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Date: 7-8-2017
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NITRATION OF PROPANE (Production of Nitroparaffins)
Nitrating propane produces a complex mixture of nitro compounds ranging from nitromethane to nitropropanes. The presence of lower nitroparaffins is attributed to carbon-carbon bond fission occurring at the temperature used. Temperatures and pressures are in the range of 390°–440°C and 100–125 psig, respectively. Increasing the mole ratio of propane to nitric acid increases the yield of nitropropanes. Typical product composition for 25:1 propane/acid ratio is:
Nitropropanes are good solvents for vinyl and epoxy resins. They are also used to manufacture rocket propellants. Nitromethane is a fuel additive for racing cars.
Figure 1.1. Effect of temperature on the dehydrogenation of light paraffins at one atmosphere.
Nitropropane reacts with formaldehyde producing nitroalcohols:
These difunctional compounds are versatile solvents, but they are expensive.
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مخاطر عدم علاج ارتفاع ضغط الدم
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اختراق جديد في علاج سرطان البروستات العدواني
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مدرسة دار العلم.. صرح علميّ متميز في كربلاء لنشر علوم أهل البيت (عليهم السلام)
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