Product description
Oxalic acid is a dicarboxylic acid widely present in plants. As an antagonist of mineral elements, long-term consumption of vegetables high in oxalic acid can lead to diseases such as arthritis, hypocalcemia, and kidney stones. Oxalic acid can be used as a complexing agent, bleaching agent, precipitant, and reducing agent, and has a wide range of applications in the pharmaceutical, printing, and plastics industries. Fe3+ can react with sulfosalicylic acid to form a purple complex under acidic conditions, which has a characteristic absorption peak at 510nm. Oxalic acid and its conjugate base can lighten the color of this purple complex. The absorbance of the Fe3+-sulfosalicylic acid complex decreases with increasing oxalic acid content, and the oxalic acid content can be detected by measuring the change in absorbance.
Additional Materials and Equipments Required
Visible spectrophotometer, 1mL glass cuvette (optical path 1cm), pipette, balance, low-temperature centrifuge.