| Message: | Nicotinic acid;3-Pyridinecarboxylic acid;Niacin;Vitamin B5
Molecular formula : C6H5NO2
MW : 123.11
CAS, GL-67-6
nature : colorless crystalline needle. The temperature of 236 ° C, 1 gram Scanning the water-soluble materials, soluble in boiling water and boiling alcohol, do not dissolve propanediol, chloroform and alkali solution, and lipid-soluble ether solvent. Can sublimation, odorless, micro-Weisuanmei.
Preparation Methods : 3-methylpyridine by oxidation, acid derived. Using 3-methylpyridine raw materials for another, which is to increase gas ammonia oxidation. The use of fluidized bed reactor, 3-methylpyridine, air and ammonia prorated mixed in vanadium in the catalyst under reaction 290-360. The nitrile tobacco use sodium hydroxide at 160 ° C hydrolysis. If the hydrolysis using ammonia to control the solubility hydrolysis, respectively nicotinic acid or nicotinamide. By nicotine (tobacco) and nicotinic acid can be produced. The use of fluidized bed reactor, ferric ammonium citrate catalyst, 65-105 ° C in air oxidation gas. Industry could also quinolinic acid for the production of raw materials, used ozone oxidation, decarboxylation of nitrate or oxidation, decarboxylation method.
purposes : the goods of vitamins drugs and nicotinamide collectively vitamin PP, for the anti-rough skin disease, blood can also be used for expansion of medicine, food for a large number of feed additives. As pharmaceutical intermediates for isoniazid, nicotinamide, nikethamide and Hexanicit the production.
Structure: |
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