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

Standard No.

ISO 3705:1976

Release Date

1976

Published By

International Organization for Standardization (ISO)

Latest

ISO 3705:1976

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.

ISO 3705:1976 history

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