'Ammonium sulphate for industrial use -- Determination of iron content -- 2, 2- Bipyridyl photometric method''

Document Number: ISO 2992:1974
File Size: 268 kB
Language: English
Provider: ANSI
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Price: $43.00
Product Details

Applicable to Fe contents of equal to or more than 0.0001 % (m/m). The reaction bases on the reduction of iron(III) by hydroxylammonium chloride. Formation of the complex between iron(II) and 2,2'-dipyridyl in a buffered medium (pH value between 4.5 and 6). Photometric measurement of the coloured complex at a wavelength of about 522 nm. Has also been approved by the IUPAC.

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