370 BULLETIN OF THE UNIVERSITY" OF WISCONSIN. 



tion. The value thus obtained was 33.2 at 75° C. For the 

 solid compound the value 5.4 was found at 18° C. 



Antimony Pentachloride. — The sample used was E. de Haen's 

 preparation. It was found securely stoppered and hence was 

 not rectified. The value 3.78 was obtained for its D. C. at 

 21.5° C. 



Stajmic chloride. — Kahlbaum's preparation was redistilled. 

 Its boiling-point was 117.5° C. under 750 mm. of pressure. 

 The value found for its D. C. is 3.2 at 22° C. 



Sulphur Mono-chloride. — The sample used for the measure- 

 ments had been prepared in this laboratory by Mr. Harry Eg- 

 gers. It was redistilled and found to boil at 136.2° under 738 

 mm. of pressure. The value 4.8 was found for its D. C. at 22° 

 C. 



Sulphur Trioxide. — A sample of Kahlbaum's sulphur triox- 

 ide was measured in both the solid and liquid states. The value 

 3.56 was obtained for the D. C. of the liquid sample at 21°, 

 and 3.64 for the solid at 19° C. 



Phosphorus Oxy chloride. — The sample used for the measure- 

 ments was prepared according to the method described by Ger- 

 hardt. 1 About 150g of phosphorus pentachloride was mixed 

 with one-half its weight of dry oxalic acid in a retort, and heated 

 gently. The distillate thus obtained was redistilled and found 

 to boil at 105.1° under a pressure of 739.2 mm. The value ob- 

 tained for its D. C. was 13.9 at 22° C. 



Sulphury Ichloride (S0 2 C1 2 ). — This compound was pre- 

 pared by the method of Schulze. 2 A quality of camphor was 

 liquefied by passing dry sulphur dioxide into the containing 

 vessel. Dry chlorine gas was then passed into the liquid and 

 the current of sulphur dioxide was also continued. In the 

 presence of the camphor chlorine and sulphur dioxide unite to 

 form sulphuryl-chloride. After several distillations a product 

 boiling at 68.4° under 740.2 mm. of pressure was obtained. 

 The value 9.15 was found for its D. C. at 22° C. 



1 Ann. Chim. et de Phys. [3] 44, 102. 



2 Jour, prakt. Chem. 23, 351. 



