Molecular formula : no
MW : No
CAS : No
nature : Rot in pedology planting acid accustomed said humic acid, also known as humic acid, a natural organic carbon polymers. Extensive presence of organic matter in soil, peat, lignite, coal and weathered lake and ocean sediments, it is for organisms (mostly plants) through the wreckage of microbial decomposition, and a series of chemical processes and the formation of organic matter. The weathered coal humic acid, or by artificial coal oxidation (such as using air, ozone and nitric acid treatment) Formation of humic acid, humic acid regeneration said. Humic acid is the molecular weight varies, but similar structure of the complex is not the same substances, mixtures, molecular structure in general : it is an intermediate containing aromatic ring of skeleton, there are many around carboxyl, hydroxyl and other functional divisions and some amino, amino sugars fragments. Generally 45-70% carbon, hydrogen 2-6%, 30-50% oxygen, nitrogen 1-6%, and sometimes sulfur knife. The molecular weight of magnitude more credible to 102-104.
Preparation : Natural humic acid from the soil, peat, lignite, coal and weathering sapropelinite other natural material extracted. The extraction method is used acid at first, to shed some minerals extracted. The extraction method is by using the acid treatment, to shed some minerals, and then diluted alkali solution extraction-plus a sprig, and to be humic acid precipitation. Humic acid in the solvent under the solubility, can be divided into three components : acetone or ethanol-soluble part of the acid called brown rot; Do not dissolve as part of the acetone black rot acid; Acid soluble in the desert was known as part of fulvic acid (also known as the fulvic acid). Selection of new extraction agent, improved methods of extraction, the solution extraction process engineering issues, could provide efficient production to meet the purpose for the products and lower production costs, it was reported that raw materials peat 0.5% aqueous solution of phosphoric acid in the 70-80 ° C for handling demineralized , the mixture through a filter, washed, then 25% and 2% KOH NH4OH solution [peat : KOH : NH3 = 1 : (0.5-0.8) : (0.05-0.004), the weight ratio], in 40 -50 ° C heat, stirring circumstances in 2 hours, and then spend the phosphoric acid and pH of the cooling, with the final purification activity Authorities adsorption can be obtained high yield, good quality humic acid. Peat called China with an area of about 5,000 hectares, the total reserves of about 270 millions t, peat humic acid content is generally 30-50% (dry basis). Lignite content of 20-80% (dry basis), weathered coal generally 5-60%, and my morals and lignite coal resources are very rich. China's humic acid purification products mainly humic acid, humic acid yellow, humic acid ammonium (potassium and sodium) salt, iron and chromium humic acid, humic acid and nitro-ammonium (K) salt and sodium humate Nitro, sulfomethylation sodium chromate, soil nutrient soil carbon More than 30 species, some of these products fertilizer most of fine chemical products.
purposes : humic acid macromolecules on even the carboxyl, hydroxyl and carbonyl, quinone-based, such as methicillin-functional groups. Metal ion exchange, adsorption, complexation, chelating effects. In a decentralized system as a polyelectrolyte pool, Peptizing and dispersion effect. Humic acid molecules have a certain amount of free radicals, which have biological activity. Therefore, humic acid and base products have multiple uses. My right of humic acid to have 10 years of history, has so far achieved 119 scientific research, the production of humic acid products reached 100,000 tons. China's current research and development of humic acid product output reached 100 million tons. China's current research and development of humic acid products, initially for oilfield drilling mud, ceramic additives, procuring yeast Saccharomyces agents, and has trickled down to the industrial, agricultural, animal husbandry industry. In agriculture, and nitrogen, phosphorus, potassium and so-binding made of humic acid fertilizer (for example, the use of humic acid and ammonia which can be made from humic acid ammonium fertilizer), with the fertilizer efficiency, improve soil and stimulate crop growth, improving the quality of agricultural products and other workers can; Nitro humic acid can be used as a sterile rice who acid agent; humic acid magnesium, zinc humic acid, humic acid urea added iron in the soil magnesium deficiency, corn zinc deficiency, iron deficiency fruit trees have a good effect. The United States, Japan, Russia and other countries of humic acid fertilizer production began in the 1960s, now has foreign humic acid fertilizer toward high concentrations of humic acid fertilizer multi-component development. My rot fertilizer applied to agricultural research mega-step late, the production process is not mature enough, the quality of products was not stable, pending further research and development. Humic acid and related products used in processing environmental mercury, cadmium, lead, copper, zinc, nickel and chromium and other heavy metals in wastewater; The medicine women used to treat various diseases, endemic diseases, such as rheumatoid arthritis has also yielded results. In the area of industry, including pesticides, veterinary drugs and feed processing industries for application are as follows : (a) Humic cement superplasticizer. (2) Porcelain sodium humate. (3) boiler scale inhibitor. (4) drilling mud. (5) Humic dressing agent. (6), pesticides, veterinary drugs. (7) feed and feed additives.
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