360 SALTS 



soda. Hence, tartrate of cadmium is slightly 

 soluble in water ; probably nearly as soluble as 

 tartrate of manganese. These crystals are taste- 

 less ; 10-225 grains of them heated on the sand 

 bath for about two hours, lost their crystalline 

 form and became white and opaque, and had 

 lost 1-17 grain of their weight. Hence, the 

 constituents of this salt are 



1 atom tar tar ic acid 8 % 25 



1 atom oxide of cadmium 8 



2 atoms water 2-25 



18-5 



citrate, i0 t Citrate of cadmium. Citrate of ammo- 

 nia produces a remarkably bulky gelatinous pre- 

 cipitate in nitrate of cadmium. When 17'34 

 grains of this salt, previously dried in the open 

 air upon blotting paper, were exposed to the 

 heat of the sand bath, they lost H7 grains of 

 their weight : hence, the constituents of this salt 

 are 



1 atom citric acid 7-25 



1 atom oxide of cadmium 8 



2 atoms water 2-25 



17-5 



We see from the preceding details that the 

 greatest quantity of water in any of the salts of 

 cadmium is 4 atoms. One salt of cadmium, the 



