Thymolphthalein indicator (pH 8.8-10.5)

Description

General description
Thymolphthalien is an acid-base indicator which is colourless in acidic form and deep blue in basic form. Acidic form retains hydrogen on each hydroxyl group. It is suitable in preparing disappearing ink.

Properties

grade
ACS reagent
indicator (pH 8.8-10.5)

form
solid

technique(s)
UV/Vis spectroscopy: suitable
titration: suitable

ign. residue
≤1%

mp
248-254 °C
251-253 °C (lit.)