ISO 6229:1980 PDF
Sodium hexafluorosilicate for industrial use — Determination of free silica content — Gravimetric method
Open preview (PDF)Sodium hexafluorosilicate for industrial use — Determination of free silica content — Gravimetric methodTitle (English):
ISO 6229:1980
Sodium hexafluorosilicate for industrial use — Determination of free silica content — Gravimetric method
- Document status:
- Withdrawn
- Format:
- Electronic (PDF)
- Number of pages:
- 2
- Publication date:
- July 1, 1980
- Edition:
- ISO IS 6229 edition 1 version 1
- ICS:
- 71.060.50
Description (English):
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).
Technical details
- Technical committee
- ISO/TC 47 - Chemistry
- SKU
- ISO 6229:1980
