工业用乙醛 铁含量的测定 2,2"-联吡啶光度法
Acetaldehyde for industrial use -- Determination of iron content -- 2,2''- Bipyridyl photometric method
摘要: The principle consists in the evaporation to dryness of a test portion and dissolution of the residue in hydrochloric acid. Reduction of iron(III) by means of hydroxylammonium chloride. Formation of the iron(II)- 2,2''-dipyridyl complex. Photometric measurement of the coloured complex at a wavelength of about 522 nm. Specifies the use of a spectrophotometer or photoelectric absorptionmeter. As an alternative it is permitted to employ a visual method comparing the test solution with a series of reference solutions. Has also been approved by the IUPAC.
标准编号: ISO 2886-1973
发布单位: IX-ISO
发布日期: 1973年12月1日
状态: 废止
强制性标准:
实施日期: 1973年12月1日
开本页数: 5
中国标准分类号:
G G15
有机化工原料
国际标准分类号: 71 71.080.80