218 MURIATES AND CHLORIDES. 



a state of purity. Chloride of aluminum is still 

 unknown. 



Bucholz, in his Beitrage, (IIL 111.) gives us 

 an analysis of this salt. He states its constitu- 

 ents as follows : 



Muriatic acid . . 29*8 



Alumina . . . 30-0 



Water 40-2 



100-0 



Dimuriate. j have never obtained any salt whose constitu- 

 ents approached those given by Bucholz. His 

 salt seems to have been a dimuriate composed of 



1 atom muriatic acid 4-625 or 29-13 



2 atoms alumina . 4-5 - 28-35 

 6 atoms water . 6-75 - 42-52 



15-875 100-00 



For, considering the imperfection of the data 

 which Bucholz employed, the deviations in his 

 analysis, from these numbers, are not greater 

 than might have been expected. What renders 

 the existence of this dimuriate more probable, 

 is, that alumina has the property of uniting in 

 the same way with some other acids. 

 Muriate of 8. Protomuriate of iron. This salt is easily 



iron . / 



formed by dissolving pure iron filings in muriatic 

 acid in a retort, and setting aside the solution : 

 the salt crystallizes spontaneously, and the super- 



