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PD ISO/TR 4277:2009

Current
Current

The latest, up-to-date edition.

Cryolite, natural and artificial. Conventional test for evaluation of free fluorides content
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

30-06-2010

Publisher

British Standards Institution

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.

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.

Committee
W/-
DocumentType
Standard
Pages
16
PublisherName
British Standards Institution
Status
Current

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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Hardcopy - English
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