iQisl Charles J. Robinson and J. Howard Mueller 109 



began to form a deposit of fine needles. After standing in the cold 

 for several days, these were filtered out, and recrystallized by the 

 same procedure. About 0.8 gm. of crystals were obtained. These 

 were soluble in water and alcohol, but insoluble in ether and Chloro- 

 form. No sharp melting point could be obtained, the substance 

 gradually melting with decomposition between 187° C. and 200° C. 

 The remaining material was dried for analysis at 100° C. Analytic 

 data : 



0.3207 gm. gave, by Kjeldahl method, NH3 to neutralize 12.84 c.c. n/io H.SO«. 



0.2916 gm. gave 0.0684 gni. MgiPoOr. 



0.1087 gm. gave 0.2224 gm. CO2 and 0.0624 gm. H.O. 



Found: €,55.80%; H, 6.42% ; P, 5-55% ; N, 5.61%. 



Found: by Anderson from the other acid, (C20H55O48P») — 



C, 56.24% ; H, 6.26% ; P, 4-69% ; N, S-88%. 



Calculated: for brucine phosphate, (C23H26N204)3(H3P04)2 — 



C, 59-53% ; H, 6.08% ; P, 446% ; N, 6.04%. 



Obtaining thus a crystalline Compound agreeing closely, both in 

 properties and composition, with that obtained by Anderson from a 

 different acid, we can account for the result only by supposing that 

 the acids were decomposed by heat into some other material, com- 

 mon to both — which could be only phosphoric acid. 



Prcparation of brucine phosphate. An unweighed amount of 

 syrupy phosphoric acid was diluted somewhat with water, brucine 

 added, then alcohol, Chloroform and ether. Almost immediately 

 a deposit of fine needles appeared, which increased in amount on 

 Standing over night. These were filtered out, recrystallized as be- 

 fore, and dried for analysis at 100° C. Their physical properties 

 were identical with the material previously prepared. Analytic 

 data: 



0.5658 gm. gave 0.0872 gm. MgoPiOj. 



0.3400 gm. gave, by Kjeldahl method, NH3 to neutralize 14.97 c.c. n/io H2S0<. 

 0.4198 gm. gave, by Kjeldahl method, NH3 to neutralize 18.25 c.c. n/io HzSO«. 

 0-I550 gm- gave 0.3301 gm. CO2 and 0.0891 gm. H2O. 

 Found: 



C, 59-66%; H, 6.43%; P, 4-53% ; N, 6.18% and 5-8s%. 



Calculated: for brucine phosphate, (C23H28N204)3(H3P04)2 — 

 C, 59-53% ; H, 6.08% ; P, 4.46% ; N, 6.04%. 



It seems probable, therefore, that the substances obtained by 

 Anderson and by us, from the organic-phosphorus acids, is nothing 



