白色粉末。相对密度2.45。微溶于水和稀酸,不溶于醇。150℃分解,由可溶性镁盐与草酸镁铵在水溶液中作用而得。Oxalic acid,magnesium salt(1:1),dihydrate (8CI);Magnesium,[ethanedioato(2-)-kO1,kO2]-,hydrate (1:2);Magnesium,[ethanedioato(2-)-kO1,kO2]-,dihydrate (9CI);Magnesium oxalate (1:1) dihydrate;Ethanedioic acid, magnesium salt, dihydrate;