Categories: Stains Indicator Reagents-69
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Product Short Description: CRESOL RED (ACS GRADE)
Product Description:

Cresol Red excellent quality manufacturer, exporter and supplier. Cresol Red is used as a tracking dye in DNA, RNA (agarose) and protein (polyacrylamide) electrophoresis.

Product Application:
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Product Note:

In agarose, Cresol Red runs with an apparent molecular size of approx. 125 bp DNA. Cresol Red does not inhibit Taq polymerase. Recently Cresol Red has been used as a pH sensitive indicator dye in nanoengineered optical urea biosensors films and hetero-core structured fiber optic pH sensor.

Product Technical Specification:
C.A.S. No. 62625-29-0
M.F. C21H17O5SNa
M.W. 404.42gm/mole

Specifications:

DYE CONTENT MIN 95%
Transition Range pH 6.5-8.8 ( Yellow-Purple )
  pH 0.5 - 1.8 ( Pink - Yellow )
Absorption maximum (pH 0.5) Lambda 1max 517 - 520nm
Absorption maximum (pH 2.5) Lambda 2max 432-437nm
Absorption maximum (pH 6.5) Lambda 3max 432-437nm
Absorption maximum (pH 8.8) Lambda 4max 571-575nm
Absorptivity (A1%/1cm at pH 0.5 at Lambda 1max) 1180-1230
Absorptivity (A1%/1cm at pH 2.5 at Lambda 2max) 490-540
Absorptivity (A1%/1cm at pH 6.5 at Lambda 3max) 490-540
Absorptivity (A1%/1cm at pH 8.5 at Lambda 4max) 1000-1050
Loss On Drying (110°C) <5%
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