It is evident, from what has been stated above, that the following facts must fit any formula proposed for the beta isomer:(1) formaldehyde is one of the products of hydrolysis;(2) four moles of ammonia are formed from one mole of this substance by hydrolysis with alkali;(3) two molecular proportions of iminodiacetic acid result by hydrolysis with acids;(4) interaction of the beta isomer with absolute hydrogen cyanide yields nitrilotriacetonitrile.
![2-[(bis(cyanomethyl)amino)methyl-(cyanomethyl)amino]acetonitrile Structure](https://image.chemsrc.com/caspic/326/1116-43-4.png)