ISO 3330:1975
Ammonium nitrate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
OVERVIEW
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.
COMMENTS
-
PRODUCT DETAILS
| Status | Withdrawn - 06 Jan 2026 |
|---|---|
| Edition | 1975 |
| No. of Pages | 4 |
| ICS Classification | 71.060.50 Salts |
| Committee | ISO/TC 47 |
| Available for Purchase | For sale in Singapore only |
| Adoption | ISO |