METHOD OF PRODUCING 2-ETHYLHEXYL NITRATE (VERSIONS) Russian patent published in 2013 - IPC C07C203/04 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing 2-ethylhexyl nitrate by nitration of 2-ethylhexanol with a mixture of sulphuric acid and nitric acid having the following composition (wt %): HNO₃ - 20-30%, H₂SO₄ - 55-61%, H₂O - 10-20% and washing the end product at temperature of 65-75°C first with water and then with 10-15% NaOH solution, characterised by that washing is carried out small volumes (weight ratio of 2-ethylhexyl nitrate:water equal to 1:0.075, 2-ethylhexyl nitrate: alkaline solution equal to 1:0.025), followed by coagulation of the suspension of mixtures with a small amount of a strong (75-82%) solution of ammonium nitrate. The invention also relates to a method of producing 2-ethylhexyl nitrate by nitration with a mixture of sulphuric acid and nitric acid having the following composition (wt %): HNO₃ - 20-30%, H₂SO₄ -55-61%, H₂O - 10-20% 2-ethylhexanol, characterised by that the end product is washed at temperature of 15-25°C with water; the layer of acid water is separated and anhydrous sodium sulphate is then added to the end product while also adding a small amount of soda, the mixture is stirred and the ready product is separated from suspended solids. In another version, the obtained 2-ethylhexyl nitrate is washed at temperature of 15-25°C with water; the layer of acid water is separated and the end product is passed through a layer of anhydrous sodium sulphate while adding a small amount of soda.

EFFECT: novel methods of producing 2-ethylhexyl nitrate, characterised by a shorter time for washing the end product and high efficiency of the apparatus.

3 cl