title: 2-Nitrophenylhydrazine: a selective reagent for colorimetric determination of carboxylic acid anhydrides and chlorides.
mesh_terms: D000812:Anhydrides / Q000032:analysis*; D002264:Carboxylic Acids / Q000032:analysis*; D055598:Chemical Phenomena; D002621:Chemistry; D002712:Chlorides / Q000032:analysis*; D003124:Colorimetry; D007202:Indicators and Reagents; D009570:Nitriles; D010659:Phenylhydrazines / Q000138:chemical synthesis; D012997:Solvents; D013997:Time Factors
chemical_list: D000812:Anhydrides; D002264:Carboxylic Acids; D002712:Chlorides; D007202:Indicators and Reagents; D009570:Nitriles; D010659:Phenylhydrazines; D012997:Solvents