Aluminium oxide primarily used for the production of aluminium — Determination of fluorine content — Alizarin complexone and lanthanum chloride spectrophotometric method

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

12-01-1973

Publisher

International Organization for Standardization

Applicable to products having F contents of more than 0.003 % (m/m). Dissolution of a test portion by attack by sulphuric acid under pressure. Separation of the fluorine by distillation at a temperature of (150 1) °C by sulphuric acid. The distillation is carried out by the method described in ISO 1693. Formation of a blue coloured complex between fluorine and alizarin complexone/lanthanum chloride reagent at a pH between 4.5 and 4.6. Addition of acetone to increase the stability and sensitivity of the fluorine complex. Spectrophotometric measurement of the complex at a wavelength of about 620 nm. Has also been approved by the IUPAC.

DevelopmentNote	Also numbered as BS 4140-17(1986) (07/2005)
DocumentType	Standard
Pages	3
ProductNote	This standard are referes to ISO/R 802, ISO/R 1693, ISO/R 2073
PublisherName	International Organization for Standardization
Status	Current

Standards	Relationship
SS-ISO 2828 : 1993	Identical
NBN T 03 418 : 1983	Identical

BS 4140-16:1986	Methods of test for aluminium oxide Determination of zinc content by flame atomic absorption
BS 4140-9:1986	Methods of test for aluminium oxide Measurement of the angle of repose
ISO 17947:2014	Fine ceramics (advanced ceramics, advanced technical ceramics) — Methods for chemical analysis of fine silicon nitride powders
BS 4140-6:1980	Methods of test for aluminium oxide Determination of titanium content
BS 4140-4:1986	Methods of test for aluminium oxide Preparation of sample solution by alkaline fusion
13/30261099 DC : 0	BS ISO 17947 - FINE CERAMICS (ADVANCED CERAMICS, ADVANCED TECHNICAL CERAMICS) - METHODS FOR CHEMICAL ANALYSIS OF FINE SILICON NITRIDE POWDERS
BS ISO 17947:2014	Fine ceramics (advanced ceramics, advanced technical ceramics). Methods for chemical analysis of fine silicon nitride powders
BS 4140-1:1986	Methods of test for aluminium oxide Preparation and storage of test samples
BS 4140-13:1986	Methods of test for aluminium oxide Preparation of sample solution by treatment with hydrochloric acid under pressure
BS 4140-7:1986	Methods of test for aluminium oxide Determination of iron content
BS 4140-22:1980	Methods of test for aluminium oxide Determination of manganese content
BS 4140-5:1986	Methods of test for aluminium oxide Determination of silica content
BS 4140-8:1986	Methods of test for aluminium oxide Determination of absolute density using a pyknometer
BS 4140-12:1986	Methods of test for aluminium oxide Determination of vanadium content
BS 4140-11:1986	Methods of test for aluminium oxide Determination of sodium content
BS 4140-10:1986	Methods of test for aluminium oxide Determination of untamped density