Products / pH Indicators

BROMOPHENOL BLUE SODIUM SALT (ACS GRADE) Print Download

C.A.S. No. 34725-61-6
M.F. C19H9Br4SO5Na
M.W. 691.97gm/mole

Specifications:

Dye Content (by Spectrophotometry) >90%
Transition Range pH 3.0-4.6
Greenish Yellow-Blue
Solubility 0.1% (Dist. Water) Clear solution
Absorption maximum (pH 3.0) ?1max 434-439nm
Absorption maximum (pH 4.6) ?2max 590-593nm
Absorptivity (A1%/1cm at pH 3.0 at ?1max) 320-370
Absorptivity (A1%/1cm at pH 4.6 at ?2max) 880-980
Loss On Drying (110°C) <5%
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