flavine

/fley-vin, -veen/US // ˈfleɪ vɪn, -vin //UK // (ˈfleɪvɪn) //

黄连素,黄嘌呤,黄素,黄酮

Definitions

n.名词 noun

It is usual to add also a small amount of the yellow dyestuff flavine in order to obtain a yellower shade of scarlet.
Flavine is used in small quantity along with cochineal for dyeing scarlet on wool.
Wool is dyed in single bath by boiling with a mixture of Flavine (8%), stannous chloride (4%) and oxalic acid (2%).