mandatory

& s. [Lat. mandator i us.] A. As adj .: Containing a mandate, command, precept, or injunction; directory. "He usurped more than a mandatory nomination of the bishop to be consecrated."- Abp . Usher: On Ordination. B. As subst.: The same as MANDATARY (q. v.). măn-děl-a-mide, s. [English mandelic ), and C6H5-CHOH IMG:content-0890.png:[blocks in formation] Obtained by heating to 180° in a sealed tube, a mixture of benzoic aldehyde, hydrogen cyanide, and water. It crystallizes in rhombic or hexagonal tables, soluble in water and boiling alcohol, slightly soluble in ether, and melts at 131°. Heated with baryta water to 186°, it is converted into barium man delate (C8H2O3)2 Ba, which crystallizes in rhombic tables, soluble in water.