Monochloroacetic acid (MCA) (ClCH2CO2H) is a colorless or white crystalline solid, highly hygroscopic, with a sharp odor. It is inflammable and soluble in water and common organic solvents. MCA, an organochlorine compound, is a useful building block in organic synthesis. Synonyms: Chloroacetic acid, Chloroethanoic acid, Monochloroethanoic acid, MCAA, MCA. IUPAC Name: Chloroacetic acid....