METALLIC COMPOUNDS 
44 
is slightly dissolved in the concentrated muriatic acid. The 
solution is yellow, and affords a precipitate by the addition of 
water, which is a triple combination of the muriatic and stibic 
acidsand water. Ifthis be briskly heated, there is a disengagement 
of oximuriatic gas, (superoxidum muriatosum) and a white 
oxide remains. If, on the contrary, it be heated slowly, muria- 
tic acid is disengaged, and the acid remains of a yellow colour. 
In some instances it is obtained partly white and partly yellow. 
Sfcibiites 
stibious acid. 
Stibiite of 
potash. 
6. Combinations of the stibious acid with saline bases. Stibiites , 
I fused together the white oxide of antimony and caustic 
potash $ the former in excess. The fused mass treated with 
cold water, produced a weak alkaline solution, and left a white 
powder undissolved. This powder exposed for two hours to 
the action of boiling water was in part dissolved, and the solu- 
tion greatly resembled that of the stibiate of potash. The 
acetic acid, as did also a current of carbonic acid gas, produced a 
white precipitate, which re-acted like an acid upon vegetable 
colours, and when heated over a spirit lamp afforded water, and 
left a white oxide which inclined a little to yellow while still 
hot. I am disposed to think, that this last circumstance was 
owing to the formation of a small quantity of stibic acid, from 
that action of the alkali and the heat, because the pure white 
oxide does not become yellow by heat. I, therefore, consider 
this precipitate as the combination of an acid with water, 
and as this acid has antimonium for its base, though it contains 
less oxigen than that which I have already described, I shail 
call it acidum stibiosum, and the combination with water, stibiis 
hydricus. 
A solution of the neutral stibiite of potash being decomposed 
by nitric acid, produced 4*6 grammes of stibious acid ignited by 
the fire, and 3 ’ 1 6 gr. of nitrate of potash well dried. These 
are equal to 1*4 gr. of pure potash, of which the oxigen is 
0'24S2. The oxigen of 4 - 7 gr* of the stibious acid is JL'025 
and 0 2482 x 4=0 9p2S 5 whence i appears that the stibious 
acid, has the capacity of neutralizing a quantity of base of 
which the oxigen is one-fourth that of the acid. 
The stibiis kalicus'* must therefore be composed of 
Stibious acid - - 76 0 - - 100 00 
Potash - - - - 23 ’4 - - 30’55 
* The calx antimonii data is, in fact, a superstibiis kalicus. 
The 
