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. In its protonated form, Eriochrome Black T is blue.Click to see full answer. Also to know is, what is the use of EBT indicator?Eriochrome Black-T (EBT) is an azo compound, carcinogenic in nature. It is mainly used as an indicator in complexometric titrations for the determination of total hardness of water due to elements like calcium, zinc, magnesium and other metal ions.Furthermore, what does T stands for in eriochrome black T? So, “T” is likely a code for a color (no colors come to mind) or for some other property. The Eriochrome trademark is registered to Huntsman Petrochemical. Of the dyes listed on their site, some are labeled “TS”. Compared to “S” versions of the same dyes, the “TS” versions appear to be cheaper and/or lighter. Thereof, what is the composition of eriochrome black T indicator? 40% Ethanol/60% Triethanolamine Composition: Triethanolamine 67.57%, Ethyl Alcohol 28.62%, Isopropyl Alcohol 1.58%, Methyl Alcohol 1.43%, Eriochrome Black T 0.80% Density: 1 Color: Dark blue liquid Physical State: Liquid Solubility Information: Miscible Shelf Life: 6 Months Storage:…How do you make eriochrome black indicator?(i) the solution of indicator is prepared by dissolving 1 g of Eriochrome Black T in 15 ml of trienthanol amine and adding 5 ml of absoluta alcohol. It can also be prepared by dissolving 0.2 g of Eriochrome Black T in 20 ml of absolute alcohol. Use about 3 to 4 drops of the indicator solution.