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BS 5050:1974

Current
Current

The latest, up-to-date edition.

Methods of test for cryolite
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

08-30-1974

Publisher

British Standards Institution

Co-operating organizations
Foreword
Methods
1 Scope
2 Preparation and storage of test samples
3 Determination of silica content
4 Determination of fluorine content
5 Determination of iron content
6 Determination of sodium content
7 Determination of aluminium content (gravimetric
   method)
8 Determination of aluminium content (atomic absorption
   method)
Figure
1 Typical form of steam distillation apparatus for use
   in determination of fluorine content

Preparation and storage of test samples, determination of silica, fluorine, iron and sodium contents and of aluminium content by gravimetric and atomic absorption methods.

This British Standard describes methods of test for natural and artificial cryolite having a NaF : AlF3 ratio of between 3 and 1.7.

NOTE The titles of the British Standards and ISO publications referred to in this standard are listed on the inside back cover.

Committee
W/-
DevelopmentNote
Supersedes 70/12741 DC. (07/2005) Reviewed and confirmed by BSI, December 2011. (11/2011)
DocumentType
Standard
Pages
20
PublisherName
British Standards Institution
Status
Current

Standards Relationship
ISO 1693:1976 Similar to
ISO 2367:1972 Similar to
ISO 2366:1974 Similar to
ISO 2830:1973 Similar to
ISO 3391:1976 Similar to
ISO 3392:1976 Similar to
ISO 1619:1976 Similar to
ISO 1694:1976 Similar to
ISO 1620:1976 Similar to

BS 4140-17:1986 Methods of test for aluminium oxide Determination of fluorine content
BS 4993-9:1980 Methods of test for aluminium fluoride for industrial use Determination of sulphur content (X-ray fluorescence spectrometric method)
BS 5050-11(1980) : 1980 METHODS OF TEST FOR CRYOLITE - DETERMINATION OF SULPHATE CONTENT
BS 4993-8:1980 Methods of test for aluminium fluoride for industrial use Determination of sulphate content
BS 5050-13(1983) : 1983 METHODS OF TEST FOR CRYOLITE - DETERMINATION OF PHOSPHORUS CONTENT
BS 5050-8:1980 Methods of test for cryolite Determination of calcium content
BS 5050-12(1980) : 1980 METHODS OF TEST FOR CRYOLITE - DETERMINATION OF SULFUR CONTENT (X-RAY FLUORESCENCE SPECTROMETRIC METHOD)
BS 4993-10:1983 Methods of test for aluminium fluoride for industrial use Determination of phosphorus content
BS 6337-2:1983 General methods of chemical analysis Method for determination of silicon content (reduced molybdosilicate spectrophotometric method)

BS 1752:1983 Specification for laboratory sintered or fritted filters including porosity grading
BS 3787(1964) : LATEST GLASS CONDENSERS WITH STANDARD JOINTS
BS 3145:1978 Specification for laboratory pH meters
BS 4123:1967 Schedule of preferred chemical indicators
BS 846:1985 Specification for burettes
BS 2586:1979 Specification for glass and reference electrodes for the measurement of pH
BS 3422(1961) : LATEST LABORATORY DEFLECTION pH METERS

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