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Fast Sulphon Black F

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Fast Sulphon Black F
Names
IUPAC name 1-hydroxy-8-(2-hydroxy-1-naphthylazo)-2-(4-sulfo-1-naphthylazo)-naphthalene-3,6-disulfonic acid
Other names Fast Sulphon Black
Identifiers
CAS Number
3D model (JSmol)
ECHA InfoCard 100.020.879 Edit this at Wikidata
EC Number
  • 222-966-4
PubChem CID
InChI
  • InChI=1S/C30H20N4O11S3/c35-24-11-9-16-5-1-2-6-19(16)28(24)33-32-23-15-18(46(37,38)39)13-17-14-26(48(43,44)45)29(30(36)27(17)23)34-31-22-10-12-25(47(40,41)42)21-8-4-3-7-20(21)22/h1-15,35-36H,(H,37,38,39)(H,40,41,42)(H,43,44,45)Key: WQWKYALNLSYERE-UHFFFAOYSA-N
SMILES
  • c1ccc2c(c1)ccc(c2/N=N/c3cc(cc4c3c(c(c(c4)S(=O)(=O)O)/N=N/c5ccc(c6c5cccc6)S(=O)(=O)O)O)S(=O)(=O)O)O
Properties
Chemical formula C30H20N4O11S3
Molar mass 708.695
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). checkY verify (what is  ?) Infobox references
Chemical compound

Fast Sulphon Black F is a complexometric indicator used with EDTA, almost exclusively used in copper complexation determination.

Application

Fast Sulphon Black is purple when complexed with copper, and turns green when titrated against EDTA, as the EDTA displaces it, being the better complexing agent due to the chelate effect.

References

  1. Trimukhe, K.D.; Varma, A.J. (2008). "Complexation of heavy metals by crosslinked chitin and its deacetylated derivatives". Carbohydrate Polymers. 71 (1): 66–73. doi:10.1016/j.carbpol.2007.05.016.
  • Handbook of copper compounds and applications by H. Wayne Richardson (1997) (ISBN 0-82-478998-9)


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