| 摘要 |
1,130,605. Measurement of molecular weights. METRIMPEX MAGYAR MUSZERIPARI KULKERESKEDELMI VALLALAT. 12 Oct., 1965 [26 Oct., 1964], No. 43249/65. Heading B1X. Apparatus for the determination of the molecular weights of organic compounds comprises receptacle 1 which may be formed as a solid block and has in it at least three cavities, each cavity being adapted to house an open vessel 4a, 4b, 4c and the cavities opening into a common closed space which communicates with a pump via valve 6 operated by wheel 7. In use, solutions of known concentrations of one or more compounds of known molecular weight are placed in two of the vessels, a solution of known concentration of the compound of unknown molceular weight is placed in the third vessel and the receptacle is closed by lid 3 and evacuated by means of the pump. Valve 6 is then closed and the system allowed to stand. The vessels are then reweighed. The method of calculating the results is explained. Examples refer to determination of the molecular weights of benzil and iodineantipyrene. |
