368 PROCEEDINGS OP THE AMERICAN ACADEMY 



Baric Benzoylbenzoltrisidphamide, [C„H„(SOoNC-H.O)3]2Ba3 1 2 H^O. 

 — This salt was made by boiling the beozoylbenzoltrisulphamide with 

 a solutiou of baric hydrate, and removing the excess of baric hydrate 

 with carbonic dioxide. The solution was evaporated at last spon- 

 taneously. 



I. 0.3192 grm. of the air-dried salt dried at 100° lost 0.0372 grm. 

 II. 0.3406 grm. at 120° lost 0.0408 grm. 



Calculated for Found. 



[C6H3(S0i,NC.H50)3]2Ba3l2H20. I. H. 



Water 11.53 11.65 11.97 



The air-dried salt loses in vacuo 3.06 per cent, which corresponds 

 to 3i molecules of water (calculated 3.36 per cent). 



I. 0.2820 grm. of the dry salt gave 0.1184 grm. of baric sulphate. 

 II. 0.2998 grm. gave 0.1214 grm. of baric sulphate. 



Calculated for Found. 



[CeHafSOjNCjHsOsljBas. I. II. 



Barium 24.77 24.69 23.80 



It forms a ^thite varnish soluble in water. 



Chloride of Benzorjlhenzoltrisulphamide, CgH3(S02N=CClC^H5)3. 



This substance was made by heating the benzoylbenzoltrisulpharaide 

 with phosphoric pentachloride. Equal weights of the two substances 

 were used, and they were heated in an open test-tube by means of an 

 air-bath at 110°. After one hour the reaction was complete, and the 

 product was purified by washing it with ligroine, and afterward with 

 absolute ether, which converts it from a viscous liquid to a powder. 

 It was dried at 100° and analyzed. 



I. 0.2314 grm. of substance gave, after boiling with a solution of 

 pure sodic carbonate, 0.1514 grm. of argentic chloride. 

 II. 0.2502 grm. of substance gave 0.1614 grm. of argentic chloride. 



Calculated for Found. 



CoH3(SO.,NCClCcH5)3. I. II. 



Chlorine 15.61 16.17 15.95 



Properties. — It forms colorless cubic crystals, which, like the ben- 

 zoyl compound from which they are derived, show no definite melting 

 point ; they begin to decompose at 225°, and become liquid in the 

 neighborhood of 245°, but the melting point may vary as much as 30°. 

 The substance is insoluble in water, benzol, ligroine, and chloroform, 

 somewhat soluble in ether. 



