glyceramic

[Eng., ., glycer (in), and amic.) (For def. see etym. and compound.) glyceramic-acid, s. Chem.: Serin. C3H7NO3 Or C2H3(OH) NH2COOH. A monobasic, triatomic, amído-acid, obtained by boiling silk with water and evaporating the filtered solution, adding a quarter of its volume of sulphuric acid, and boiling for twenty-four hours; then it is neutralized with exce of calcium hydrate, the filtrate is evaporated and a little H2SO4 added to neutralize it. Tyros in and calcium sulphate first separate out on evaporation, then serin, and lastly a little leucin. The serin is di olved in 40 parts of cold water, filtered, the filtrate neutralized by ammonia, and the calcium salt is then decomposed by carbon dioxide. It forms monoclinic crystals di olving in 24 parts of water at 20°. It is insoluble in alcohol and in ether. It forms crystalline compounds with acids and with bases.