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Encyclopedia Britannica - Main :: SAC-SAR |
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SALICIN, SALICINUM, C13H1807 , the bitter
Salicin is prepared from a decoction o the bark by first precipitating the tannin by milk of lime, then evaporating the filtrate to a soft extract, and dissolving out the salicin by alcohol. As met with in commerce it is usually in the form of glossy white scales or needles. It is neutral, odourless, unaltered by exposure to the air, and has a bitter
taste . It is soluble in about 30 parts of water and 8o parts of alcohol at the ordinary temperature, and in 0.7 of boiling water or in 2 parts of boiling alcohol, and more freely in alkaline liquids. It is also soluble in acetic acid without alteration, but is insoluble in chloroform and benzol. From phloridzin it is distinguished by its ammoniacal solution not becoming coloured when exposed to the air. Chemically, it is a glucoside
glucose
glucose
glucoside
Salicin is used in medicine
ordinary dose may go up to forty
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