Separation of Acrylonitrile from Light Liquid-Paraffin and n-Heptane Extractants

6 Separation of Acrylonitrile from Light Liquid-Paraffin and n-Heptane Extractants 

Acrylonitrile content of the synthetic light liquid paraffin sample solution for extraction with water Weight of Ught liquid paraffin sample extracted with 2 x250 ml of water Weight of acrylonitrile present in light liquid paraffin test solution Weight of acrylonitrile recovered in fractions of azeotropic distillation, pg Mean recovery of acrylonitrile in first two fractions obtained by azeotropic distillation 

7 Determination of Acryionitriie in Aqueous, Acidic and Aikaiine Extractants 

The azeotropic-distillation procedure cannot be applied to this alcoholic extraction liquid. Transfer 16 ml of the aqueous alcohol plastic-extraction liquid and 16 ml of the blank alcoholic extraction liquid into two 25 ml stoppered graduated cylinders. To each cylinder add 2 ml of 0.2 M TMAI and 2 ml of distilled water and mix. Examine these solutions polarographically as described previously. 

The amount of acrylonitrile in the plastic-extraction liquid, ppm w/v, is given by  

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