Qhov sib txawv tseem ceeb ntawm salicylic acid thiab acetylsalicylic acid yog tias salicylic acid molecule muaj carboxyl pawg thiab hydroxyl pawg txuas rau lub nplhaib benzene whereas acetylsalicylic acid molecule muaj pawg carboxyl thiab ester pawg txuas nrog benzene. lub nplhaib.
Acetylsalicylic acid yog ib qho derivative ntawm salicylic acid. Nws tsim los ntawm esterification ntawm salicylic acid. Ib yam li ntawd, ob lub tebchaw no muaj kev siv dav hauv tshuaj. Piv txwv li, acetylsalicylic yog qhov peb hu ua "Aspirin".
YSalicylic Acid yog dab tsi?
Salicylic acid yog ib yam tshuaj uas peb siv tau los tshem tawm cov txheej txheem ntawm peb cov tawv nqaij. Cov tshuaj formula ntawm no compound yog C7H6O3, thiab molar mass ntawm no compound yog 138.12 g / mol. Tsis tas li ntawd, nws zoo nkaus li dawb crystalline khoom, uas tsis muaj ntxhiab tsw. Ntxiv mus, lub npe IUPAC yog 2-Hydroxybenzoic acid.
Daim duab 01: Cov qauv tshuaj ntawm Salicylic Acid
Tsis tas li ntawd, lub melting point ntawm salicylic acid yog 158.6 ° C nyob rau hauv kev tswj xyuas, thiab nws undergoes sublimation tshaj 76 ° C. Thaum lub sij hawm sublimation, cov khoom salicylic crystals hloov ncaj qha mus rau hauv nws cov vapor yam tsis tau mus rau theem ua kua. Tsis tas li ntawd, nws decomposes ntawm ib ncig ntawm 200 ° C.
Ntxiv mus, nws muaj feem ntau ntawm nws siv hauv kev kho mob. Yog li, peb tuaj yeem siv nws los kho warts, dandruff, pob txuv thiab lwm yam kab mob ntawm daim tawv nqaij. Raws li qhov no, peb siv nws lub peev xwm los tshem tawm txheej txheej ntawm daim tawv nqaij. Yog li ntawd, qhov sib xyaw no yog ib qho tseem ceeb hauv ntau cov khoom siv tawv nqaij. Piv txwv li, nws yog ib feem ntawm ntau hom tshuaj zawv plaub hau uas peb siv los kho dandruff. Tsis tas li ntawd, cov neeg tsim khoom siv cov khoom sib xyaw no ua cov khoom noj ntxiv thiab.
Acetylsalicylic Acid yog dab tsi?
Acetylsalicylic acid yog ib yam tshuaj uas peb siv los kho qhov mob, ua npaws thiab mob. Lub npe nrov ntawm cov tshuaj no yog Aspirin, cov tshuaj uas peb siv hauv peb lub neej niaj hnub. Cov tshuaj formula ntawm no compound yog C9H8O4,thiab nws molar mass yog 180.15 g. /mol. Lub melting point yog 136 ° C, thiab nws decomposes ntawm ib ncig ntawm 140 ° C.
Yog li ntawd, qhov sib xyaw no ua rau muaj kev puas tsuaj sai hauv kev daws teeb meem ntawm ammonium acetate, carbonates, citrates, hydroxides, alkali hlau, thiab lwm yam. Tsis tas li ntawd, nws ruaj khov hauv huab cua qhuav, tab sis cov huab cua hauv huab cua tuaj yeem ua rau hydrolysis ntawm cov compound. Peb tuaj yeem tsim cov tshuaj aspirin los ntawm esterification ntawm salicylic acid. Nyob ntawd, peb tuaj yeem kho qhov pib sib xyaw nrog acetic anhydride. Tom qab ntawd, pawg hydroxyl ntawm salicylic acid molecules hloov mus rau hauv pawg ester tsim acetylsalicylic acid.
Daim duab 02: Cov Qauv Tshuaj ntawm Acetylsalicylic Acid
Muaj ntau yam tseem ceeb ntawm kev siv tshuaj no. Piv txwv li, yog tias peb noj cov tshuaj no sai tom qab lub plawv nres, nws txo qis kev pheej hmoo ntawm kev tuag. Tsis tas li ntawd, nws yog ib qho tseem ceeb kom txo tau txoj kev pheej hmoo ntawm lub plawv nres yog tias peb noj nws mus ntev. Txawm li cas los xij, muaj qhov tshwm sim tsis zoo; chim plab. Ntxiv mus, qee qhov kev mob tshwm sim muaj xws li mob plab, plab los ntshav, thiab lwm yam.
Qhov txawv ntawm Salicylic Acid thiab Acetylsalicylic Acid yog dab tsi?
Ob qho tib si salicylic acid thiab acetylsalicylic acid yog pab tau raws li cov tshuaj. Qhov sib txawv tseem ceeb ntawm salicylic acid thiab acetylsalicylic acid yog tias salicylic acid molecule muaj ib pawg carboxyl thiab hydroxyl pawg txuas rau lub nplhaib benzene thaum lub acetylsalicylic acid molecule muaj pawg carboxyl thiab ester pawg txuas nrog lub nplhaib benzene. Ntxiv mus, muaj qee qhov sib txawv thiab. Raws li lwm qhov sib txawv tseem ceeb ntawm salicylic acid thiab acetylsalicylic acid, peb tuaj yeem hais lawv cov ntawv thov. Qhov ntawd yog; peb siv salicylic acid los kho warts, dandruff, pob txuv thiab lwm yam kab mob ntawm daim tawv nqaij thaum peb siv acetylsalicylic acid los kho mob, kub taub hau thiab mob.
Summary – Salicylic Acid vs Acetylsalicylic Acid
Qhov sib txawv loj ntawm salicylic acid thiab acetylsalicylic acid nyob ntawm lawv cov qauv tshuaj. Qhov ntawd yog; Qhov sib txawv tseem ceeb ntawm salicylic acid thiab acetylsalicylic acid yog tias salicylic acid molecule muaj ib pawg carboxyl thiab hydroxyl pawg txuas rau lub nplhaib benzene whereas acetylsalicylic acid molecule muaj pawg carboxyl thiab pawg ester txuas nrog lub nplhaib benzene.
