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BS 4993-1:1974

Current
Current

The latest, up-to-date edition.

Methods of test for aluminium fluoride for industrial use Determination of fluorine content
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

28-02-1974

Cooperating organizations
Foreword
Method
1. Scope
2. Principle
3. Reagents
4. Apparatus
5. Procedure
6. Calculation
Figures
1. Typical form of steam distillation apparatus
    for use in determination of fluorine content

Fusion of a test portion with sodium carbonate and separation of the fluorine by distillation with sulphuric acid. Titration of the distillate with thorium nitrate solution using either sodium alizarinsulphonate with or without methylene blue as masking agents, or methylthymol blue as indicator.

This Part of BS 4993 specifies a modified Willard-Winter method for the determination of the fluorine content of aluminium fluoride for industrial use.

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

Committee
W/-
DevelopmentNote
Supersedes 71/53613 DC. (07/2005) Reviewed and confirmed by BSI, December 2011. (11/2011)
DocumentType
Standard
Pages
10
PublisherName
British Standards Institution
Status
Current

Standards Relationship
ISO 3391:1976 Similar to
ISO 2362:1972 Similar to
ISO 3392:1976 Similar to

BS 4993-5:1980 Methods of test for aluminium fluoride for industrial use Determination of moisture content (Karl Fischer method)
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 5050-9(1980) : 1980 METHODS OF TEST FOR CRYOLITE - DETERMINATION OF MOISTURE CONTENT (KARL FISHER METHOD)
BS 5659-5:1979 Methods of test for acid-grade fluorspar Determination of available fluorine content
BS 4993-7:1980 Methods of test for aluminium fluoride for industrial use Determination of sodium 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 5050-10(1980) : 1980 METHODS OF TEST FOR CRYOLITE - DETERMINATION OF MOISTURE CONTENT (GRAVIMETRIC METHOD)
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 4993-6:1980 Methods of test for aluminium fluoride for industrial use Determination of moisture content (gravimetric method)

BS 1848(1952) : LATEST GLASS CONDENSERS
BS 3145:1978 Specification for laboratory pH meters
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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