Process for the preparation of iminodiacetonitrile and...

Details Process for the preparation of iminodiacetonitrile and... Process for the preparation of iminodiacetonitrile and...

C - Chemistry, Metallurgy

07

C

260/523.1, 260/5

C07C 253/30 (2006.01) C07C 227/26 (2006.01) C07C 229/24 (2006.01) C07C 255/25 (2006.01) C07C 255/61 (2006.01)

Patent

CA 2023162

An improved process is provided for produc- ing iminodiacetonitrile by contacting ammonia, formal- dehyde and hydrogen cyanide, or hexamethylenetetramine, formaldehyde and hydrogen cyanide in a reaction medium, the improvement which comprises the further steps of thereafter adjusting the pH of the reaction medium to a pH between about 5.5 and about pH 10 and heating the reaction medium to an elevated temperature for a sufficient time to convert by-products in the reaction medium to iminodiacetonitrile.

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