ISO 1592:1977 PDF
Urea for industrial use — Determination of nitrogen content — Titrimetric method after distillation
Название (английский):
ISO 1592:1977
Urea for industrial use — Determination of nitrogen content — Titrimetric method after distillation
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 4
- Дата публикации:
- 1 ноября 1977 г.
- Издание:
- ISO IS 1592 edition 1 version 1
- ICS:
- 71.080.30
Описание (английский):
The procedure is based on the catalytic conversion of nitrogen present in a test portion to ammonia by heating in concentrated sulphuric acid solution. Distillation and absorption of the ammonia in an excess of standard volumetric sulphuric acid solution and back-titration with standard volumetric sodium hydroxide solution in the presence of an indicator. - Replaces ISO Recommendation R 1592-1970.
Технические детали
- Технический комитет
- ISO/TC 47 - Chemistry
- SKU
- ISO 1592:1977