)1( TKINAin- OF TlIK Al TIVK riilNtl I'l.F.: 



Concentrated suliihuvie :ici J, heated to ]fi(l°, as morphine. 

 „ ., ,, with s-ugar, red. 



„ with i)otass. bichromate, olive-green. 

 ,, with nitric acid, gradually blue. 

 Nitre added to the solution in sulphuric acid after ten hours, the 



blue solution becomes cherryred~»-blood-colour->~orauge. 

 Nitric acid alone, yellow. 

 Per-iodic acid, not reduced. 

 Fn'ihde's reagent, dirty green ; indigo colour after twenty-four hours. 



(7(0 CODENINE A., CiaH^iNOj'H.jO ; isomer of Codeine, and formed 

 from it by heating with sulphuric acid and water ; crystallizes in needles. 



(S) THEBAINE A. (Paramoriihine), C,,,H.,iSrO:, (Anderson). Crystallizable 

 (hut not easily) in needles or prisms: M.P. I'.lii"; lajvo-rotatory; alkaline 

 reactidii, sliiiip taste, very poisonous (action tetanic). 



Solubility : 1 in 10 cold alcohol, 1 in GO amyl alcohol, 1 in 18 chloro- 

 form, 1 in 140 cold ether- more readily hot, 1 in '_'0 benzene. Insoluble 

 in water and petroleum ether. 



Precipitants : 



Alkaline hydrates | j^^.^i^ble i„ g^ees.s. 



Ammonia ) 



[No pp. alkaline carbonates.] 



j^Not lead acetate.] 



Tannic acid, yellow : 1 in li.OOO ; soluble in hydrochloric acid. 



Picric acid, yellow amorphous. 



Platinum chloride, 1 in 1,000 (not 1 in 5,000). 



[Palladious chloride, not 1 in 'i.'iO.] 



(iold chloride, yellowish-brown ; 1 in r),000 ; limit 1 in 10,000. 



Potassium ferrocyanide, pp. 1 in oOO ; sol. in excess; the p2i.= 



T,H, Fey. 

 Potassium chroraate, the pp. is T. chromate. 



„ bichromate, gradually at 1 in :1,(IOO ; the jip. is T. 



bichromate. 

 Phospho-molybdic acid, distinct at 1 in 5,000 : extreme limit 1 in 



50,000. 

 lodo-potassic iodide, distinct at 1 in 5,000 : extreme limit 1 in 50,000. 

 Bismuth-potassic iodide, orange ; slight at 1 in 10,000. 

 Cadmium-potassic iodide, distinct at 1 in 10,000 ; not at 1 in 50,000. 

 Zinc-potassic iodide, 1 in 500. 



Mercuric potassio iodide, distinct at 1 in 5,00ii : extreme limit 1 in 



50,000. 

 Mercuric chloride, cloud, then gradual pp. ; not 1 in 250. 

 (,'hlorine water, colourless solution ; reddish-brown with ammonia. 

 Uromine water, pp. distinct at 1 in 5,00o ; extreme limit I in 50,000. 

 Colour tests : 



( Oucentrated sHl|)huric acid, blood-red. 



,, „ „ with nitric acid, red. 



Nitre added to solution in sulphuric acid after ten hours, the yellow 



solutioni~orange^«.yellow. 

 Nitric acid alone, yellow. 

 Concentrated hydrochloric acid, no effect. 

 Fn'ihde's solution, orange ; after twentj'-four hours, nearly colourless. 



(0«l THEBAICINE A., C,„H,|NO:, ; formed together with (Ht) by action 

 of concentrated hydrochloric acid on Tbebaine. Amori)hous, and giving 

 amorphous resinous salts. 



Soluble with difficulty in hot alcohol ; insoluble in water, ether, or 



benzene. 



Reactions : 



Alkaline hydrates, pp. slightly soluble (brown solution). 



Aramiiiiia, insoluble. 

 Colour tests : Concentrated suljihuric acid, blue. 



('oiRcutrated nitric acid, red. 



{'.>!,• THEBENINE A.,C,.,li..,yO-j. For formation see ilVi)- Amorphous. 

 Soluble with difficulty in hot alcohol, not in water, ether, or benzene. 

 Reactions : Alkaline hydrates, soluble ; ammonia, insoluble. 

 Colour test : (concentrated sulphuric acid, blue, becoming colourless 

 on addition of water, colour reappearing with more acid. 



(10) NARCEINE A. (Pseudo-narceine = Narceine, W. Roser), C.,,H..,NOi, 

 or C,.,H,„NO,C0C',;H,,(0CH.,)X00H ; rhombic prismatic needles; 

 M.P. ;i2°, Pelletier (145 , Hesse ; 171", Merck) ; neutral reaction, feebly 

 bitter, hypnotic. 



Soluble slightly in water, with difficulty in cold alcohol (easier hot), very 

 little in amyl alcohol or chloroform, and insoluble in ether, benzene, or 

 petroleum ether. 



Precipitants : 



Alkaline hydrates ; the pp. dissolves in excess more readilv than in 

 water, but is again produced with large quantity of alkali. 



