ISO 6677:1983
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Hexafluorosilicic acid for industrial use Determination of available fluorine content Potentiometric method after distillation
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
23-09-2021
English, French
01-05-1983
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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).
| 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Withdrawn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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