ISO 6229:1980
Sodium hexafluorosilicate for industrial use — Determination of free silica content — Gravimetric method
Sodium hexafluorosilicate for industrial use — Determination of free silica content — Gravimetric method
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 2
- Дата публикации:
- 1 июля 1980 г.
- Издание:
- ISO IS 6229 edition 1 version 1
- ICS:
- 71.060.50
Covers a method, the principle of which is based on the extraction from a test portion of compounds soluble in acetic acid solution and weighing of the residue after heating at 600 °C, removal from the residue, of silica by evaporation with hydrofluoric acid solution and of residual fluorides by heating with ammonia solution, and reweighing of the residue after heating at 600 °C. Is applicable to products having free silica contents equal to or greater than 0,05 % (m/m).
Технические детали
- Технический комитет
- ISO/TC 47 - Chemistry
- SKU
- ISO 6229:1980
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