)i\. 



XIl. 



Trichloroacetic Acid : CCI3 . COOH. 



Maximum Pressure H 



m mm. mer- 

 cury of 

 0' C. 



in Dynes 



Surface- 

 tension ■/. in 

 Erg pro cm^. 



Specific 

 gravity d^^ 



Molecular 

 Surface- 

 energy y in 

 Erg pro cm-. 



80.2 

 92 



117.5 

 •136.5 

 '149.2 

 •176.1 

 •196 



0.902 

 0.876 

 0.814 

 0.784 

 0.746 

 0.665 

 0.607 



1202.0 

 1168.6 

 1085.2 

 1045.0 

 994.6 

 886.5 

 809.2 



27.8 

 27.0 

 25.1 

 23.4 

 22.2 

 19.7 

 17.8 



1.575 

 1.556 

 1.515 

 1.484 

 1.465 

 1.415 

 1.378 



613.8 

 601.0 

 568.7 

 537.6 

 514.4 

 467.1 

 429.6 



Molecular weight : 163.40. 



Radius of the Capillary tube: 0.04792 cm.; in the obser- 

 vations marked by *, the radius was: 0.04670 cm. 

 Depth: 0.1 mm. 



Under a pressure of 765 mm. the acid boils at 195.^5 C; under 21 mm. 

 at 107 C. The melting-point was 57°'5 C. 



The specific gravity at 75^ C. was: 1.5829; at 100' C: 1.5451; at 125' C: 

 1.5082; at t° C. ^40 =1.6216-0.001566 (^-50^)— 0.00000072 (? 50 f-. 



The temperature-coefficient of ." originally increases with rise of tempera- 

 ture : between 80' and 92° C: 1.09; between 92' and 117^ C. : 1.27; between 

 117° and 136' C. : 1.63; afterwards it remains fairly constant at 1.82 Erg 

 per degree. 



