. Journal. on the .Maine, Pat. 11,747, -May 21, 1904. SHE Pat. of 1905 ; this J., 1905. 290.— [m-Tolylsemicarbazide] Plan mac utical < ompound ; Manu-facture of a . H. E. From Farbenfabr. vorm. F. Bayer und Co., Elberfeld, Ger-many. Eng. Pat. 12,440, June 1, 1904. The nitrile of m - tolylhydrazine - carboxvlic acid,( X. obtained by the action of cyanogenbromide on m-tolylhydrazine, is converted into ro-tolyl-semicarbazide by the addition of 1 mol. of water. Thenitrile may be dissolved in ether, and the solution shakenwith seve
. Journal. on the .Maine, Pat. 11,747, -May 21, 1904. SHE Pat. of 1905 ; this J., 1905. 290.— [m-Tolylsemicarbazide] Plan mac utical < ompound ; Manu-facture of a . H. E. From Farbenfabr. vorm. F. Bayer und Co., Elberfeld, Ger-many. Eng. Pat. 12,440, June 1, 1904. The nitrile of m - tolylhydrazine - carboxvlic acid,( X. obtained by the action of cyanogenbromide on m-tolylhydrazine, is converted into ro-tolyl-semicarbazide by the addition of 1 mol. of water. Thenitrile may be dissolved in ether, and the solution shakenwith several portions of dilute hydrochloric acid ; thesemicaibazide is obtained on evaporating the hydrochloricacid i-dracts. (Sec Eng. Pat. 7954 of 1904; this J.,1905, 345).—T. F. B. United .States Patents. E. Methyl Chloridi : Apparatus for Making . M. Douane, Paris. Pat. 777,406, Dec. 13, 1904. Two iron vessels, lead lined, 1 and 2, are bolted togetherto form an autoclave, in which the hvdrochloric acid. 4.»6 JOURNAL OF THE SOCIETY OF CHEMICAL INDUSTRY. [At«um and methyl alcohol are heated. A tube 9 extends irda from the autoclave, ami is dosed bj a plate 10,which carries i mix- It -> - For the introduction of the acid and alcohol,and also for the remoTal of the methyl ohloridi Theauto I 16, which can b heated by hoi water, introduoed through the oock 16. not i \ also be transferred from this vessel into the-pace within tin- autoclave -20. by the jmik- 19. ThUspace i- provided aleo with another water inlet 21, outlet 22. The methyl chloride is run ofl throughtlu> pi|x- 24 to i> receiver, whence i - • lei containing milk of lime, and then to another : thence it passes through two vessels • ontaiisulphuric acid, and lastlv up a column of ookeimpregnatedwith sulphuric aoid. It is then ready for condensationand compression. The -i\ vessels (reoeivers and washers) D placed in a suitableeasing, and con ther to form a Lattery. Dialtgi Carbincls [from Cy
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
