Fulvic Acid Powder

It was found that the molecular structure of fulic acid contained less carbon and more oxygen than that of humic acid, and the content of acidic functional group (-COOH) was also higher than that of humic acid. In addition, the number of ketocarbonyl and hydroxyl groups contained in fulic acid was also higher than that of humic acid. Therefore, compared with humic acid, it had stronger acidity in aqueous solution according to Chemicalbook. At present, the specific molecular structure of fulic acid is not very clear. Based on the skeleton structure of humus carbon, the structure model of a certain fulic acid is shown in Figure 1. The carbon content of fulic acid is generally between 40% and 50%, the hydrogen content between 4% and 6%, and the oxygen content between 44% and 50%.