THE SYSTEM . I C E T I C ACID--TRIETHYL,IMlN
67
( 2 7 ) SOLLSER, K., .IBR.UIS, I . , .mu CARR,C. W . : J . Gen. Physiol. 26, 7 (1941). (28) SOLLSER, K . , ASD .$SDERM;IS, J . : J . Gen. I'hysiol. 27, 433 (1944). (29) TR.I~-BE;, >f.: ;\rch. ;inat. I'hysiol., p. 87 (1867); Gcsnrnmeltc k~bhaildlurlgc~l, l'tcyer and Muller, Berlin (1899). (80) W I L B R A S ~IT.: T , ,I. Gcii. Physiol. 18, 933 (1035).
THE S ~ ~ S ' l ' l ~LICErJl(' :~I ~ ~ ( ~ I ~ - ~ ~ ~ I l ~ ~ I I ~ ~ , ~ ~ ~ I H . S,VAS KLOOSTEIt
.ISU
IVIKSTOX A . DOUGLAS
1)cpicrlment o j Chcmisir.!/, Rcnssclnei I'olytcchnic I n s l i f u t c , ' f ' i . o , ~ A'L~c /~ Y'oI,/;
Iicceiccd Soucniber 6, IO&
In coiitrnst to the more thuri three thoiisand minimum azeotropes :vhicli h ~ v e l w n recorded in the literittiire, there are only about t:vo hundred and fifty mnsimimi iizeotropes. The hcst linoux of this t,ype are systems having water :1.s one component and r ~ i i inorganic acid (hydrofluoric ncid, hydrochloric acid, hydi,ol,romic acid, hydriodic acid, nitric acid) as the second constituent. Les,s fumi1i:tr :we maximum azeotropes foi-ined f i m i acetic i~cidand organic bases (pyridine, picoline, t i k t hylaminc), first dc ibccl hy Gmtlner (2) in 1S91, working in 1-ictor Jleyer's luhratorg. On the assumption t h a t definite conipoundv \\.ere fornied, Gardnei. ascribed t o one of his azeotropes the formula 4CH3COOI-I. S(C12HB')B h i t admitted that) in t>hevapyr stale, :tt the boiling point of thymol, This **Compound"was completely tlissociat'ed into acetic acid and triethylamine nioleculr,s. Since n o other inl'orination besides the boiling point (162°C.) of' the b'compouiidOwas svailable, it \vas considered worbhwhile to study the boiling point-vapor composition diagram for the acetic acid-trietliylaminc systein at atmospheric pressure. In the coui'se of this investigation it was discovered that the tn-o components are not, miseihle in all proport'ions. In this respect the y s t e m rescmhles t o sonic cistent. the \\ater-hydrochloi.ic acid and the water1iydrol)rornic acid systems, i\,hei-c there is little miscibility on the acid side in spite of the fact that' considerable 1ie:tt evolution and cion t i x t i m occur when one of these acids is added t o ivater. I~XPP;l
