ISO 6229:1980
Withdrawn
Sodium hexafluorosilicate for industrial use — Determination of free silica content — Gravimetric method
Hardcopy , PDF
English, French
07-01-1980
02-19-2019
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).
| Committee |
ISO/TC 47
|
| DocumentType |
Standard
|
| Pages |
2
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| Standards | Relationship |
| NFT 20 531 : 84 FD | Identical |
| DIN ISO 2176:1997-05 | Identical |
| NBN T 03 532 : 1983 | Identical |
| BS 5705-5:1981 | Identical |
| DIN ISO 2176:1997-05 | Corresponds |
Please Login or Create an Account so you can add users to your Multi user PDF Later.
Important note : All end users must be registered with an Account prior to user licenses being assigned.
Users cannot be edited or removed once added to your Multi user PDF.