ETHYLAMIN. 251 



and in • cultures of a bacillus, isolated from this, grown on liver, 

 intestines, and meat-bouillon. Stadthagen has found it in normal 

 urine ; Kulneff in the feces of a case of gastroptosis. Morner ob- 

 tained it together with cholin and the preceding amins from " fer- 

 mented fish," an article of food consumed in northern Sweden 

 (1896). Emmerling found it in putrefying gluten, also in strepto- 

 coccus decomposition of fibrin together with methylamin and the 

 base CgHjjN (1897). 



Trimethylamin is found in both the mercuric chlorid precipitate 

 and filtrate. It remains in the mother-liquor from which cadaverin, 

 neuridin, and dimethylamin platinochlorids have crystallized. If 

 an aqueous solution of mercuric chlorid is used as the precipitant, 

 the trimethylamin will be found almost entirely in the filtrate, from 

 which it can be obtained after removal of the mercury by evaporat- 

 ing the filtrate to dryness, extracting with alcohol, and treating the 

 solution thus obtained with alcoholic platinum chlorid. 



The free base is a liquid possessing a strong, fish-like odor. Its 

 boiling-point is 9.3°. It is strongly alkaline in reaction and freely 

 soluble in water. 



The hydrochlorid, (CIl3)jN.HCl, is deliquescent and freely soluble 

 in water and alcohol. Heated to 285° it decomposes. With alkalis 

 it gives off the odor of the free base. 



The platinochlorid, [(CH3)3N.HC1] ^PtCl, (Pt = 36.92 per cent.), 

 is soluble in hot water, from which, on cooling, it recrystallizes in 

 orange-red octahedra or needles, which do not lose water when heated 

 at 100°-110° (Bocklisch). 



The aurochlorid, (CH3)3N.B[Cl.AuCl3 (Au = 49.39 per cent.), is 

 easily soluble, and hence can be separated from cholin aurochlorid, 

 which is difficultly soluble. Similarly this base can be separated 

 from ammonia by the use of gold chlorid. The mercurochlorid con- 

 tains two molecules of HgClj (Morner). 



Trimethylamin is not a strong poison, since very large doses of it 

 must be given in order to bring out physiological disturbances. 



Ethylamin, C^Hj.NHj, is formed in putrefying yeast (Hesse, 

 1857) ; in wheat flour (Sullivan, 1858) ; and also in the distillation 

 of beal^sugar residues. 



It is a strongly ammoniacal liquid boiling at 18.7° and is miscible 

 with water in every proportion. Like the other amins, it is com- 

 bustible. It possesses strong basic properties, and is capable of ex- 

 pelling ammonia from its salts in a manner analogous to the action 

 of the fixed alkalis. 



The hydrochlorid, C^Hj.NHj.HCl, forms deliquescent plates, 

 which melt at 76°-80°. It is readily soluble in water and alcohol. 



The platinochlorid, (C2H5.NH2.HCl)2PtCl„ forms orange-yellow 

 rhombohedra (Weltzien), or hexagonal-rhombohedral crystals (Topsoe). 



