SODIUM DICHROMATE. 

 TABLE 13. SODIUM BICHROMATE Continued. 



39 



DISODIUM PHOSPHATE. 



Disodium phosphate was an especially interesting salt to study in the 

 present connection, on account of the large amount of water with which 

 it crystallizes. It crystallizes with more water (12 molecules) than any 

 other salt thus far employed in this investigation. It is unfortunate that 

 the salt has such slight solubility in water at the freezing-point of the solu- 

 tions. We were not able to study solutions more concentrated than 0.1 N. 

 The results, however, show conclusively that disodium phosphate has greater 

 power to combine with water than any other substance that we have investi- 

 gated, which is of importance in connection with the relation between water 

 of crystallization and lowering of freezing-point. 



i TABLE 14. DISODIUM PHOSPHATE. 



