Products / pH Indicators

CRESOL RED SODIUM SALT (ACS GRADE) Print Download

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

Specifications:

Transition Range pH 6.5-8.8
Yellow-Purple
Absorption maximum (pH 6.5) ?1max 432-437nm
Absorption maximum (pH 8.8) ?2max 571-575nm
Absorptivity (A1%/1cm at pH 6.5 at ?1max) 460-520
Absorptivity (A1%/1cm at pH 8.8 at ?2max) 950-1050
Loss On Drying (110°C) <5%
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