peroxanthin

[Pref. pyrot, and English xanthin.] by the action of alkalies on one of the substances Chem.: A yellow crystalline substance produced contained in crude wood spirit. The residue obtained by heating the spirit with slaked lime is treated with hydrochloric acid, and the insoluble portion is several times digested in boiling alcohol. The last decoctions contain the pyro xanthin. It water, soluble in alcohol and ether, and di olving forms colorle , needle-shaped crystals, insoluble in with deep red color in strong sulphuric acid. Melts at 144°. connective, and Gr. gennað to produce.] pyr-ox-ăn-tho-gěn, s. [Eng. pyroxanth (in); 0 Chem. The constituent in crude wood naphtha which is supposed to yield pyro xanthin by the action of alkalies.