Girish Mahajan

Eriochrome Black T

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Abbreviations  EBT
Molar mass  461.381 g/mol
Formula  C20H12N3O7SNa
Appearance  dark red/brown powder
Eriochrome Black T Eriochrome black T CI 14645 CAS 1787617 103170

Titration of edta and water sample with eriochrome black t wmv


Eriochrome Black T is a complexometric indicator that is used in complexometric titrations, e.g. in the water hardness determination process. It is an azo dye. Eriochrome is a trademark of Huntsman Petrochemical, LLC.

Contents

Eriochrome Black T Acros Organics AC228361000 Eriochrome Black T indicator grade 100g

In its protonated form, Eriochrome Black T is blue. It turns red when it forms a complex with calcium, magnesium, or other metal ions.

Eriochrome Black T httpsuploadwikimediaorgwikipediacommonsthu

Titration of edta and water sample with eriochrome black t


Applications

Eriochrome Black T Eriochrome Black T Wikipedia

When used as an indicator in an EDTA titration, the characteristic blue end-point is reached when sufficient EDTA is added and the metal ions bound to the indicator are chelated by EDTA, leaving the free indicator molecule.

Eriochrome Black T has also been used to detect the presence of rare earth metals.

Eriochrome Black T Eriochrome Black T C20H12N3NaO7S ChemSpider
Eriochrome Black T ERIOCHROME BLACK T CAS 1787617 02151066 MP Biomedicals
Eriochrome Black T Eriochrome Black T Spectrum

References

Eriochrome Black T Wikipedia


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