title: Spectrophotometric determination of piperazine with chloranil.
mesh_terms: D002703:Chloranil; D010879:Piperazines / Q000032:analysis*; D011809:Quinones; D013054:Spectrophotometry, Atomic / Q000379:methods
chemical_list: D010879:Piperazines; D011809:Quinones; D002703:Chloranil