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Sulphuric acid and oleums for industrial use -- Determination of sulphur dioxide content -- Iodometric method


Document Number: ISO 3423:1975
File Size: 263 kB
Language: English
Provider: ANSI
Shipping: Available for download - Link will be provided in My ComplianceOnline section

Price: $43.00
Product Details

Applicable of products the SO2 content of which is equal to or more than 2 mg/kg. Based on the displacement of the sulphur dioxide present in the test portion by a current of pure nitrogen and absorption in a known volume of iodine solution. Titration of the excess of iodine with standard volumetric sodium thiosulphate solution. The diagram of the glass apparatus for absorption is shown in a figure.

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