40 



HYDRATES IN AQUEOUS SOLUTION. 

 TABLE 14. DISODIUM PHOSPHATE Continued. 



SODIUM AMMONIUM ACID PHOSPHATE. 



The sodium ammonium acid phosphate crystallizes with 4 molecules of 

 water and was, therefore, of interest from our standpoint. It combines 

 with considerable water, especially in the dilute solutions; indeed, with just 

 about the amount that we should expect from its water of crystallization. 

 The phosphates, then, fall in line with the general relation between water 

 of crystallization and lowering of freezing-point. 



TABLE 15. SODIUM AMMONIUM ACID PHOSPHATE. 



