demal

(D)

   an obsolete unit of concentration in chemistry. From 1901 to 1964, the liter was officially defined to be exactly 1.000 028 cubic decimeter. During this period, there was a small difference between measuring concentration in moles per liter and in moles per cubic decimeter. Concentration in moles per liter is called molar, while concentration in moles per cubic decimeter was called demal. This distinction has now disappeared along with the awkward definition of the liter. The former conversion was 1 demal = 1.000 028 molar.