ISO/DIS 5314

This Draft International Standard is in the enquiry phase with ISO members.

Will replace ISO 5314:1981

Abstract

The method consists in distilling of the ammonia from an alkaline solution, absorbing in an excess of standard volumetric sulphuric acid solution and back-titrating with standard volumetric sodium hydroxide solution. It is applicable only in the absence of urea or its derivatives, of cyanamide and of organic nitrogenous compounds.