ISO 6228:1980 (R2022)
Active , Reaffirmed Standard
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ISO 6228:1980 (R2022)

Chemical products for industrial use — General method for determination of traces of sulphur compounds, as sulphate, by reduction and titrimetry

Summary

Describes a method based on prior conversion of the sulphur compounds in a test portion to sulphate, if required, and reduction of the sulphate ions ti hydrogen sulphide by a mixture of hydriodic and phosphinic acids in the presence of hydrochloric acid. The hydrogen sulphide is entrained in a current of nitrogen and absorbed in a solution of sodium hydroxide in aqueous acetone, followed by titration of the sulphide ions with standard volumetric mercury(II) acetate or nitrate solution in the presence of 1,5-diphenyl-3-thiocarbazone (dithiozone) as indicator.

Notes

90.93 : Norme internationale confirmée

Technical characteristics

Publisher International Organization for Standardization (ISO)
Publication Date 11/01/1980
Confirmation Date 01/18/2022
Edition 1
Page Count 7
EAN ---
ISBN ---
Weight (in grams) ---
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