APPENDIX 



221 



Dclphinidin Pelargoniu 



C 15 H n O,Cl . 2H 2 O ; half C 27 H 31 15 C1 . 4H 2 O 

 water given off with 

 difficulty 



C 15 H U 5 C1 + 2 glucose 



Pelargonidin Oenm 



C ]5 H U 5 C1.H 2 0; water C 23 H 25 12 



given off with difficulty 



,C1 . 4H 2 O and 

 6H 2 ; becomes almost 

 free from water in desic- 

 cator 



C 17 H 15 7 C1 + 1 glucose 



Platelets or prisms (red- Fine needles (scarlet-red). Platelets or prisms (red- Prisms (brown-red) 

 brown); do not melt M.P. 180 brown) 



Blue-red 



Orange-red; fluorescent Orange-red 



Readily sol. in alcohol Somewhat sol. in water ; Readily sol. in hot water ; Readily sol. in water and 

 and water sol. in methyl and ethyl readily sol. in methyl methyl alcohol ; mod- 



alcohols, less in latter and ethyl alcohols erately sol. hi ethyl 



alcohol 



Violet, then blue Only violet 



Blue (in alcohol); blue- No reaction 

 violet (in dil. alcohol) 



C 15 H 12 8 . 4H 2 O crystal- 

 line 



Readily isomerises 



Violet, then blue 

 No reaction 



C 15 H 12 6 crystalline 



Blue-violet 



No reaction (in water) 



Readily isomerises 



Myrtillidin 

 C 16 H 13 7 C1 . 2H 2 



Paeonin 



Paeonidin 



C 28 H 33 16 C1.5H 2 ; water C 16 H 13 6 C1 . H 2 ; water 

 given off completely in given off in desiccator 

 desiccator 



Needles or prisms (yellow- Needles (red-violet) ; 

 brown) M.P. 165 



Long needles (reddish- 

 brown) 



Brown-red Red, tinged violet 



Considerably sol. in water; V. readily sol in water; Rather readily sol. in 



v. readily sol. in ethyl considerably sol. in water; v. readily sol. 



and methyl alcohols alcohol in alcohol 



Violet, then blue Violet, then blue Violet, then blue 



Blue (in alcohol) ; violet Violet (in alcohol) ; violet- Violet-red (hi alcohol) 

 (on dilution) red (on dilution) 



Rapidly isomerises 



