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Determination of diethyl phthalate
Feb 03, 2016

Take the product 0.75g, precision, home 250ml an Erlenmeyer flask, adding ethanol to potassium hydroxide titrant precision (0.5mol/L) 25.0ml, water bath to reflux for 1 hour, cool to room temperature, add 2 drops of phenolphthalein indicator fluid, rapid titration with hydrochloric acid solution (0.5mol/L) Titrate colorless. And test for blank titration results correction per 1ml ethanol-potassium hydroxide titrant (0.5mol/L) 55.56mg C12H14O4.