ISO 5791:1978 PDF
Ammonium nitrate for industrial use — Determination of water content — Karl Fischer method
Open preview (PDF)Ammonium nitrate for industrial use — Determination of water content — Karl Fischer methodTitle (English):
ISO 5791:1978
Ammonium nitrate for industrial use — Determination of water content — Karl Fischer method
- Document status:
- Withdrawn
- Format:
- Electronic (PDF)
- Number of pages:
- 2
- Publication date:
- November 1, 1978
- Edition:
- ISO IS 5791 edition 1 version 1
- ICS:
- 71.060.50
Description (English):
Describes a method applicable to products having water contents equal to or greater than 0,05 % (m/m). The principle of determination is based on the reaction of water with a solution of iodine and sulphur dioxide in a pyridine-methanol mixture (Karl Fischer reagent) which is standardized previously by titration of an exactly known mass of water. The end point of the reaction is then determined by means of the direct electrometric method.
Technical details
- Technical committee
- ISO/TC 47 - Chemistry
- SKU
- ISO 5791:1978
