New Product Information about Potassium Iodide: Influence of Potassium Iodide Product Forms on Material Rheology

27.09.2016 | 12:43


Potassium iodide (KI) is well known for its use as a heat stabilisation additive in polyamide engineering plastics, in pharmaceutical drug synthesis and in the regulation of negative side effects in radioactive treatment after human exposure.

The general chemistry principles and benefits of KI in these applications are known and understood. However, different operational and changing practices in existing applications may require different product forms of KI to optimise the feeding accuracy and dispersion quality of KI in their resulting formulations. KI’s increasing and diversified use is demanding new capabilities in controlling the particle size, particle size distribution and improving production consistency to meet customers’ expectations.

To support formulators and process engineers in choosing optimal KI product forms, work was undertaken to characterise the solid state rheology of three alternative product forms; William Blythe’s standard KI powder and two compacted powder flakes, < 1 and < 5mm.

Product flow characteristics of ‘compacted’ and standard KI grades are presented as options to make improved use of these product forms to broaden and optimize the processing envelope for powder based KI grades.

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