Application
Eriochrome® Black T has been used to determine the concentration of Ca2+ using complexometric titration method.
General description
Eriochrome® Black T is used as an indicator for complexometric titrations. It functions as an acid-base indicator. Eriochrome® Black T forms complex with Ca2+ and Mg2+, but it binds more strongly to Mg2+ ions.
Eriochrome® Black T is a hydroxyl-arylazo dye and is generally supplied as a monosodium salt. This dye exists as a dark violet powder with green metallic sheen. Eriochrome Black T is soluble in water and alcohol, but insoluble in common organic solvents. It is mainly used as an indicator in ethylenediaminetetraacetic acid (EDTA) method to determine hardness of water.
Legal Information
Eriochrome is a registered trademark of Huntsman Petrochemical, LLC
Packaging
100, 500 g in glass bottle
1 kg in glass bottle
This product has met the following criteria: