ISO 2751:1973
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ISO 2751:1973
7731

Abstract 

Applicable to solutions of conventional concentration. The principle consists in measurement, at (20 0.5) 0C, of the quantity of 0.05 N acid solution required to effect a pH change from 8 to 6 for a solution containing 100 g of urea in 1000 ml of solution. For the measurement a pH meter is used fitted with a glass electrode and a calomel electrode. The method has also been approved by the IUPAC.


General information 

  •  :  Withdrawn
     : 1973-11
  •  : 1
     : 2
  •  : ISO/TC 47 Chemistry
  •  :
    71.080.30 Organic nitrogen compounds

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