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

ISO-3705 - 1ST EDITION - CURRENT


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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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Document Number

ISO 3705:1976

Revision Level

1ST EDITION

Status

Current

Publication Date

Sept. 1, 1976

Committee Number

ISO TC 47