The organic constituents of plants and vegetable substances and their chemical analysis / by G.C. Wittstein ; authorised translation from the German original, enlarged with numerous additions, by Baron Ferd. von Mueller.

  • Georg Christian Wittstein
Date:
1878
Catalogue details

Licence: Public Domain Mark

Credit: The organic constituents of plants and vegetable substances and their chemical analysis / by G.C. Wittstein ; authorised translation from the German original, enlarged with numerous additions, by Baron Ferd. von Mueller. Source: Wellcome Collection.

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    Scillitill. In the fleshy bulVj of Urginia Scilla. Bruise the fresh bulbs, digest with water mixed with some su]j)liuric acid, filter, saturate the filtrate with lime, evaporate, allow to stand cold, remove the sulphate of lime, bring the liquid to dryness, treat with strong alcohol and evapoi-ate the tincture.—Small, white, hard prisms, of a bitter, not acrid taste, insoluble in water and in oils, soluble in 120 parts alcohol. Scoparill=C42 H22 020- Yellow, crystalline pigment of Cytisus scoparius. Boil the herb with water, evaporate the decoction to a small bulk, leave to stand cold for a day, collect the greenish-brown jelly on a cloth, wash with cold water, treat with boiling alcohol, filter and evaporate slowly.—Small, light- yellow crytals, inodorous and tasteless, neutral, slowly soluble in cold water and in alcohol, readily soluble in both when warm; also easily dissoluble in the hydrates and carbonates of alkalies, also in limewater and in solution of baryta, in concentrated acids. It becomes dark green with solution of chloride of lime, is converted into picric acid by nitric acid; is precipitable by acetate and subacetate of lead. Scroplllllarill. Bitter ingredient of Scrophularia aquatica, S. nodosa, and allied species, obtained as yet only in the impure state. Sekicic Acitl=Stearic Acid. SeCalill=TRIMETHYLAMIN. Seiie«'in=Saponin. Sericic Acid = Myristic Acid. Sericiu=:MYRisTiN. [SiC01)il'ill=C32 H12 Oio. Glucosid, found by Peckolt in the- root-bark of Bowdichia virgilioides. Exhaust the powdered bark with absolute ether, distil and treat the residue Avith cold alcohol of 32° B.; dissolve the remaining crystalline mass in boiling alcohol with a little animal charcoal, filter and allow to crystallise.—Con- glomerated needles of bitter, slightly pimgent taste, slightly alka- line, soluble in ether and boiling alcohol, not in water, fusible to a clear liquid, and burning away without residue.] SiuapoleiC Acid^Cgs H35 O3 + HO. The liquid f it-acid of the oils of black and white mustard and of rape; is prepared like oleic acid. Slieal)Utter. Probably from Lucuma Parkii; is greenish- white, fuses at 43°, and consists of about 30% olein and of 70% stearin. SiualbiU = SlNAPIN-SuLPHOCYANIDE.