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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 24856430

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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

Other Notes

Same product — same quality — now Sigma-Aldrich brand

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

Suggested Laboratory Gloves


Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.



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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