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Is Calconcarboxylic Acid vegan?

Calconcarboxylic Acid

Vegan

Calconcarboxylic Acid is a synthetic azo dye used as a metallochromic indicator in complexometric titrations of calcium with EDTA in the presence of magnesium. It is structurally related to Eriochrome Blue Black R.

Also known as NN indicator, Patton and Reeder's indicator
CAS number 3737-95-9
Last reviewed 3 June 2026

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