and maintained at 150 u00b0 c in the reactor which has been pressurized with 600 psig hydrogen after 1 hour and 20 minutes at this temperature and pressure gas chromatographic analysis indicates about 73 tallow 2 ethylhexylamine about 20 di 2 ethylhexyl amine and 7 of the imine reactant two hundred and seventy one and one half grams 0 698 gram moles of this amine 79 1 grams of the solvent isopropyl alcohol 76 2 grams of sodium bicarbonate nahc0 3 2 0 grams of sodium bisulfite nahs0 3 and 54 mg of the color stabilizing agent dissolvine u00ae na2 which is a trademark for a brand of an edta disodium salt and which is manufactured by akzo chemie stationsstraat 48 amersfoort the netherlands are added to a one liter parr autoclave made of carpenter 20 e alloy the autoclave or reactor is communicative through a nitrogen purge line with a one liter 316 stainless steel bomb and the reactor is purged twice with nitrogen the autoclave 39 s contents are heated to 100 u00b0 c and then methyl chloride is added to the reactor until a pressure of 175 psig is attained as the methylation proceeds over the next ninety minutes the reactor pressure builds and it must be relieved occasionally by venting to 200 psig at ninety minutes after the.