ISO/R 1982:1971 PDF
Nitric acid for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric method
Nitric acid for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric method
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 4
- Дата публикации:
- 1 мая 1971 г.
- Издание:
- ISO OTHER 1982 edition 1 version 1
- ICS:
- 71.060.30
The method is applicable to the determination of iron contents greater than 0,0001 % (m/m). The principle consists in evaporation of a test portion, taking up by means of hydrochloric acid and reduction of iron(III) by means of hydroxylammonium chloride. Formation of iron(II)-2,2' -dipyridyl complex in ammonium acetate medium. Photometric measurement of the coloured complex at a wavelength of about 522 nm.
Технические детали
- Технический комитет
- ISO/TC 47 - Chemistry
- SKU
- ISO/R 1982:1971
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