. American journal of pharmacy. ted for use in the direct manufacture of chloroform. The Am. Jour. , 1889. Manufacture of Chloroform. 325 process and form of apparatus for most successfully carrying out thischloroform manufacture constitute the subject of U. S. patent, ,992, also issued to G. Runipf, and assigned to Kcessler and Hass-lacher. The patentee first states that in order to get the full yield ofchloroform it is necessary to take a much larger proportion of bleach-ing powder than that given in Watts Dictionary of Chemistry, , page 918, and states that for 58 pou
. American journal of pharmacy. ted for use in the direct manufacture of chloroform. The Am. Jour. , 1889. Manufacture of Chloroform. 325 process and form of apparatus for most successfully carrying out thischloroform manufacture constitute the subject of U. S. patent, ,992, also issued to G. Runipf, and assigned to Kcessler and Hass-lacher. The patentee first states that in order to get the full yield ofchloroform it is necessary to take a much larger proportion of bleach-ing powder than that given in Watts Dictionary of Chemistry, , page 918, and states that for 58 pounds of acetone at least 600pounds of chloride of lime of thirty-five per cent, available chlorineare necessary. The yield will then be from 150 to 180 per cent, of theweight of the acetone employed instead of about 33 per cent. The construction of the still and connections are shown in Fig. still having been filled to a proper height with water, as shownin the cut, the charge of bleaching powder is introduced and the man-. Fig. 3. hole c closed with cement. The agitators having been started bymeans of the revolving shaft b, the acetone, previously diluted, ispumped in gradually at i. As it enters, it rises and reacts with thebleaching powder solution and the chloroform produced distills spon-taneously from the delivery tube d, passes through the condenser eand is collected under water at /. The introduction of the dilutedacetone is to be effected at intervals only, otherwise some acetone willdistill over unchanged, or the reaction will become too violent andmuch frothing ensue. When the delivery of chloroform begins toslacken, steam is gradually introduced to heat up the mixture anddrive over the last portions of the chloroform which remain. Thecontents of the still are then discharged through the outlet h into thedrain. They consist of very dilute calcium acetate solution mixedwith calcium hydrate and calcium chloride. 326 Estimation of Hypophosphites. {Amju™Sarm The r
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