TABLE 671.— PROTEIN MOLECULES 213 631 



M , molecular weight ; f/fo, dissymmetry constant ; a, short diameter ; b, long diameter. 



Substance M 



Zein 35000 



Cytochromec C 15600 



Gliadin 26000 



Hordein 27500 



Erythrocruorin (chironimus) 31400 



Serum albumin, urea denatured 67100 



Lactalbumin a 17500 



Erythrocruorin (lampctra) 17100 



Bence-Jones /3 37700 



Myoglobin 17200 



Crotoxin 30000 



Concanavalin B 42000 



Tuberculin protein 32000 



Lactoglobulin 41800 



Pepsin 35500 



Insulin 40900 



Egg albumin 40500 



Hemoglobin (horse) 69000 



Serum albumin (horse) 67100 



Yellow ferment 82800 



Canavalin 113000 



Serum globulin 167000 



Diphtheria toxin 72000 



Antipneumococcus serum globulin (rabbit) . . 157000 



Antipneumococcus serum globulin (man)... 195000 



Concanavalin A 96000 



Erythrocruorin (arc a) 33600 



Bence-Jones a 35000 



Catalase 248000 



Antipneumococcus serum globulin (horse) . . 920000 



Phycoerythrin (scramium) 290000 



Amandin 329000 



Tyroglobulin 628000 



Edestin 309000 



Excelsin 294000 



Urease 483000 



Hemocyanin (palinurus) 446000 



Tobacco mosaic virus 60000000 



Legumin 208000 



213 Neurath, Journ. Aiver. Chem. Soc, vol. 61, p. 1841, 1939. 



TABLE 672.— INFLUENCE OF PARTICLE SIZE UPON SOLUBILITY 2 " 



Size of 

 particles 



Material /i Solubility at 25°C 



2.0 2.085 g per liter * 



.3 2.476 g per liter 



1.8 2.29 mg per liter * 



.1 4.15 mg per liter 



Coarse red powder 50 mg per liter * 



Very fine yellowish powder 150 mg per liter 



CaSO* 

 BaSO« 

 HgO . 



21< Thomas, Arthur W., Colloid chemistry, McGraw-Hill Book Co., 1934. Used by permission of the 

 author. 



* These are the permanent saturated solutions. The more concentrated solutions, obtained from con- 

 tact with the more finely ground particles, slowly revert to the normally saturated solutions and the 

 particles grow to 2 /i in size. 



SMITHSONIAN PHYSICAL TABLES 



