title: [Replacement of cancerogenic dimethylaminoazobenzol, used for determination of free hydrochloric acid, by a harmless analog].
mesh_terms: D005745:Gastric Acidity Determination / Q000379:methods; D005750:Gastric Juice / Q000032:analysis*; D006801:Humans; D004124:p-Dimethylaminoazobenzene / Q000031:analogs & derivatives*
chemical_list: D004124:p-Dimethylaminoazobenzene
vernacular_title: O zamene kantserogennogo dimetilaminoazobenzola, ispol'zuemogo dlia opredeleniia svobodnoĭ solianoĭ kisloty, bezopasnym