Usually the liquid component of a magnesia binder system is a solution of magnesium chloride or magnesium sulfate. With respect to waste disposal, an organic magnesium salt is desirable. This work shows that magnesia binders in the system MgO-Mg(CH 3COO) 2-H 2O develop a considerable strength that is lower than that of a sulfatic binder system. A similar setting behavior can be achieved. Further investigations should include other organic salts of magnesium and focus on the hardening mechanism.