolphthalein gives pink color when added to a base, therefore it is considered as a base indicator.

Application

Phenolphthalein solution has been used to measure total titratable acids by titration method.

Packaging

100 mL in glass bottle

Safety & Documentation

Safety Information

Symbol 
Signal word 
Warning
Hazard statements 
RIDADR 
UN1170 - class 3 - PG 3 - Ethanol, solution
WGK Germany 
3
Flash Point(F) 
75.2 °F
Flash Point(C) 
24 °C

Documents

Certificate of Analysis

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Milli-Q® Water Purification Solutions
Protocols & Articles
Peer-Reviewed Papers
15

References

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