STAS-OTTO METHOD
\stˈɑːzˈɒtə͡ʊ mˈɛθəd], \stˈɑːzˈɒtəʊ mˈɛθəd], \s_t_ˈɑː_z_ˈɒ_t_əʊ m_ˈɛ_θ_ə_d]\
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A method of separating alkaloids and ptomains. The substance is treated with twice its weight of 90 per cent, alcohol and about 20 grains of tartaric or oxalic acid. It is then filtered and evaporated and the residue is dissolved in absolute alcohol. The process of filtering and evaporating is then repeated and the residue dissolved in water alkalinized with sodium bicarbonate, the alkaloid being extracted with ether. [Stas, a Belgian chemist, 1813-1891.]
By Smith Ely Jelliffe
Nearby Words
- starvedly
- starveling
- starving
- starving time
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- Stas-Otto method
- stase
- stash
- stash away
- stash house
- stasibasiphobia