ISO/R 909:1968
$12.35
Hydrochloric acid for industrial use — Determination of iron content — 2,2′- Bipyridyl spectrophotometric method
Published By | Publication Date | Number of Pages |
ISO | 1968-12 | 8 |
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The principle consists in evaporation of the test portion, taking up by means of hydrochloric acid and reduction of iron(III) by means of hydroxylammonium chloride. Formation of an iron(II)-2.2'-bipyridyl complex in a buffered medium at a pH value between 4.5 and 6. Photometric measurement of the coloured complex at a wavelength of about 522 nm.
Published Code | ISO |
---|---|
Published By | International Organization for Standardization |
Publication Date | 1968-12 |
Pages Count | 8 |
Language | English |
Edition | 1 |
File Size | 297.0 KB |
ICS Codes | 71.060.30 - Acids |
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