716995

ISO 2865:1973

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

standard by International Organization for Standardization , 12/01/1973

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Full Description

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.

 

Product Details

Published:
12/01/1973
Number of Pages:
5
File Size:
1 file , 400 KB
Same As:
BS 4140-19:1986
Note:
This product is unavailable in Ukraine, Russia, Belarus
 

Amendments, rulings, supplements, and errata

  1. ISO 2865/COR1:1991

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    Technical corrigendum 1