CHROMOTROPE 2B excellent quality manufacturer, exporter and supplier.Chromotrope 2B along with Chromotrope 2R, was used to give a highly colored radical anion, during the spectrophotometric determination of cephalosporins (cephadroxil (I), cephalexin (II) and cephradine (III)) in pharmaceutical products. It may be immobilized on AG 1-X8 ion exchange resin, used in flame atomic absorption spectrometry and inductively coupled plasma mass spectrometry (ICP-MS), done for the on-line preconcentration and determination of aluminium.

Technical Specifications:
C.A.S. No. 548-80-1
CI NO. 16575
M.F. C16H9N3Na2O10S2
M.W. 513.37gm/mole


Dye Content (by Spectrophotometry) >75%
Solubility 0.1 % (Dist. water) Clear solution
Absorption maximum (Dist. Water) ?max 512-518nm
Absorptivity (A1%1cm in Water, at ?max) >575
Loss On Drying (110°C) <8%

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