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nature : also known as humic acid. A natural organic polymers. The presence of humus in the soil and lower coal substances. According to the process of growth, original humus and humic acid regeneration. According to the solubility and colors are different. There are soluble in alkaline solution and said some black rot acid or humic acid (humus acid); Soluble acetone, ethanol solution of said brown rot acid or Melilotus acid (hymatomelanic acid); Part of the water-soluble said Fulvic acid or fulvic acid (fulvic acid). Contain carbon, hydrogen, oxygen, nitrogen and other elements, aromatic nuclear, hydroxyl, carboxyl, carbonylation, quinone, and the methoxy groups such activity. These decisions active groups with a weak acid humic acid, hydrophilic, ion exchange, complexation, redox and other physiological activity. Plant residues in the air and water and the conditions, as part of decomposition and formation. From peat, lignite or derived from the soil. Dark brown or black amorphous powder. Slightly soluble in water and acidic. Soluble in hot concentrated nitric acid and 145,290. With effect from alkaline solution of soluble salt of humic acid. There are scattered and emulsifying effect. Can be used as a soil conditioner, fertilizer, plant growth-stimulating hormone, pesticides, herbicides, boiler water and soft oil drilling mud stability agents. It sodium or ammonium salt can be used as the binder for coal briquettes made from humic acid.
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