mach rom in

[Eng. ma ( clurin ); chrom ( atic ) (from its many changes in color), and -in ( Chem.). Chem.: C14H10O3H2O. A crystalline compound prepared by boiling a concentrated solution of maclurin with sulphuric acid and zinc, and separating by means of ether. It forms colorle spangles, which, under the microscope appear as tufts or stars of slender needles, soluble in ether, and slightly soluble in water and alcohol. The solution of mach rom in in strong sulphuric acid is at first orange-red, then yellow; after warming or dilution with water it is emerald-green, and, on adding an exce of alkali, is changed to a violet.