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ISO 2865:1973

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Aluminium oxide primarily used for the production of aluminium -- Determination of boron content -- Curcumin spectrophotometric method

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Applicable to products having boron oxide contents of more than 0.0006 % (m/m). With sufficiently sensitive apparatus, the lower limit of application may be extended to 0.00008 % (m/m). The test portion is dissolved in phosphoric acid. Separation of the boron by distillation as methyl borate. Formation of a red coloured complex between the boron and the curcumin reagent at pH 7. Spectrophotometric measurement of the complex at a wavelength of about 550 nm.


SDO ISO: International Organization for Standardization
Document Number ISO 2865
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 47/SC 7
Publish Date Document Id Type View
Not Available ISO 2865:1973 Revision
Not Available Revision