ISO 3332:1975
ISO 3332:1975 Ammonium sulphate for industrial use – Determination of ammoniacal nitrogen content – Titrimetric method after distillation
CDN $82.00
Description
Based on dissolution of a test sample in water, distillation of the ammonia after displacement by an alkali solution. Absorption in an excess of standard volumetric sulphuric acid solution and back-titration with standard volumetric sodium hydroxide solution in the presence of methyl red/methylene blue mixed indicator. A typical distillation apparatus is shown in a figure.
Edition
1
Published Date
1975-07-01
Status
PUBLISHED
Pages
4
Language
English
Format
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Abstract
Based on dissolution of a test sample in water, distillation of the ammonia after displacement by an alkali solution. Absorption in an excess of standard volumetric sulphuric acid solution and back-titration with standard volumetric sodium hydroxide solution in the presence of methyl red/methylene blue mixed indicator. A typical distillation apparatus is shown in a figure.
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