7 
trichloride, which latter, however, can be removed by wash- 
ing with either carbon disulphide or ether. Antimony 
determinations in two different preparations gave 
(1) 75-45 % Sb. (2) 75-88 %Sb; corresponding chlorine 
determinations gave (1) 12-43 % Cl; (2) 12-49 % Cl. 
Hence we have : — 
Calculated for 
Calculated for 
Found 
lOSbiClgOs+SbCls 
Sb 4 ci.A 
Antimony... 
75-57 
.... 76-37 ... 
Chlorine .. 
12-34 
11-11 ... 
.... 12-46 
Oxygen ... 
12-09 
By acting upon 15 parts by weight of antimony trichlo- 
ride with one part of trioxide in a sealed tube Schneider 
(Pogg. Ann. cviii. 407) obtains a crystalline oxychloride to 
which he assigns the formula 7SbCl 3 SbOCl. Repeating 
Schneider’s experiments I obtained a pearl grey crystalline 
mass melting at 72° C, the melting point of the trichloride. 
When acted upon by absolute alcohol it yields powder of 
algaroth SbiCLOg, and its composition appears to be even 
more complicated than that assigned to it by Schneider. 
Antimony determinations in two specimens gave (1) 
54 - 24 %Sb; (2) 54-16 % Sb; whilst the corresponding 
chlorine estimations were (1) 45*69 ; (2) 45"87 instead of 
55- 08 °/ Q Sb and 44-02 °/ Q Cl required by Schnider’s formula, 
but agreeing with the formula Sb 16 Cl 46 0, which requires 
54-2 °/ Q of antimony and 45 - 357 of chlorine. 
The differences here found between the substances as 
prepared by Schneider and myself may arise from the ad- 
mixture of antimony trioxide with the oxychloride in the 
former preparation. When the tube in which the substance 
has been prepared is placed in an upright position and 
allowed to cool, the undissolved oxide sinks to the bottom 
of the tube, but on still further cooling when the contents 
of the tube are about to solidify the oxide rises from the 
