ISO 1981:1977 PDF
Nitric acid for industrial use — Determination of nitrous compounds — Titrimetric method
Название (английский):
ISO 1981:1977
Nitric acid for industrial use — Determination of nitrous compounds — Titrimetric method
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 3
- Дата публикации:
- 1 ноября 1977 г.
- Издание:
- ISO IS 1981 edition 1 version 1
- ICS:
- 71.060.30
Описание (английский):
Two cases are considered: content of nitrous compounds, expressed as HNO2, equal to or greater than 0,01 % (m/m) and content of nitrous compounds, expressed as HNO2, less than 0,01 % (m/m). The principle consists in oxidatiuon of the compounds present in a test portion by an excess of standard volumetric potassium permanganate solution. Addition of an excess of a standard volumetric iron(II) sulphate solution, and titration of this excess with a standard volumetric potassium permanganate solution. Replaces ISO Recommendation R 1981-1971.
Технические детали
- Технический комитет
- ISO/TC 47 - Chemistry
- SKU
- ISO 1981:1977