Indicators for Titration

Indicators for Titration — covers organic dye compounds that reversibly change color or fluorescence intensity following changes in solution pH or the concentration of certain metal ions. This group includes both classic acid-base indicators and metal indicators for complexometric titration.

Indicators for Titration are used by analysts and chemistry researchers in analytical chemistry to visually mark the endpoint of acid-base titrations, such as in assays with xylenol blue or chlorophenol red. Metal indicators such as calmagite and calcein are also used in EDTA complexometric titrations for determining calcium and magnesium content, including fluorometric methods.

Example products in this collection: TCI X0052 29412-85-9 Methylxylenol Blue, TCI C0003 Calcein Sodium Salt (mixture of isomers) [for Fluorometric Determination of Ca], TCI X0016 125-31-5 p-Xylenol Blue, TCI C0004 154071-48-4 Calcein (mixture of isomers) [for Fluorometric Determination of Ca], TCI B0998 40070-59-5 Bromoxylenol Blue, TCI C0008 3147-14-6 Calmagite [Metal indicator for Ca, Mg etc.], TCI B0817 5833-18-1 Ethyl Bis(2,4-dinitrophenyl)acetate, TCI C0245 4430-20-0 Chlorophenol Red.

Choose an indicator based on its pH transition range, selectivity toward the target metal ion, and the purity or isomer composition of mixtures listed in the product specifications. All products are genuine Tokyo Chemical Industry (TCI) Japan products, with purity, packaging, and storage conditions listed on each item's page.

Other categories at the same level under Titration Reagents, often used together in one laboratory workflow:

Back to Titration Reagents. For large-volume procurement, special packaging, or specific grades, contact the AMI Scientific team — official distributor of TCI Japan in Indonesia — to check availability and lead time directly from Japan.

Related TCI catalogs (PDF)

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