Purification method of acetonitrile for high performance liquid chromatographic analysis

Purification method of acetonitrile for high performance liquid chromatographic analysis

  • CN 105,085,318 A
  • Filed: 05/16/2014
  • Published: 11/25/2015
  • Est. Priority Date: 05/16/2014
  • Status: Active Application
First Claim
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1. the method for purification of efficient liquid phase chromatographic analysis acetonitrile, is characterized in that, comprises the steps:

  • A. get waste material acetonitrile solution, add acid solution, acid salt solution, acidic oxide, alkaline solution, subsalt solution, basic oxide or strong acid and strong base salts solution wherein;

    B. in the solution of step a gained, varsol is added, vibration, stratification;

    Discard water layer, and heat organic layer and steam varsol, retain acetonitrile;

    C. in the solution of step b gained, add oxygenant and stir, heating distills out acetonitrile;

    D. above-mentioned acetonitrile is passed into the sorbent material post that modified activated carbon is housed and carry out adsorption treatment;

    Obtain the efficient liquid phase chromatographic analysis acetonitrile of purity >

    =99.99% (wt).

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