362 



TABLE 360.— SURFACE TENSION OF LIQUIDS 



Specific 

 Liquid gravity 



Water 1.0 



Mercury 13.595 



Bisulfide of carbon 1.2687 



Chloroform 1.498 



Ethyl alcohol 807 



Olive oil 918 



Turpentine 873 



Petroleum 870 



Hydrochloric acid 1.10 



Hyposulfite of soda solution 1.1248 



Surface tension in dynes per cm 

 of liquid in contact with — 



TABLE 361.— SURFACE TENSION OF LIQUIDS AT SOLIDIFYING POINT 



Tempera- 

 ture of Surface 

 solidifi- tension in 

 cation dynes per 

 Substance °C cm 



Platinum 2000 1691 



Gold 1200 1003 



Zinc 360 877 



Tin 230 599 



Mercury —40 588 



Lead 330 457 



Silver 1000 427 



Bismuth 265 1390 



Potassium 58 371 



Sodium 90 258 



Tempera- 

 ture of Surface 

 solidifi- tension in 

 cation dynes per 

 Substance °C cm 



Antimony 432 249 



Borax 1000 216 



Carbonate of soda . . 1000 210 



Chloride of sodium . 116 



Water 87.9 



Selenium 217 71.8 



Sulfur Ill 42.1 



Phosphorus 43 42.0 



Wax 68 34.1 



TABLE 362.— VAPOR PRESSURE AND RATE OF EVAPORATION 



p = K.T-*e- Ml ™ dynes/cm 2 (Egerton). 

 Zn, Xo=3.28X 10 4 ; K=\.17X 10 14 ; Cd, X„ = 2.77x 10 4 ; K = 5.27 X 10 1 

 Hg, Xo= 1.60 X 10 4 ; K = 3.72 X 10 13 (Knudsen). 



SMITHSONIAN PHYSICAL TABLES 



