This standard was last reviewed and confirmed in 2018. Therefore this version remains current.
Abstract Preview
Three cases, defined by a preliminary test, are envisaged: silicates containing neither sulphides nor chlorates; silicates containing sulphides; silicates containing chlorates. The method based on boiling of an acidified test portion containing methyl orange and with a lead paper strip in the vapour. The presence of sulphides produces blackening of the paper and the presence of chlorates decolorizes the methyl orange. Volumetric*measurement of carbon dioxide evolved from silicates containing neither sulphides nor chlorates by reaction with a hydrochloric acid solution. The principle for the oxidation of sulphides and the reduction of chlorates are specified.
General information
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Status : PublishedPublication date : 1976-07
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Edition : 1Number of pages : 5
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- ICS :
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Salts
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Life cycle
A standard is reviewed every 5 years
Revisions / Corrigenda
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Now confirmed
ISO 1691:1976
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