ISO 6228:1980
Chemical products for industrial use — General method for determination of traces of sulphur compounds, as sulphate, by reduction and titrimetry
OVERVIEW
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.
COMMENTS
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PRODUCT DETAILS
| Status | Current |
|---|---|
| Edition | 1980 |
| No. of Pages | 7 |
| ICS Classification | 71.040.40 Chemical analysis |
| Committee | ISO/TC 47 |
| Available for Purchase | For sale in Singapore only |
| Adoption | ISO |