ISO 8214:1985
Surface active agents — Washing powders — Determination of inorganic sulfates — Gravimetric method
Название (английский):
ISO 8214:1985
Surface active agents — Washing powders — Determination of inorganic sulfates — Gravimetric method
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 3
- Дата публикации:
- 12 декабря 1985 г.
- Издание:
- ISO IS 8214 edition 1 version 1
- ICS:
- 71.100.40
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Цена:25 €
Описание (английский):
From a test portion all ethanol-soluble matter is removed by extraction with ethanol. In the presence of silicates the solution of the residue is treated with hydrochloric acid and evaporated to dryness. The residue is dissolved in water and the operations are repeated twice. The last solution is filtered and in the filtrate or in the silicatefree solution of the first step the sulfates are precipitated with barium chloride. The precipitate is filtered, washed, heated at 900 degree Celsius and weighed.
Abstract
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