122 PROCEEDINGS OP THE AMERICAN ACADEMY 



The hydrazone, which is a yellow powder as ohtained above, melts 

 with decomposition at 163°; it dissolves rather easily in acetic 

 acid, acetone, and benzine, but very slightly in alcohol and ether. 

 It is insoluble in alkalies, and crystallizes from acetic acid in 

 yellow leaflets. It does not take up water or alcohol again, which 

 shows that in the above described hydrate and alcoholate these 

 could not have been present in the form of crystal water. 



Mesoxanilidehydrate = Dloxymalonic Anilide, 

 C 6 H 5 N<\ cOH 



The crude mesoxanilidehydrate, which is directly obtained from 

 mesoxanilidimidechloride and water, is best purified by dissolv- 

 ing in warm dilute sodic hydrate, reprecipitating with hydro- 

 chloric acid, and recrystallizing from water. It dissolves in 

 boiling water in very slight amount (about one gram in a litre), 

 and on cooling comes out in colorless needles, which do not change 

 in weight on long standing over H 2 S0 4 in vacuum. The crude 

 hydrate can also be purified by recrystallization from warm (50°) 

 alcohol; but in this case there is danger of a partial conversion 

 into the alcoholate (see analysis I.). The pure alcoholate can, 

 however, be completely converted back into the hydrate by dis- 

 solving it in sodic hydroxide, precipitating with acids, and recrys- 

 tallizing from water (see analysis II.). 



I. 0.1683 gram substance, recrystallized from alcohol (50°), and 

 dried over H 2 S0 4 in vacuum, gave 0.3961 gram C0 2 and 

 0.0753 gram H 2 0. 

 II. 0.1565 gram substance, obtained from the alcoholate as above 

 mentioned, gave 0.3604 gram C0 2 and 0.0711 gram H 2 0. 

 0.2508 gram substance gave 21.2 c.c. moist nitrogen at 17° 

 and 763 mm. 



Theory for Found. 



C 1E H, 4 N 2 4 . I. II. 



C 62.93 64.18 62.81 



H 4.89 4.97 5.05 



N 9.79 9.85 



Mesoxanilidehydrate is soluble in benzine and acetic ether; the 

 hot solutions are colored yellow, but in cooling become colorless, 



