SOME :new salts of cadmium. 15 



2-36 dried in bibulous paper and afterwards ov^r sulphuric acid, lost 



on heating 046 = 1949. 

 The formula Na I + 1 H requires 1944. 



Iodide of cadmium and iodide of sodium were mixed in equal 

 equivalents, and evaporated over sulphuric acid. The double salt 

 separated in long brilliant prisms, which deliquesce very rapidly 

 in a moderately damp atmosphere; they appeared to be four-sided 

 prisms, but owing to their rapid deliquescence their form could not 

 be accurately determined. 



1*0285 grammes dried in bibulous paper gave : — 



Water 04150 = 14-09 



Sulphide of cadmium... 04950 = 14-71 cadmium. 



Iodide of silver 1-2400 = 6514 iodine. 



Sulphate of soda 0-2218 = 6-98 sodium. 



1.4844 grammes gave : — 



Sulphate of soda 0-2783 =s 6-06 sodium. 



These numbers lead to the formula Na I + Cd I 4- 6 H 0. 

 Cal I II 



Na — 1 — 287-20 — 595 — 6-98 - 6-0G 

 Cd — 1 — 696-77 — 1443 — 14-74 

 I — 2 — 3171-14 — 65-65 — 65 14 

 HO- 6 - 675-00 — 13-97 — 14-09 



4830-11 100-00 100-95 

 Gadmio-iodide of Ammonium. — Iodide of ammonium, obtained by 

 digesting iodine with hydrosulphide of ammonium was mixed with 

 iodide of cadmium, in the proportion of equal equivalents ; the solu- 

 tion on evaporation over sulphuric acid to a very small bulk, gave 

 crystals similar in appearance to those of the potassium compound, 

 remaining unchanged in a tolerably dry atmosphere. Heated in a tube 

 it fuses and loses a considerable quantity of water. 

 1.7625 grms. gave 



Sulphide of Cadmium 0.3685 = 16.26 Cadmium. 



Iodide of Silver 2.3775 = 72.66 Iodine. 



These numbers lead to the formula KH> 1 4- Cd 14-2 110. 



Cal 

 NH*— 1— 225.00— 5.21 — 

 Cd - 1- 696.77-16.14 - 16-26 

 I _ 2-3171.14-73.41 - 72-66 

 JJO - 2— 225.00- 5.21 - 



4317.91 100.00 



