Description
Specification
Item | Standard |
Assay | > 99.6% |
Fe | < 10 ppm |
Ca | < 10 ppm |
Na | < 10 ppm |
Cl | < 1 ppm |
K | < 1 ppm |
Pb | < 1 ppm |
Heavy Metal | < 10 ppm |
Oxalic acid, also known as oxalic acid, is widely found in plant-derived foods. Oxalic acid is a colorless columnar crystal, soluble in water and insoluble in organic solvents such as ether.
Oxalate has a strong coordination effect and is another kind of metal chelating agent in plant food. When oxalic acid is combined with some alkaline earth metal elements, its solubility is greatly reduced, such as calcium oxalate is almost insoluble in water. Therefore, the presence of oxalic acid has a great influence on the bioavailability of essential minerals. When oxalic acid is combined with some transitional metal elements, soluble complexes are formed due to the coordination of oxalic acid, and its solubility is greatly increased.
Oxalic acid began to sublimate at 100 ° C, sublimed rapidly at 125 ° C, sublimed a lot at 157 ° C, and began to decompose.
It can react with base, and can produce esterification, acyl halogenation, and amidation reactions. Reduction reactions can also occur, and decarboxylation reactions can occur under heat. Anhydrous oxalic acid is hygroscopic. Oxalic acid can form water-soluble complexes with many metals.
Complaint
