T)l(ri<lNAHV 111' Till; ACTIVK I'lil Ncn'l.K; 



11 I'LANTS. 



lodo-potassic iodide. 

 Cadmiura-potassic iodide. 

 Biomine water. 



Gold chloride : reduction of gold 

 on ■warminj'. 



Soluble in -0 parts water : miscibk- in all proportions with alcohol, 

 ether, or chloroform. 



Removed by chloroform from an alkaline, but not from a bicarbonate 

 aqueous solution. 



Precipitants : 



.Vlkaline hydrates (but not if 



dilute). 

 [Not bicarbonate,s.] 

 Tannic acid. 



[Not platinum chloride.] 

 Phospho-molybdic acid. 

 Concentrated .sulphuric acid with potassium bichromate, green. 

 (i) METHYL PELLETIERINE A., C,,Hi,NO ; liquid ; B.P. ■Hit' ; hydro- 

 chloride dextro-rotatory ; salts very hygroscopic. 



Soluble in 'lb parts water, and in alcohol, ether, chloroform. 

 Removed by chloroform from alkaline as well as from bicarbonate 

 solutions. 



Precipitated by alkaline hydrates and biearbonates (from strong solu- 

 tions). 



{<•) PSEUDO-PELLETIERINE A., C.iHif.NO+^H.O ; prismatic crystals ; 

 M.P. 4i; (or 4S', Ciamician and Silber) ; B.P. 240 ; slightly volatile even 

 cold, optically inactive, reaction alkaline, odorous. 



Soluble in water, alcohol, chloroform, petroleum ether, and ether (H 

 parts of latter). 



Removed by chloroform from alkaline and from bicarbonate solutions. 

 Precipitants : 



Alkaline hydrates ) (if not too 



„ biearbonates j dilute). 

 Picric acid, yellow needles. 

 Gold chloride. 



Phospho - molybdic acid, pale 

 yellow. 

 Concentrated sulphuric acid and potass, bichromate, intense green. 

 {<!) ISO-PELLETIERtNE A, OsH,:,NO ; liquid : B.P. IHo : optically in- 

 active. 



Solubility as Pelletierine. 



Removed by chloroform from alkaline, but not from bicarbonate solu- 

 tion. 



Precipitated by alkaline hydrates (from strong solutions), but not by 

 biearbonates 



lodo-potassic iodide, pale brown 



needles. 

 Cadmium-potassic iodide. 

 The free alkaloid precipitates 



lime and alumina from their 



salts. 



j 18.-!. PYRUS mains (Apple); lln^uieii' ; also in cherry, peach and 

 pear. The root-bark. ' Isophlorrhizin,' from the leaves of the apple, has 

 been shown by Schiff to be identical with (n;. For Amygdalin, obtained 

 from various species of Pyrus, etc., see Prunus. 



(o) PHLORRHIZIN (;. (Phloridzin, Isophlorrhizin), C„,H,./J,o-1-2H50 

 (Strecker); cryi-tallizes in needles; loses water at KJO', melts lOli' -109", 

 rehardens at VM\ then remelts at KiU' ; loevo-rotatory, [■\'\v.= -.Vi"^ 

 (Boui-liardat) ; neutral reaction ; slightly bitter, then sweet. Acids con- 

 vert slowly into (It) and sugar. 



Soluble in "2,1)00 parts cold water, readily warm, and in all proportions 

 at lull : also in alcohol, wood spirit, glacial acetic acid, and in a mixture 

 of etlier and alcohol, but scarcely in ether alone. 



Reactions : 



Alkaline hydrates dissolve. 



Ammonia dissolves, solution becoming yellow -wied-x^-blue on ex- 

 posure. 



Precipitated bj' basic acetate lead (not by the neutral salt). 



Concentrated sulphuric acid dissolves yellow, changing to red at 

 iJC-GO" C. 



Friihde s reagent, pure blue, lasting for a few minutes. 



(i) PHLORETIN G.-derivaiive (from Phlorrhizin), CjsHuOs (Strecker) ; 

 M.P. LSI) ; sweet taste. Boiling potash gives Phloretic Acid and Phloro- 

 glucin, CsHiiO:,. 



Soluble in alcohol, hot glacial acetic acid, and in wood spirit, hut 

 scarcely in water or ether. 



Alkaline hydrates dissolve. 



Neutral lead acetate precipitates. 



Concentrated sulphuric acid ' tili i. 

 v^-uA„> 1 »• as Phlorrhizin. 



rruhdes solution i 



§ 184. QUASSIA amara, Picraena e.xcel.«a, Simaruba amara ; .S//""- 

 ruliacea: From Brucea (cjuassioides ?) F. Eyken has isolated ' Bruca- 

 marin,' the melting point and solubilities of which coincide exactly with 

 those of Quassiin, but he finds it to be nitrogenous, and to give a violet 

 coloration with concentrated sulphuric acid : it is soluble in alkalies. 



QUASSIIN B. (Picrasmin ?— Massube, Arch. Plum,,., [.{]. 2i, 147, con- 

 siders Picrasmin to be a higher homologue of Quas.siin. Brucamarin (?,, 

 see above), Ci,H,2();, (F. Massube gives C'hiHjbO,,,) : crystallizes in opaque 

 pillars or rectangular plates ; M.P. 215"-"J17 ; dextro-rotatory, neutral 

 reaction, extremely and persistently bitter taste. 



