New York Agricultural Experiment Station. 343 



prepared from the crystalline barium salts which have been described 

 previously. 



A portion of the above dried acid dissolved in water and acidified 

 with nitric acid gave no precipitate after warming for some time 

 with ammonium molybdate solution. 



For analysis the preparation was dried first for ten days in vacuum 

 over sulphuric acid at room temperature and then at 78° in vacuum 

 over phosphorus pentoxide to constant weight. The color did not 

 change by drying in vacuum at room temperature but at 78° the 

 color darkened somewhat. 



0.3405 gram subst. gave 0.0919 gram H 2 and 0.1356 gram C0 2 . 



0.1796 gram subst. gave 0.1754 gram Mg9p 2 7 . 



Found: C = 10.86; H = 3.02; P = 27.22 per ct. 



For inosite hexaphosphate, C 6 Hi 8 2 4P 6 = 660. 



Calculated: C = 10.90; H == 2.72; P = 28.18 per ct. 



For phytic acid, C 6 H 24 27 P6 = 714. 



Calculated: C = 10.08; H = 3.36; P = 26.05 per ct. 



