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  • ISO 900:1977

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    Aluminium oxide primarily used for the production of aluminium Determination of titanium content Diantipyrylmethane photometric method

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Withdrawn date:  26-02-2019

    Language(s):  English, French

    Published date:  01-10-1977

    Publisher:  International Organization for Standardization

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    Abstract - (Show below) - (Hide below)

    Applicable to all products having a titanium dioxide content of equal to or more than 0.001 % (m/m). Describes the preparation of the diantipyrylmethane solution and the preparation of the titanum standard solution. The procedure of the preparation of a principal solution or the chemical analysis by an alkaline fusion is carried out according to ISO 804 replacing the nitric acid solution by the sulphuric one. After extraction of the fused mass with sulphuric acid solution formation of the titanium-diantipyrylmethane complex (approximately 4.6 N solution). Photometric measurement of the coloured complex at a wavelength of about 420 nm. Has also been approved by the IUPAC. Replaces and cancels ISO Recommendation R 900/1968 of which it constitutes a technical revision.

    General Product Information - (Show below) - (Hide below)

    Development Note Also numbered as BS 4140-6(1980) (07/2005)
    Document Type Standard
    Publisher International Organization for Standardization
    Status Withdrawn

    Standards Referenced By This Book - (Show below) - (Hide below)

    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
    BS 4140-4:1986 Methods of test for aluminium oxide Preparation of sample solution by alkaline fusion
    CEI EN 61284 : 1999 OVERHEAD LINES - REQUIREMENTS AND TESTS FOR FITTINGS
    BS 4140-13:1986 Methods of test for aluminium oxide Preparation of sample solution by treatment with hydrochloric acid under pressure
    UNI EN 1457-2 : 2012 CHIMNEYS - CLAY/CERAMIC FLUE LINERS - PART 2: FLUE LINERS OPERATING UNDER WET CONDITIONS - REQUIREMENTS AND TEST METHODS
    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 4140-1:1986 Methods of test for aluminium oxide Preparation and storage of test samples
    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

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 804:1976 Aluminium oxide primarily used for the production of aluminium Preparation of solution for analysis Method by alkaline fusion
    ISO 802:1976 Aluminium oxide primarily used for the production of aluminium Preparation and storage of test samples
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