ISO 7099:1983 PDF
Phosphoric acid for industrial use (including foodstuffs) — Determination of hydrogen sulfide content — Titrimetric method
Название (английский):
ISO 7099:1983
Phosphoric acid for industrial use (including foodstuffs) — Determination of hydrogen sulfide content — Titrimetric method
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 4
- Дата публикации:
- 1 октября 1983 г.
- Издание:
- ISO IS 7099 edition 1 version 1
- ICS:
- 67.220.20
Описание (английский):
The hydrogen sulphide in a test portion is removed in a stream of nitrogen and absorbed in a solution of sodiumhydroxide in aqueous acetone. the sulphide ions are titrated with standard volumetric mercury(II) acetate solution, in the presence of 1,5-diphenylthiocarbazone (dithizone) as indicator. The method is applicable to products having hydrogen sulfide contents greater than or equal to 0.05 mg/kg.
Технические детали
- Технический комитет
- ISO/TC 47 - Chemistry
- SKU
- ISO 7099:1983