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Homepage>ISO 3705:1976-Sulphur for industrial use — Determination of arsenic content — Silver diethyldithiocarbamate photometric method
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sklademVydáno: 1976
ISO 3705:1976-Sulphur for industrial use — Determination of arsenic content — Silver diethyldithiocarbamate photometric method

ISO 3705:1976

ISO 3705:1976-Sulphur for industrial use — Determination of arsenic content — Silver diethyldithiocarbamate photometric method

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Označení normy:ISO 3705:1976
Počet stran:2
Vydání:1
Vydáno:1976
DESCRIPTION

ISO 3705:1976


Applicable to products having As contents equal or more than 0.5 mg/kg. In a well-ventilated cupboard, dissolution of a test portion in carbon tetrachloride. Oxidation of sulphur by bromine and nitric acid. Heating in a boiling water bath to eliminate the exess of bromine, carbon tetrachloride and nitric acid. The analysis is carried out according to ISO 2590. The replacement of some reagents shall be noted.
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