to 28% in thc 31s. Tlic bnlniicc of t,lic uiisntiiriitcd contains 28% of propylciic nnd 9% of I)iitylcnc, wliicli can bc ngniii criickcd to givc ctliylciic in fitir yiclds. It is bclicvcd tlint .lo%, of tlie gyro gnscs citii Iw rccovcrctl :is ctliylciic. 15tltylcnc is cstrnctctl froiii tlic iiiist iirc of gtscs by Ir:ict ioiinl cooling iiiitlcr prcssiirc. h i cstiiiiatc of tlic cost of liqiiid etltylciic protliiccd iii t IJs way is snit1 to bc -;(I. 1.0 :tl.*pcr 11). aritilnblc i i i the Uiiitctl States, tlicre is littlc or iioiic protliicctl :it. prcsciit in t liis wiiy in Grciit-13ritniii.
Tlie coiivcrsioii ol ctliylciic into iilcoliol hiis IJccii for some tiiiic cnrrictl out. hy tlic Cic tlc I3ct.liunc nt, its cokc ovcn \vorks i i i tlic Pits-tldhliiis. This process hiis bccii tlcscril)ctl iii L'hiwic c" Itdrtslrie (1!)23, 9, ti61 ; 1!)25, 13, 718). It. slio~ild IIC iiotctl t.Iiitt3 \.lic~~iis nl)iintlriiit c*tliylciie is 'CLn roiictioiis iirc C J I . ~ + II,SO, = c!,lr,.mo,l C21~I~.I-lS0,, 1-11, O = C211~Oll. -1-IL2S0,, Tlic p s is concciit.riitct1 l i n t il it coiitiriiis 20'% of ct liyleiic rind piLssccd untlcr prcssiirc iiitn n iiiistiirc of SO%, of 9f Y) ! " I I,SO,l iriitl 50%, (it Iiyl siilpliiiric ricitl :it 50" C.
!l!lic ct hylsulpliiiric iicitl protliicctl is siipoiiifictl I J ~ R t C i i l i i , tlic ~S C ~! S S iicitl. iinw of 50% st rviigtli, piisscs t o tlic qiitlictic itiiiiiioiiiii p l i i i i t , so tliiit. the cost of rcconccnt riit,iiig it, is cliiiiiiiiitcil. T l i c t iilcohol coiitiriiis 7 4 % of ctlicr ; t.hc yield of pure iilcoliol rccowrctl is of tlic ortlcr of ti tn 10 lit rcs per toil of coirl. Diiriiig tlic ycnr 1929.--30, 12.1s tons were 1)rotliicctl in this \WJ,.
in Aiiierica by tlic C:trbide S; Ciirl)oii Co., wliicli Iiits, Iiowvtr, disclosed iio iiiforiiirit ion rdirtiiig to t.lie process or to tlic ccoiioiiiic rosiilts. It is iiiidcrstood sonic