ISO 6677:1983
Withdrawn
Hexafluorosilicic acid for industrial use — Determination of available fluorine content — Potentiometric method after distillation
Hardcopy , PDF
English, French
05-01-1983
09-23-2021
Covers a method consisting in separating the fluorine from a test portion by distillation in the presence of perchloric acid, followed by potentiometric titration of the distillate with lanthanum nitrate solution using a fluoride ion-selective electrode. Is applicable to products having total available fluorine contents in the range between 15 and 35 % (m/m).
| Committee |
ISO/TC 47
|
| DocumentType |
Standard
|
| Pages |
5
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| Standards | Relationship |
| BS 6445-1:1983 | Identical |
| NBN T 03 533 : 1985 | Identical |
| NFT 20 538 : 84 FD | Identical |
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