BS 4993-1:1974
Current
The latest, up-to-date edition.
Methods of test for aluminium fluoride for industrial use Determination of fluorine content
Hardcopy , PDF
English
28-02-1974
Important note : Users cannot be edited or removed once added to your Multi user PDF.
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.
| 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
|
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.
| 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 |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.