PD ISO/TR 4277:2009
Current
The latest, up-to-date edition.
Cryolite, natural and artificial. Conventional test for evaluation of free fluorides content
Hardcopy , PDF
English
30-06-2010
Foreword
Introduction
1 Scope
2 Principle
3 Reagents
4 Apparatus
5 Procedure
6 Expression of results
7 Assessment of results and modified procedure to
accommodate special samples
8 Test report
Bibliography
Specifies a conventional test for the evaluation of the free fluorides content of natural, artificial and recovered cryolite.
| Committee |
W/-
|
| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This Technical Report describes a conventional test for the evaluation of the free fluorides content of natural, artificial and recovered cryolite.
This method is applicable to products having free fluorides content greater than 0,15%(mass fraction) of AIF3 or 0,4%(mass fraction) of NaF.
| Standards | Relationship |
| ISO/TR 4277:2009 | Identical |
| ISO 1693:1976 | Cryolite, natural and artificial — Determination of fluorine content — Modified Willard-Winter method |
| ISO 3393:1976 | Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of moisture content — Gravimetric method |
| ISO 2367:1972 | Cryolite (natural and artificial) — Determination of aluminium content — 8- Hydroxyquinoline gravimetric method |
| ISO 3699:1976 | Anhydrous hydrogen fluoride for industrial use — Determination of water content — Karl Fischer method |
| ISO 2366:1974 | Cryolite, natural and artificial — Determination of sodium content — Flame emission and atomic absorption spectrophotometric methods |
| ISO 2830:1973 | Cryolite, natural and artificial — Determination of aluminium content — Atomic absorption method |
| ISO 3391:1976 | Cryolite, natural and artificial — Determination of calcium content — Flame atomic absorption method |
| ISO 3392:1976 | Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of water content — Electrometric method |
| ISO 3429:1976 | Sodium fluoride primarily used for the production of aluminium — Determination of iron content — 1,10- Phenanthroline photometric method |
| ISO 3566:1976 | Sodium fluoride primarily used for the production of aluminium — Determination of chlorides content — Turbidimetric method |
| ISO 1619:1976 | Cryolite, natural and artificial — Preparation and storage of test samples |
| ISO 6374:1981 | Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of phosphorus content — Atomic absorption spectrometric method after extraction |
| ISO 3430:1976 | Sodium fluoride primarily used for the production of aluminium — Determination of silica content — Reduced molybdosilicate spectrophotometric method |
| ISO 5938:1979 | Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of sulphur content — X-ray fluorescence spectrometric method |
| ISO 5930:1979 | Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of phosphorus content — Reduced molybdophosphate photometric method |
| ISO 4277:1977 | Cryolite, natural and artificial — Conventional test for evaluation of free fluorides content |
| ISO 1694:1976 | Cryolite, natural and artificial — Determination of iron content — 1,10- Phenanthroline photometric method |
| ISO 3431:1976 | Sodium fluoride primarily used for the production of aluminium — Determination of soluble sulphates content — Turbidimetric method |
| ISO 4280:1977 | Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of sulphate content — Barium sulphate gravimetric method |
| ISO 1620:1976 | Cryolite, natural and artificial — Determination of silica content — Reduced molybdosilicate spectrophotometric method |
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