ISO 2753:1973
Urea for industrial use; Determination of water content; Karl Fischer method

Standard No.

ISO 2753:1973

Release Date

1973

Published By

International Organization for Standardization (ISO)

Status

Withdraw 2002-05

Latest

ISO 2753:1973

Scope

Specifies the manner in which this method is to be applied in a reaction of any water present in urea with a solution of iodine and sulphur dioxide in a mixture of pyridine and methanol (Karl Fischer reagent). This reagent is first standadized by titration with a precisely known mass of water. The end point of the reaction is read by the direct visual or direct electrometric method. The method has also been approved by the IUPAC.

ISO 2753:1973 history

• 1973 ISO 2753:1973 Urea for industrial use; Determination of water content; Karl Fischer method