Stains Indicator Reagents
1-NAPHTHOLPHTHALEIN
Product code RXSOL-69-5960-100
pH Indicator pH 7.3 colorless to reddish; 8.7 greenish to blue
Description
1-NAPHTHOLPHTHALEIN excellent quality manufacturer, exporter and supplier. 1-Naphtholphthalein (C28H18O4) is a pH indicator with a visual transition from colorless/reddish to greenish blue at pH 7.3 – 8.7.
Application
Application
As indicator in 0.1% or 0.04% solution in alcohol. pH 7.3 colorless to reddish; 8.7 greenish to blue. Particularly adapted for weak acids in strong alcoholic solution.
Precautions
Precautions
Range7.1(brownish)-8.3(blue/green) Water Solubility Insoluble in water. Soluble in ethanol.