| Data |
Molecular formula : C3H8NO5P
MW : 169.07
CAS No. :1071-83-6
nature : white crystals. The temperature of 230 ° C (decomposition). At 25 ° C water solubility of 12g / L, respectively. It is not soluble in organic solvents in general, non-combustible, explosive, room temperature stability, ease of transport.
Preparation Methods : From categories divided into two methods of production, that is to Diglycolamidic acid (IDA) for the raw materials and methods of production of glycine-phosphite two alkyl ester as raw materials, production methods, which glycine-phosphite two alkyl France's largest production plant, the production most enterprises, production accounts for the National Glyphosate total production of about 80%, reaching 70,000 t; IDA device near capacity 30,000 t. It is divided into four categories : 1) Self-made (using trichloroacetic acid) IDA, double-Gan phosphine using concentrated sulfuric acid oxidation glyphosate production technology from the 20th century although since the 1980s, but due to calcium chloride strong acidic wastewater volumes, lower yield (IDA yield of about 70%), but only in a water system, its highest output in the 2000t (10% water), the beginning of the 1990s, production enterprises gradually reduce production decline. 2) production of trimethyl phosphite of enterprises trimethyl phosphite glyphosate production process, this method of water instead of solvent methanol, sodium hydroxide instead of triethylamine catalyst, and a reduction of post-processing, yield 65%, but the price of three methyl methacrylate than two, Therefore only three methacrylate production enterprises, the cost will have a certain competitiveness on the market. 3) use of methyl phosphite two glyphosate production process more enterprises, large-scale production plant, the process in recent years by optimizing production process conditions, the use of advanced equipment, such as automated operating system, which has achieved a series of technological advancement, product quality specifications have reached the international market the market demands, China mainly uses this process. 4) self-made (with two oxidative dehydrogenation diethanolamine) IDA IDA or outsourcing, the use of hydrogen peroxide oxidation - Gan phosphine Preparation glyphosate. The consumption of raw materials fixed : POM over 500kg / t, 500kg methanol / t, glycine 3891 / t, triethylamine 50kg / t, methyl phosphite two 1000 / t, hydrochloride is 3000 / t.
purposes : Glyphosate herbicides are organic phosphorus, weeding nature of the 1971 United States D.D. Baird discovered that the 20th century to the 1980s, the world has become an important herbicide varieties. Widely used in agriculture, forestry, animal husbandry, transportation and other areas, including forests, rubber plantations, farms, tea Mulberry, orchards, sugar cane fields, Border Road, forest fire buffer zone and the railway, airports, warehouses, oil depots, power stations and other non-farming weeding. Glyphosate in the soil breaks down quickly, and not injected.
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