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27130 Sigma-Aldrich

Chromotrope 2B

for microscopy

Synonym: 2-(4-Nitrophenylazo)chromotropic acid disodium salt, Acid Red 176

  • CAS Number 548-80-1

  • Empirical Formula (Hill Notation) C16H9N3Na2O10S2

  • Molecular Weight 513.37

  •  Beilstein Registry Number 4109733

  •  Colour Index Number 16575

  •  EC Number 208-959-9

  •  MDL number MFCD00003951

  •  PubChem Substance ID 329752979

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Properties

Related Categories Analytical Reagents, Analytical/Chromatography, Microscopy Reagents, Stains and Dyes
grade   for microscopy
InChI Key   AXUUHWJXDWBCSG-QIKYXUGXSA-L

Description

Application

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.

Price and Availability


Laboratory Gloves
Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
3

Documents

Certificate of Analysis

Protocols & Articles
Peer-Reviewed Papers
15

References

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