CERTAIN ALKALOIDAL PERIODIDES. 



261 



Table III, — Influence of absolute concentration. 

 MORPHINE. 



Number 

 of exper- 

 iment. 



Grams 

 alkaloid. 



Free 

 acidity, 

 grams 

 H2SO4. 



Concentration. 



jq lodme— 



Atoms of 

 iodine 



per mole- 

 cule al- 

 kaloid. 



Initial." 



Final. » 



Added. 



Used up. 



31 

 32 

 33 



0.03971 

 0.03971 

 0.03971 



0.25 

 0.25 

 0.25 



cc. 

 80 

 130 

 280 



cc. 

 100 

 250 

 600 



cc. 



X4.96 

 14.96 

 14.96 



cc. 

 4.12 

 1.65 

 1.53 



2.96 

 1.18 

 1.09 



CODEINE. 



34 



0.3894 



0.25 



80 



100 



14.96 



5.92 



4.55 



35 



0.3894 



0.25 



130 



250 



14.96 



4.73 



3.63 { 



36 



0.3894 



0.25 



280 



600 



14.96 



2.99 



2.29 



HEROIN. 



37 



38 

 1 



0. 05088 

 0. 05088 



0.25 

 0.25 



80 

 130 



100 

 250 



14.96 

 14.96 



6.81 

 5.04 



4.94 

 3.66 



" The figures represent the volume of solution at the moment of precipitation. 

 I" The figures represent the volume of solution after dilution. 



Table IV. — Influence of time of standing. 

 MORPHINE. 



Num- 

 ber of 

 ex- 

 peri- 

 ment. 



Grams 

 alkaloid. 



Free 

 acidity, 

 grams 

 H2SO4. 



Time of standing. 



^ iodine— 

 10 



Atoms of 

 iodine 



per mole- 

 cule of 



alkaloid. 



Added. 



Used up. 



39 

 40 



0. 3971 

 0. 3971 



0.25 

 0.25 



16 to 24 hours 



cc. 

 14.96 



cc. 

 1 fid 



1.17 

 .76 



,S TTiinntpR , , 



14.96 i 1 Ofi 









CODEINE. 



5 minutes 



16 to 24 hours 



72 hours 



0.07788 

 0. 07788 

 0. 07788 



0.25 

 0.25 

 0.25 



25.53 

 24.93 

 24.93 



9.28 

 10.92 

 10.91 



3.56 

 4.19 

 4.19 



