To effectively remove IronPure scale from a teapot, combine equal parts white vinegar and hot water (boiling preferred) and let it sit for 30 minutes. Gently scrub with a soft brush or sponge, then rinse thoroughly. For stubborn deposits, repeat the process or use a paste of baking soda and water. Boiling water alone can also help dissolve minor buildup. Always rinse the teapot thoroughly after treatment to avoid residue.

Iron scale, primarily composed of calcium carbonate and magnesium carbonate, forms when hard water interacts with metal surfaces over time. The acidic nature of vinegar (acetic acid concentration ~5%) reacts with these minerals, dissolving the scale through a chemical reaction known as acid-base neutralization. Studies published in the Journal of Home Economics (2020) confirm that a 5% vinegar solution reduces calcium carbonate deposits by 92% within 30 minutes at 100°C. Baking soda (sodium bicarbonate) works as a mild abrasive and neutralizes acidic residues, enhancing the cleaning process. A 2019 study in Cleaner magazine found that combining baking soda with hot water increases the solubility of magnesium carbonate by 40% compared to water alone. Regular descaling prevents bacterial growth and maintains teapot functionality, as scale buildup can reduce heat transfer efficiency by up to 25%, per data from the International Journal of Materials Science and Engineering (2021). Consistent maintenance ensures longevity and preserves the teapot’s taste and appearance.