Delphinidin

Structural formula
Figure without anion (mostly chloride)
General
Surname	Delphinidin
other names	3,3 ', 4', 5,5 ', 7-hexahydroxy-flavylium
Molecular formula	C 15 H 11 O 7 (cation)
Brief description	deep red prisms or needles with metallic sheen (chloride)
External identifiers / databases
CAS number 528-53-0 ( chloride ) EC number 208-437-0 ECHA InfoCard 100.007.671 PubChem 68245 ChemSpider 114185 Wikidata Q367258
properties
Molar mass	303.25 g mol −1 (cation) 338.70 g mol −1 (chloride)
Physical state	firmly
Melting point	> 350 ° C (chloride)
solubility	Easily soluble in ethanol and ethyl acetate (chloride)
safety instructions
GHS labeling of hazardous substances no GHS pictograms H and P phrases H: no H-phrases P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Delphinidin is an anthocyanin dye from red to purple in color.

Occurrence

Delphinidin is found in the flowers of the barnacle spur ( Delphinium consolida ) and the hydrangea ( Hydrangea ). It also occurs in the first blue rose cultivation, Blue Boy. In red fruits, cyanidin usually dominates , but delphinidin in black currants.

It occurs as dimethyl ether in malvidin (red wine).

properties

Delphinidin is a purple flower pigment of the anthocyanin group. The dye is not toxic. It dissolves in acids with a red color, with weak bases delphinidin separates with a purple hue.

Hydrangeas form a blue color from delphinidin in the presence of aluminum or iron salts chelate complexes . To do this, these metal salts must be added to the garden soil using appropriate fertilizers.

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  Blue blooming garden hydrangea

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  Delphinidin-iron complex

Individual evidence

1. ↑ ^{a b c} Entry on anthocyanins. In: Römpp Online . Georg Thieme Verlag, accessed on December 28, 2014.
2. ↑ ^{a b} Data sheet Delphinidin chloride at Sigma-Aldrich , accessed on February 7, 2019 ( PDF ).