45550 Fluka


indicator (for complexometry (Al, Fe, Zr))

Synonym: 1-(2-Hydroxy-1-naphthylazo)-2-naphthol-4-sulfonic acid sodium salt, Eriochrome® Blue Black R, Mordant Black 17, Palatine Chrome Black 6BN

  • CAS Number 2538-85-4

  • Empirical Formula (Hill Notation) C20H13N2NaO5S

  • Molecular Weight 416.38

  •  Beilstein Registry Number 6041435

  •  Colour Index Number 15705

  •  EC Number 219-810-2

  •  MDL number MFCD00004069

  •  PubChem Substance ID 24869074

  • Popular Documents:  FTIR (PDF)  



Related Categories Analytical Reagents, Analytical/Chromatography, Indicators, Metal Titration Indicators, Titration More...
grade   indicator (for complexometry (Al, Fe, Zr))


General description

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Legal Information

Calcon is a trademark of Benckiser

Eriochrome is a registered trademark of Huntsman Petrochemical, LLC

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Safety & Documentation

Safety Information

GHS07  GHS07
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WGK Germany 
Protocols & Articles
Peer-Reviewed Papers


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[Recent advances on reaction mechanism of anthocyanin biosynthesis]. Nakajima J, Yamazaki M, and Saito K Tanpakushitsu Kakusan Koso. 47(3), 217-24, (2002)


Removal of Eriochrome Blue Black R from wastewater using micellar-enhanced ultrafiltration. Zaghbani N, Hafiane A, and Dhahbi M J. Hazard. Mater. 168(2-3), 1417-21, (2009)


The effect of pH in the adsorption of Alizarin and Eriochrome Blue Black R onto iron oxides. Pirillo S, Ferreira ML, and Rueda EH J. Hazard. Mater. 168(1), 168-78, (2009)


Fluorimetric assay of aluminum in tablets by pontachrome blue black reagent. Raggi MA, Varani G, Nobile L, et al. Pharmazie 42(2), 134-5, (1987)


SAXS and ATR-FTIR studies on EBT-TSX mixtures in their sol-gel phases. Hirun N, Rugmai S, Sangfai T, et al. Int. J. Biol. Macromol. 51(4), 423-30, (2012)


[Spectra studies on interaction of bovine serum albumin with acidic chrome blue K in acidic solution]. Yu Y, Liao J, and Huang FD Guang Pu Xue Yu Guang Pu Fen Xi 22(6), 1067-9, (2002)


Resonance light scattering study on the interaction of benproperine phosphate with eriochrome blue black R in the presence of sodium dodecylbenzene sulphonate and its analytical application. Feng S, Liu J, Han X, et al. Luminescence 24(2), 67-72, (2009)


[A catalytic kinetic spectrophotometric method for determination of trace zinc(II) in Mongolian medicine and hair sample]. Sha R, Bao D, Wu D, et al. Guang Pu Xue Yu Guang Pu Fen Xi 24(12), 1646-8, (2004)


[Colorimetric and fluorometric determinations of cartap, an insecticide, by ion association with calcon]. Sano T and Syoyama M Yakugaku Zasshi 103(6), 650-4, (1983)


Beil. 16,IV,428

FT-IR 1 (2), 987:A / FT-IR 2 (3), 4094:A / IR-Spectra (3), 1462:F / RegBook 1 (2), 2751:B / Sax 6, 624 / Sigma FT-IR 1 (2), 151:D / Stains and Dyes Ref, 545 / Structure Index 1, 435:B:7

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