ISO 5935:1984 PDF
Crude sodium borates for industrial use — Determination of total and alkali-soluble silica contents — Molybdosilicate spectrometric method
Crude sodium borates for industrial use — Determination of total and alkali-soluble silica contents — Molybdosilicate spectrometric method
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 4
- Дата публикации:
- 1 июня 1984 г.
- Издание:
- ISO IS 5935 edition 1 version 1
- ICS:
- 71.060.50
Specifies a method using test solutions to be prepared by fusion of a test portion with sodium carbonate for the determination of the total silica content, and by dissolution of the alkalisoluble part of a test portion in sodium hydroxide solution for the determination of the alkali-soluble silica content. This results in the formation of molybdosilicate, followed by spectrometric measurement at a wavelength of about 400 nm. Applies to products having total silica contents in the range 0,4 to 4,0 % (m/m) and alkali-soluble silica contents in the range 0,01 to 0,05 % (m/m).
Технические детали
- Технический комитет
- ISO/TC 47 - Chemistry
- SKU
- ISO 5935:1984
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