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19-01-2015, 10:13 PM

Sir , I was planning to this topic as mini project .so kindly provide me necessary details ,apapplication, and method to do it in college laboratory

jaseela123d · 23-03-2017, 02:35 PM

The report highlights the current state of technology for producing nicotine sulfate, deficiencies in technology developed by NCL, alternative technology developed by CTRI and business opportunities in the production of nicotine sulfate. The report traces the history of tobacco and its introduction into India. It gives figures of tobacco production in the world and in our country-wise state and wise variety. The report details tobacco harvesting, curing and postharvest practices. The report also lists the different chemical components of tobacco. The various uses / applications of nicotine are given which include pesticides in the form of nicotine sulfate, smoking cessation products, etc. Although the use of nicotine sulfate is banned in India but has a good export potential. The report has not quantified the markets of the different products either in volumes or in value.

Nicotinic acid or niacin has received considerable attention because of its importance in the vitamin field. The production of this chemical compound has been the subject of intense research that has led to the development of several chemical processes focused mainly on the oxidation of nicotine, quinoline or beta-picoline by strong chemical oxidants such as sulfuric and nitric acids. The current large-scale production of nicotinic acid in this country is mainly based on quinoline and beta-picoline derived from coal tar because of the price advantage over nicotine, which is laboriously extracted from tobacco. Nicotinic acid is of increasing commercial importance because the human body can synthesize one of the constituents of the vitamin B complex. The cheapest and most readily available source of nicotinic acid is nicotine in waste tobacco products, but the Conversion process is rather uncomfortable. Nicotine can be oxidized with nitric acid with nicotinic acid nitrate and nicotinic acid is converted to nicotinic acid. The present invention is concerned. To the part of the process in which nicotine is oxidized to nicotinic acid nitrate.

In an ordinary commercial process of nicotine oxidation to nicotinic acid using nitric acid as an oxidizing agent, the nicotine is dissolved in dilute nitric acid and more nitric acid of about 50% concentration is heated to about 95-100 ° C in a large reaction The relatively cold nicotine nitrate solution is then added gradually to this hot acid for a period of up to 8 hours, during which time the nicotine nitrate is converted to nicotinic acid nitrate. The reaction vessel is then heated for A long period to evaporate substantially all remaining liquid. Sufficient cold water is then supplied to dissolve the nicotinic acid nitrate residue and this solution is brought to other apparatuses in which nicotinic acid is purified and converted into nicotinic acid. That nicotine is thought to be oxidized to nicotinic acid indicates that 29 moles of nitric acid are required to oxidize each mole of nicotine, another mole of nitric acid is needed to dissolve nicotine as nicotine nitrate. These relationships are fulfilled in commercial practice, even to the point of adding excess nitric acid over the amount indicated by these ratios to ensure complete reaction. Therefore, in the usual commercial practice of 30 to 31 or more moles of nitric acid per mole of nicotine are always present in the reaction vessel.

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