ISO 3138:1974 PDF
Anhydrous hydrogen fluoride for industrial use — Determination of non-volatile acid content — Titrimetric method
Название (английский):
ISO 3138:1974
Anhydrous hydrogen fluoride for industrial use — Determination of non-volatile acid content — Titrimetric method
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 2
- Дата публикации:
- 1 декабря 1974 г.
- Издание:
- ISO IS 3138 edition 1 version 1
- ICS:
- 71.060.30
Описание (английский):
Applicable to contents of between 0.005 % (m/m) and 0.3 % (m/m) expressed in sulphuric acid. Preparation of the samples according to ISO 3137. Removal of volatile acids by evaporation and titration of the remaining acidity with standard volumetric sodium hydroxide solution in the presence of phenolphthalein as indicator. The evaporation is carried out on a boiling water bath in a fume cupboard.
Технические детали
- Технический комитет
- ISO/TC 47 - Chemistry
- SKU
- ISO 3138:1974