Qhov no yog cov tshuaj tiv thaiv acid-base uas acetylsalicylic acid reacts nrog lub hauv paus sodium hydroxide los tsim cov ntsev sodium acetylsalicylate thiab dej (acid + base → ntsev + dej).
Yuav ua li cas sodium salicylate ua?
Sodium salicylate yog sodium ntsev ntawm salicylic acid. Nws tuaj yeem npaj tau los ntawm sodium phenolate thiab carbon dioxide nyob rau hauv qhov kub thiab txiasKeeb kwm, nws tau raug tsim los ntawm refluxing methyl salicylate (cov roj caij ntuj no) nrog ntau tshaj ntawm sodium hydroxide.
Acetylsalicylic acid ua li cas?
Cov tshuaj ntawm Aspirin (acetylsalicylic acid) Aspirin yog npaj los ntawm cov tshuaj synthesis los ntawm salicylic acid, los ntawm acetylation nrog acetic anhydride Qhov hnyav molecular ntawm aspirin yog 180.16g / mol. Nws tsis muaj ntxhiab tsw, tsis muaj xim rau dawb crystals lossis crystalline hmoov.
tshuaj aspirin tuaj qhov twg?
History of aspirin
Nws yog los ntawm Spiraea, ib qho tshuaj lom neeg ntawm cov nroj tsuag uas suav nrog cov khoom siv ntuj tsim ntawm cov tshuaj tseem ceeb: salicylic acid. Cov kua qaub no zoo ib yam li cov tshuaj aspirin niaj hnub no, tuaj yeem pom muaj nyob rau hauv jasmine, taum, peas, clover thiab qee cov nyom thiab ntoo.
tsob nroj yog tshuaj aspirin ua los ntawm?
Willow bark tau siv los ua tshuaj rau ntau tshaj 3500 xyoo. Tsis paub txog cov neeg Sumerians thaum ub thiab cov neeg Iyiv uas siv nws, tus neeg sawv cev ntawm cov nplooj ntoo nplooj yog salicin, uas tom qab ntawd yuav tsim lub hauv paus ntawm kev tshawb pom ntawm cov tshuaj aspirin (Fig 1).
