•^0 Mr, George on Chloride of Titanium. [Jan. 



o;rains of the fluid in a long test tube, I dropped a weighed por- 

 tion of water very gradually ; chlorine was disengaged rapidly, 

 and the temperature of the tube became considerably elevated ; 

 after cooling I found the loss of weight 4 grs. : the solution 

 oave with gallic acid a dark red precipitate. This fluid is the 

 perr.liloriile of titanium, since, by the separation of chlorine, it is 

 converted into the protochloride, which becomes the muriate by 

 solution. 



From the difficulty attendant upon the drying of the salt 

 (whether formed by crystallization in the tube, or by the decom- 

 position of the perchloride), without rendering a part insoluble ; 

 I added water to a solution of muriate of titanium formed by the 

 decomposition of the perchloride by water, and divided the solu- 

 tion into two equal parts; from the one I precipitated the 

 oxide of titanium bv potash; the precipitate when dried weighed 

 7 grains, and from the other 1 precipitated the chlorine by 

 nitrate of silver ; the chloride of silver when dried weighed 

 lo grains, containing chlorine 3*6. Hence the muriate of tita- 

 nium is composed of oxide of titanium 7, muriatic acid (chlorine 

 3*64 -r hydrogen 1 — )3'74. Supposing the muriate to he com- 

 posed of 1 atom muriatic acid and 1 atom oxide of titanium, 

 the oxide is the protoxide resulting from the combination of 

 1 atom of oxygen with 1 atom titanium, and the weight of tita- 

 nium will be 6\-2, it is probable that the true number is 64, as 

 indicated bv the experiments of M. Rose. From this analysis, 

 the composition will be. 



Muriate of Titanium. 



Oxide of titanium 7*00 



Muriatic acid 3"74 



Or as Protochloride. 



Titanium 6'\2 



Chlorine 3-64 



Perchloride Titanium. 



Titanium 6'66 



Chlorine 7-94 



I remain, j^our obedient servant, 



E. S. George. 



