| 摘要 |
PURPOSE:To obtain a Karl Fischer's reagent for measuring moisture having no peculiar unpleasant odor, by containing one or more of four kinds of specific amines along with I2 or iodide and SO2. CONSTITUTION:Amine selected from a group of amine represented by formula I (wherein R<1> and R<2> are H, alkyl, alkylene which may form a ring together with adjacent N, pyridyl or pyrrolidyl), amine represented by formula II (wherein R<3> and R<4> are alkyl which may be substituted by H or OH, CnH2nOR, n is 1- 3, R is alkoxyalkyl shown by alkyl and R<3> and R<4> are not together H), amine represented by formula III (wherein R<5>, R<6> and R<7> are H or alkyl) and amine represented by formula IV (wherein R<8>, R<9> and R<10> are H, alkyl, CnH2nCN, herein, n is 1-3, or alkoxycarbonylalkyl and are not together H) is contained along with I2, iodide and SO2 to prepare a one-component or two-component moisture measuring reagent. By this method, a bad odor caused by pyridine as is conventinal is eliminated. |
