gallocyanine
noun
gal·lo·cy·a·nine
| \ ˌga(ˌ)lōˈsīəˌnēn, ˌgȯ(-, -nə̇n\
Definition of gallocyanine
: an oxazine dye C15H12N2O5 made from gallic acid and a nitroso derivative of aniline and used in dyeing mordanted wool and cotton bluish violet
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