36 Dr. Kane on the Compounds 0/ Ammonia. 



together with one-half of the ammonia, and there remains a fine apple-green 

 powder, resembling verymuch thatfrom the sulphate, and containing the remainder 

 of the ammonia, with all the chlorine and the copper. Thus, 4.064 of the 

 crystals were heated in an oil -bath, until the disengagement of water and ammonia 

 had ceased; the green powder remaining weighed 3.109, or 76.5 per cent. 

 According to theory, the residue C/.CM.NH3 should weigh 76.3 per cent.; 

 0H.NH3 having been expelled. When this body c^.CMNHg is exposed to a higher 

 temperature it is decomposed, sal ammoniac sublimes, and sub-chloride of cop- 

 per remains ; there are likewise azote and ammonia given off. The ammonia is 

 retained by so powerful an affinity, that it cannot be expelled by any temperature, 

 without the substance being totally decomposed. 



The existence of this body was noticed by Graham, as resulting from the 

 absorption of ammonia by chloride of copper at a high temperature. At ordi- 

 nary temperatures chloride of copper absorbs three equivalents of ammonia, of 

 which two are easily expelled, but the third is retained more powerfully, and con- 

 stitutes with the chloride the body just described. We may therefore consider 

 the ammonia-chlorides, formed by water, and by dry ammonia, as corresponding 

 compounds ; thus, 



NH3CMC/-I- NH3. HO. 



NH3 CMc/ 4" NH3 . NH3 ; 



an equivalent of water in the one replacing an equivalent of ammonia in the 

 other, and both, when heated, giving the body NH3.CM.C/, by losing respectively 

 NH3.H0 and 2NH3. 



IV. OF A NEW BASIC CHLORIDE OF COPPER. 



When the body cl. CMNH3 is treated by water it is decomposed ; there is dis- 

 solved the ammonia-chloride of copper just described, and a quantity of sal ammo- 

 niac, and a bluish green powder remains, insoluble in water, and not containing 

 ammonia. When heated it gives off water, and becomes brown ; but exposed to 

 the air, it gradually regains a certain quantity of water. Its analysis was effected 

 as follows : 



A. 1.901 grammes, dried over a spirit-lamp, gave a chocolate brown powder, 

 which weighed 1.522 grammes, corresponding to 80.06 per cent. This 1.522 



