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C85778 Aldrich

o-Cresolphthalein

indicator grade

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Properties

Related Categories Analytical Reagents, Analytical/Chromatography, C, Cell Biology, Hematology and Histology,
grade   indicator grade
InChI Key   CPBJMKMKNCRKQB-UHFFFAOYSA-N
pH range   8.2 - 9.8, colorless to red
mp   219-221 °C(lit.)
absorption   λmax 381 nm (2nd)
  λmax 566 nm

Description

Packaging

10 g in glass bottle

Biochem/physiol Actions

o-Cresolphthalein is a reversible pH indicator. The kinetics of the reverse pathway (red-purple to colorless) is slow, thereby making it an appropriate molecule to check flow patterns in ducts with corrugated walls. It is also used for the colorimetric determination of calcium content via the o-cresolphthalein complexone method. Binding of calcium to o-cresolphthalein, in the presence of alkaline conditions (pH 10-12), results in the formation of a red complex with an absorbance at 570-575nm.

Price and Availability

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
3

Documents

Certificate of Analysis

Certificate of Origin

Protocols & Articles
Peer-Reviewed Papers
15

References

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