252 CHEMISTRY OF THE PTOMAINS. 



The aurochlorid, CjHj.NHjj.HCl.AuClj, forms gold-yellow mono- 

 clinic prisms, readily soluble in water. 



With picric acid it forms short brown prisms, not very soluble in 

 water. 



Diethylamin, C^HjjN = {C^^)^B., has been obtained by Bock- 

 lisch from pike which were allowed to putrefy for six days in sum- 

 mer ; and by growing a bacillus obtained from poisonous sausages on 

 intestines and on meat-bouillon (Ehrenberg, 1887). 



It is an inflammable liquid which boils at 57.5°, possesses strong 

 basic properties, and is soluble in water. 



The hydrochlorid, (C2Hj)2NH.HCl, crystallizes in needles 

 (Bocklisch) ; in long needles and prisms from absolute alcohol ; in 

 plates from ether-alcohol. These are not deliquescent and are easily 

 soluble in water and in chloroform ; rather difficultly in absolute alco- 

 hol. Heated with sodium hydrate it gives off alkaline vapors. From 

 an alcoholic solution it is precipitated by addition of alcoholic mercuric 

 chlorid. The mercury double salt is difficultly soluble in hot water, 

 from which it recrystallizes on cooling. 



The platinochlorid, [(CjHj)2.]S"H.HCl]2PtCl„ crystallizes in 

 orange-yellow monoclinic crystals which are easily soluble in water. 



The aurochlorid, (C2H„),NH.HCl.AuCl3(Au= 47.71 percent.), 

 forms trimetric crystals (Topsoe), which are (fifficultly soluble (Bock- 

 lisch). It melts at about 165°. 



With picric acid it forms an easily soluble picrate (Lea). 



Triethylamin, CjH^jN = {Cfi^^, was obtained by Brieger 

 (1885) from haddock which were exposed for five days in an open 

 vessel during summer. He obtained it by distilling with potash, 

 after removal of platinum by hydrogen sulphid, the mother-liquor 

 from which neuridin, the base CjHgNj, muscarin, and gadinin had 

 successively crystallized (see gadinin). It has also been found by 

 Bocklisch (1886) in putrid pike, and by Ehrenberg (1887). The 

 latter obtained it from cultures of a bacillus, found in poisonous sau- 

 sage, and grown on meat-bouillon. 



The free base is oily in character and possesses an ammoniacal 

 odor. It is but slightly soluble in water, and boils at 89°— 89.5°. 



The platinochlorid, r(C,H,)3]Sr.HCl]2PtCl, (Pt = 31.84 per 

 cent.), crystallizes in needles, which are readily soluble in water. 



With mercuric chlorid the aqueous solution gives no precipitate. 



With picric acid it yields yellow needles which are but slightly 

 soluble in cold water. 



Propylamin, CjH^.NHj, is isomeric with trimethylamin, and can 

 therefore be easily confounded with that base. There are two pro- 

 pylamins possible represented by the formulse CHj.CHj.CHj.NHj 



