Abstract
The method of iodine determination in organic compounds according to Schoniger [3, 4] was improved by using an alkaline absorption solution of DBH. In contrast to elemental bromine DBH is a stable and easy to handle crystalline compound. For the removal of the excess of DBH 5-sulfosalicylic acid (C7H6O6S × 2H2O [5965-83-3]) [5] is more suitable than formic acid [64-18-6]. Assays for the determination of 2-iodobenzoic acid in the range from 1 to 25 mg iodine are described. 32 organic iodine compounds, mostly x-ray contrast media, could be analyzed with a percentage relative standard deviation of about 0.2%.
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