Tag Archives: How to Determinate the Acidity and Content of 40% Glyoxal Solution

1. Determination of Acidity 1.1 Reagents and Solutions a) Sodium hydroxide standard titration solution: 0.1mol/L. b) Bromothymol blue indicator: 1g/L (ethanol solution). 1.2 Analysis Weigh about 1g of the sample (accurate to 0.0002g) and place it in a 250ml Erlenmeyer flask pre-placed with 20ml of water. Add 3-4 drops of bromothymol blue indicator. Titrate with […]