A database about Preparation of Laboratory Reagents. A Project of SCIENCE Pakistan


Measure and pour into a 250 mL beaker 89 mL of distilled water. Stir on a magnetic stirrer. Carefully add 15 mL of concentrated sulfuric acid. Add and dissolve 1.0 g n,n-dimethyl-p-phenylenediamine sulfate. Add 5 g of Florisil and stir the mixture until all is absorbed. Allow the adsorbant to settle and decant the supernatant solution.
Add 200 ml sulphuric acid to 700 ml water, cool, and add 1g of N,N-dimethyl-p-phenylenediamine (p-aminodimethylaniline) and dilute ti 1 liter.
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