Phenolphthalein Indicator. 0,1%. 125 ml

Phenolphthalein is an organic compound often used as an pH indicator. It is used in titrations, turns colorless in acidic solutions and pink in basic solutions. Ingredients : Phenolphthalein 0.1gm Ethanol 50ml Distilled water 50ml Note: Filter if a precipitate forms **Formula adjusted, standardized to suit performance parameters Principle And Interpretation Phenolphthalein is often used as an indicator in acid–base titrations. It turns colorless in acidic solutions and pink in basic solutions. It belongs to the class of dyes known as phthalein dyes. Phenolphthalein is slightly soluble in water and usually is dissolved in alcohol. The principle behind the function of an indicator is that it reacts with water to form the hydrogen cation H+ or hydronium ion H3O+. The reaction changes the color of the indicator molecule.