Bis (dimethyZaminomethy2) acetic acid dihydrochloride. To 50.5 g.(0.5 mole) of malonic acid was added, with cooling and efficient stirring, 150 g.(1.0 mole) of 30% aqueous dimethylamine. After the acid was completely dissolved, 75 g.(1 mole) of 37% formalin wit^