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ISO 3705:1976

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

Publication date:   Sep 1, 1976

General information

90.93 Standard confirmed   Jul 19, 2019

ISO

ISO/TC 47 Chemistry

International Standard

71.060.10   Chemical elements

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO 3705:1976
90.93 Standard confirmed
Jul 19, 2019