luteic

[Lat. lute (us)=yellow; Eng. adj. suff.- ic ( Chem.).) (See the compound.) luteic-acid, s. Chem.: A yellow coloring matter extracted from the flowers of Euphorbia cypari ias by means of alcohol. It is a pure yellow, and crystallizes in slender needles or more rarely in six-sided prisms. It has a bitterish, somewhat astringent taste, is very slightly soluble in water, more so in alcohol and ether, and melts at 274°. Like luteoline it yields pro toc a tec huic acid when fused with potash. Its solutions have an acid reaction, and it exhibits generally the characters of an acid.