ISO 2363:1972
w
ISO 2363:1972
7202

Abstract 

The method ia applicable of oxide of nitrogen contents equal to or greater than 0,00002 % (m/m). The principle is based on oxidation of nitrous nitrogen to nitric nitrogen by potassium permanganate. Reaction of nitric nitrogen with 2,4-xylenol under specified conditions to form a nitrate derivate. Distillation of the nitrate derivate and absorption in sodium hydroxide solution. Spectrophotometric measurement of the yellow coloured nitrophenol at a wavelength of about 445 nm.


General information 

  •  :  Withdrawn
     : 1972-11
  •  : 1
     : 4
  •  : ISO/TC 47 Chemistry
  •  :
    71.060.30 Acids

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