Qhov sib txawv tseem ceeb ntawm salicylic acid thiab benzoic acid yog salicylic acid muaj -OH pawg ortho rau pawg carboxylic acid, whereas benzoic acid tsis muaj -OH pawg hauv nws lub nplhaib.
Salicylic acid thiab benzoic acid yog cov organic tebchaw. Ob lub tebchaw no muaj cov qauv tshuaj zoo sib xws nrog qhov sib txawv me ntsis. Salicylic acid muaj cov qauv zoo ib yam li benzoic acid tab sis nrog ib pawg ntxiv -OH. Qhov ntawd txhais tau tias; ob qho tib si salicylic acid thiab benzoic acid muaj ib lub nplhaib benzene txuas rau pawg carboxylic, tab sis salicylic acid muaj OH pawg txuas nrog lub nplhaib benzene, uas tsis muaj nyob rau hauv benzoic acid.
YSalicylic Acid yog dab tsi?
Salicylic acid yog cov organic compound uas muaj cov tshuaj formula C 7H6O3 Nws yog ib hom phenolic acid (ib qho tshuaj tsw qab acid). Ntxiv mus, peb tuaj yeem categorize no compound raws li beta hydroxy acid. Qhov ntawd txhais tau tias; nws muaj ib pawg carboxylic thiab ib pawg hydroxyl sib cais los ntawm ob lub carbon atoms. Molar mass yog 138.12 g / mol. Nws zoo nkaus li tsis muaj xim rau dawb crystals. Tsis tas li ntawd, nws yog ib qho tsis muaj ntxhiab tsw nrog lub ntsiab lus melting 158.6 ° C thiab qhov kub ntawm 200 ° C.
Ntxiv mus, qhov sib xyaw no muaj pawg hydroxyl nyob hauv ortho rau pawg carboxyl. Lub npe IUPAC systematic ntawm no compound yog 2-hydroxybenzoic acid. Tsis tas li ntawd, qhov sib xyaw no tsis zoo hauv dej soluble. Thaum xav txog kev tsim khoom, nws biosynthesizes los ntawm phenylalanine (ib qho amino acid). Ntxiv mus, peb tuaj yeem npaj nws los ntawm kev kho sodium phenolate nrog carbon dioxide ntawm kev kub siab thiab kub. Thiab, nws ua rau tsim sodium salicylate.
Daim duab 01: Dawb Willow yog ib qho chaw ntawm Salicylic Acid
Thaum xav txog kev siv salicylic acid, nws yog ib qho tseem ceeb ua tshuaj kom tshem tawm cov txheej txheem ntawm daim tawv nqaij. Nws kuj tseem muaj txiaj ntsig zoo hauv kev kho pob txuv, pob txuv, ringworm, thiab lwm yam. Tsis tas li ntawd, nws yog qhov tseem ceeb hauv kev tsim cov tshuaj sib txawv, xws li tshuaj aspirin. Lwm qhov tseem ceeb tshaj plaws yog siv cov khoom noj khoom haus.
Y Benzoic Acid yog dab tsi?
Benzoic acid yog cov organic compound uas muaj cov tshuaj formula C7H6O2 Nws yog ib qho yooj yim aromatic carboxylic acid. Tsis tas li ntawd, nws zoo nkaus li dawb crystalline khoom, thiab nws tshwm sim nyob rau hauv ntau cov nroj tsuag vim nws tshwm sim raws li ib tug intermediate rau biosynthesis ntawm theem nrab metabolites.
Daim duab 02: Benzoic Acid Crystals
Lub npe ntawm cov khoom sib xyaw no yog los ntawm nws cov qauv, uas muaj lub nplhaib benzene nrog ib pawg carboxylic acid txuas. Nws molar mass yog 122.12 g / mol thiab melting point yog 122 ° C thiab 250 ° C. Tsis tas li ntawd, nws muaj ib tug zoo, qab ntxiag tsw. Rau kev xav tau kev lag luam, peb tuaj yeem tsim cov khoom no los ntawm ib nrab oxidation ntawm toluene nyob rau hauv lub xub ntiag ntawm oxygen.
Thaum xav txog kev siv benzoic acid, nws yog ib qho tseem ceeb hauv kev tsim cov phenol; Nws yog ib qho precursor rau zus tau tej cov plasticizers, ib tug precursor rau zus tau tej cov sodium benzoate, uas yog ib tug muaj txiaj ntsim zaub mov preservative, thiab lwm yam.
Qhov txawv ntawm Salicylic Acid thiab Benzoic Acid yog dab tsi?
Salicylic acid yog cov organic compound uas muaj cov tshuaj formula C 7H6O3 Thaum benzoic acid yog cov organic compound uas muaj cov tshuaj formula C7H6O2Qhov sib txawv tseem ceeb ntawm salicylic acid thiab benzoic acid yog salicylic acid muaj -OH pawg ortho rau pawg carboxylic acid, qhov benzoic acid tsis muaj -OH pawg hauv nws cov qauv.
Ntxiv mus, salicylic acid yog ib qho tseem ceeb ua tshuaj kom tshem tawm cov txheej txheem ntawm daim tawv nqaij, pab kho pob txuv, pob txuv, ringworm, thiab lwm yam, rau kev tsim cov tshuaj aspirin, thiab ua zaub mov noj. Ntawm qhov tod tes, benzoic acid yog qhov tseem ceeb hauv kev tsim cov phenol; Nws yog ib tug precursor rau zus tau tej cov plasticizers, ib tug precursor rau zus tau tej cov sodium benzoate uas yog ib tug muaj txiaj ntsim zaub mov preservative, thiab lwm yam. Yog li, qhov no yog qhov txawv ntawm salicylic acid thiab benzoic acid nyob rau hauv cov nqe lus ntawm lawv siv.
Hauv qab infographic muab kev sib piv ntau ntsig txog qhov sib txawv ntawm salicylic acid thiab benzoic acid.
Summary – Salicylic Acid vs Benzoic Acid
Salicylic acid yog cov organic compound uas muaj cov tshuaj formula C 7H6O3 Thaum Benzoic acid yog cov organic compound uas muaj cov tshuaj formula C7H6O2 Hauv cov ntsiab lus, Qhov sib txawv tseem ceeb ntawm salicylic acid thiab benzoic acid yog tias salicylic acid muaj -OH pawg ortho rau pawg carboxylic acid, whereas benzoic acid tsis muaj -OH pawg hauv nws cov qauv.
