Sudan Chemical is a world-famous manufacturer, supplier, and exporter of Lab chemicals. Our RXSOL-33-3302-005 Iodine Solution 5% contains 5% of elemental iodine in a 10% solution of potassium iodide. It has been used steadily ever since it was originated. iodine is a form of elemental iodine, which may be helpful in hypothyroidism and goiter caused by insufficient iodine intake.