Active standard | Published: 01/09/1976

ISO 3705:1976

Sulphur for industrial use — Determination of arsenic content — Silver diethyldithiocarbamate photometric method
(Soufre a usage industriel — Dosage de l´arsenic — Méthode photométrique au diéthyldithiocarbamate d´argent)

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Detail information

Designation: ISO 3705:1976

Publication date: 01/09/1976

Pages: 2

Country: International technical standard

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Anotation

Description / Abstract: 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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