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114553 Sigma-Aldrich

Thymolphthalein

ACS reagent, Dye content 95 %

Synonym: 5′,5′′-Diisopropyl-2′,2′′-dimethylphenolphthalein

  • CAS Number 125-20-2

  • Empirical Formula (Hill Notation) C28H30O4

  • Molecular Weight 430.54

  •  Beilstein Registry Number 359413

  •  EC Number 204-729-7

  •  MDL number MFCD00005909

  •  PubChem Substance ID 24847182

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Properties

Related Categories Analytical Reagents, Analytical/Chromatography, Cell Biology, Hematology and Histology, Indicators,
grade   ACS reagent
InChI Key   LDKDGDIWEUUXSH-UHFFFAOYSA-N
composition   Dye content, 95%
clarity of soln   passes test
visual transition interval   8.8 - 10.5, colorless to blue
mp   251-253 °C(lit.)
absorption   λmax 396 nm (2nd)
  λmax 592 nm

Description

Packaging

10, 50 g in poly bottle

Application

Thymolphthalein has been used as a pH indicator in [14C] urea breath test to determine when the CO2 trap is full.

General description

Thymolphthalein (5′, 5′′-Diisopropyl-2′, 2′′-dimethylphenolphthalein) is an acid-base indicator which is colorless in solutions with a pH below 8.5 and blue in solutions with a pH above 9.5. Thymolphthalein has been used as an indicator in periodate-thiosulfate reaction.

Price and Availability


Tissue Diagnostics

All labs need water

Biomedical Applications
Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
3
Protocols & Articles
Peer-Reviewed Papers
15

References

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