C 75 ] 



VITRIOLATED COPPER. 



Copper combined -with Vitriolic Acid. 



Synonymous Names, 

 rBlue vitriol. 

 I Blue copperas. 

 VITRIOLATED J Vitriol of Cyprus. 

 COPPER. "S Vitriol of copper. 



J Vitriol of venus. 

 LSulphate of copper. 



Its chryftals are of a beautiful blue colour, 

 of an oblong rhomboidal fhape, the tafte is fty.p- 

 tic, even caufti.c. This is often found in mineral 

 waters, in the neighbourhood of copper mines. 



A. a. It is detected. By adding lime water, 

 when a pale green precipitate will appear, which, 

 upon pouring in more lime water, is rediffolved, 

 the liquor becoming a fapphire blue. 



b. By adding the cauftic volatile alkali, the 

 water alfo becomes of a fapphire blue colour. 

 The volatile alkali uniting with the copper, 

 forms cuprum ammoniacum, which will remain 

 diffolved in the water, unlefs it be evaporated. 



c. But if the mild volatile, mineral, or ve- 

 getable alkali be employed, green clouds will 

 be formed, and in time a precipitate of that co- 

 lour will fall to the bottom. Thefe alkalis unitn 

 with the vitriolic acid, while the copper unites 

 with the fixed air of the. alkalis, forming what is 

 called mountain copper, which is precipitated ; 

 J^ut if much mild volatile alkali be added, it 



L % will 



