purpurin


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purpurin

[′pər·pyə·rən]
(organic chemistry)
C14H8O5 A compound crystallizing as long orange needles from dilute alcohol solutions; used in the manufacture of dyes, and as a reagent for the detection of boron. Also known as natural red.
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Although purpurin has been used for centuries in textile production to make vivid red, orange and pink dyes, the researchers have found that it can also be used as the basis for a sustainable and eco-friendly alternative to conventional lithium-ion batteries.
Fortunately, biologically based color molecules, like purpurin and its relatives, seem pre-adapted to act as a battery's electrode.
The composition comprises at least one natural dye chosen from orceins, alizarin, purpurin, carminic acid, kermesic acid, purpuroqallin, protocatechaldehyde, indigo, curcumin, spinulosin, apiqenidin, chlorophyllin, sorghum, and cochineal carmine and at least one organic solvent.
The description of the elements of this perfume goes beyond its elements to their etymological roots just as the couple moves "from the scent to the Afghan rug" where they "began to enter its arabesques of indigo / and purpurin flecked with yellow larkspur of the desert.