W. P. Dexter on the Sulphates of Antimony. 81 
1, 0:5933 of the salt gave 0°3648 SbS,: 
2. 0°6792 of the same preparation gave 04173 SbS,, and 
0-918 B 
3. aagts of another preparation gave 0°3999 SbS,, and 0-0859 
5. 
Calculated. 1. 2. 3. 
SbO, 54°94 52°82 52°78 53°58 
380, 45:06 —. 46°41 46:00 
100-00 99° 19 99°58 
e present case the cause of the discrepancy, will its 
to the 
salt was hydrated acid, and that its water would be represented 
in the analysis by a loss. The loss, then, should correspond 
in amount to the excess of acid obtained ; or, reckoned in 
equivalents as water, should be equal to the aqarteleuts of the 
acid in excess 
The ¢ composition of the salt from the above analyses, taken 
in equivalents, is 
2. 
SbO, bP 3 
SO, 3:22 3:14 
HO (loss) 0-25 0-13 
The earlier analyses Bare. 
Péligot.* 
SbO, “364 50-2 443 
SO, 432 51-9 531 
99°6 102°1 97'4 
Mr. Péigot considers the salt to contain four atoms of acid, 
* composition which requires ry eet to 52:23 SO,, if the 
Me i Tequisite data for calculation are given only for ~~ first of the mtr of 
_ “L Péligot. If there be not a misprint, there is an error 
the ”: e out of the four analyses of the piliteaton of antimony, of phich 
he details are given If from 1-66 of the salt, 222 BaS were obtained, as as stated 
the memoir, = eg 45-9 p. c. of acid, seotent of 619. 
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