Molecular Surface-Energy 

 F- in Erg pro cm'. 



1380 

 1350 

 1320 

 1290 

 1260 

 1230 

 1200 

 1170 

 I KG 

 1110 

 1080 



^'^^^y^^^AL^^UiahxJr'^ 



\' 



'jJleJM^^'^i'^^^^'x/e.. 





c^//"^^' 



.len^z(tée: 



80° 90° 100° 110° 120° 130° H0° 150° leo" 170° 180° 190° 200° 210° 220° 230° 

 Fig. 2. 

 III. 



Anisaldazlne : CH^ . C^H^CH -.N.N-.CH. QH^ . OCH3. 



H 



171 



173.5 



174.5 



176.5 



178 



179 



180.5 



185 



195 



204.5 



219 



230.5 



Maximum Pressure H 



m mm. mer- 

 cury of 

 0^ C. 



in Dynes 



0.932 

 0.911 

 0.902 

 0.886 

 865 

 0.845 



0.908 

 0.886 

 0.851 

 0.822 

 0.800 

 0.789 



1242.5 

 1214.0 

 1203.5 

 1181.2 

 1154.8 

 1128.4 



1210.5 

 1181.2 

 1134.5 

 1096.4 

 1067.1 

 1044.7 



Surface- 

 tension X in 

 Erg pro cm2. 



32.1 

 31.4 

 31.1 

 :^0.5 

 29.9 

 29.4 



31.2 

 30.4 

 29.2 



28.3 

 27.4 

 26.8 



Specific 

 gravity d^o 



1.051 

 1.049 

 1.048 

 1.046 

 1.044 

 1.043 



1.035 

 1.031 

 1.023 

 1.015 

 1.002 

 0.993 



Molecular 

 Surface- 

 energy ," in 

 Erg pro cm2. 



1291.2 

 1264.7 

 1253.4 

 1230.8 

 1208.0 

 1188.7 



1267.9 

 1238.6 

 1195.9 

 1165.1 

 1137.8 

 1119.6 



Molecular weight: 268.14. Radius of the Capillary tube: 0.05301 cm. 



Depth: 0.1 mm. 

 The compound was prepared from anisaldehyde and hydrazinesulphate in 

 cold aqueous solution, and repeatedly crystallized from boiling benzene. 

 The beautiful yellow crystals are at 169 'C. transformed into an isotropous 

 liquid, which at 180' C. gets clear and isotropous. The density of the isotro 

 pous liquid was: 1.0313 at 185' C; at 205^ C : 1.0150; at 225' G.: 0.9977. 

 At P C. in general: rf^o = 1.0355—0.0007775 (r— 180 j— 0.00000125 (?— 180°)2. 



For the anisotropous liquid the density at 173' C. was: 1.0486; at 180° C: 

 1.0416; at / C : rf^, =: 1.0516-0.001 (t 170 ). In this case also the tempera- 

 ture coefficient of ." is for the anisotropous liquid exceptionally great : between 

 17P and 176° about: 11.0 Erg, afterwards 15.2 and even 19.3 Erg per degree. 

 For the isotropous liquid it rapidly decreases with rise of temperature : At the 

 transitionpoint : 6.5 Erg, then 4.27 ; 3.25 ; and finally 1.88 and 1.53 Erg per degree. 



