JACKSON AND TORREY. AN ORGANIC OXIDE. 155 



nized by its odor. It is easily soluble in methyl c^ ethyl alco- 

 hol ; soluble in acetone, or acetate of ethyl ; slightly soluble in cold 

 benzol, or chloroform, more soluble in either of these solvents when 

 hot; insoluble in ether, ligroin, carbonic disulphide, or water; glacial 

 acetic acid dissolves it, but nothing is precipitated from this solution by 

 the addition of water. All of its solutions show a purple color. The 

 best solvent for it is a mixture of benzol and a little methyl alcohol. 

 Dilute hydrochloric acid, or nitric acid, converts it into a black powder. 

 If a strong acid is used, a red solution is formed, from which water pre- 

 cipitates the black substance. The most convenient way of obtaining 

 this black body is by adding dilute hydrochloric acid to an alcoholic 

 solution of the salt, when it falls as a precipitate. It is the free phenol 

 CGCl2(C5HnNH)OH02, which is described later in this paper. An 

 aqueous solution of sodic hydrate does not dissolve the substance, but, 

 if the alkali is added to an alcoholic solution of the salt, a light colored 

 compound is precipitated, and at the same time the odor of an amine is 

 observed ; heavy white fumes are produced, when hydrochloric acid 

 vapors are brought near the vessel containing this mixture. The pre- 

 cipitate is, therefore, probably the sodium salt, but it was not thought 

 worth while to study it. Baric chloride gives a violet precipitate, argen- 

 tic nitrate a red gelatinous precipitate, when added to an alcoholic solu- 

 tion of the salt. These precipitates were more carefully studied in order 

 to characterize the substance more thoroughly. 



Silver Salt of Dichlorisoamylamidoxyquinone, 

 C6C1.2(C5HiiNH)OAgOo, 2 HoO. 



This salt was prepared by adding to a dilute alcoholic solution of the 

 isoamylamine salt an aqueous solution of argentic nitrate in excess. 

 After stirring the solution for some time a mass of olive-gray needles 

 separated, which were collected on a filter, washed very thoroughly with 

 water, and with a mixture of alcohol and water, sucked dry on the filter 

 pump, and then dried in a desiccator over sulphuric acid to a constant 

 weight. The analysis of the salt gave the following results : — 



0.1387 gram of the salt dried in a desiccator lost 0.0124 gram of water 

 when heated to 105°-110°. 



Calculated for CeClaCCgHnNHJGAgOj, 2 HjO. Found. 



Water 8.58 8.94 



The amount of silver in the salt dried at 105° -110° was determined 



