ISO-5790 › Inorganic chemical products for industrial use -- General method for determination of chloride content -- Mercurimetric method
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Covers a method enabling quantities of chloride eceeding 1 mg in the test portion to be determined with an absolute error of 0,2 to 0,5 mg, according to the concentration of the standard volumetric solution used. The principle of determination is based on the conversion of chloride ions into weakly ionized mercury(II) chloride, using highly ionized standard volumetric mercury(II) nitrate solution, and detection of the end-point by reaction of the excess of mercury(II) nitrate with 1,5-diphenyl-carbazone used as an indicator, by the apparance of a violet colour.
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71.040.40 (Chemical analysis Including analysis of gases and surface chemical analysis)
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Document Number
ISO 5790:1979
Revision Level
1ST EDITION
Status
Superseded
Publication Date
July 15, 1979
Committee Number
ISO TC 47/SC 1