Benzoic acid yog cov dawb dawb los yog tsis muaj xim tsis muaj koob zoo li cov muaju nrog cov mis C6H5COOH. Nws muaj ntxhiab tsw qab thiab qab ntxiag. Vim nws cov khoom siv ntau yam, benzoic acid pom cov ntawv thov hauv ntau lub lag luam, suav nrog kev khaws zaub mov, tshuaj, thiab tshuaj pleev ib ce.

Benzoic acid thiab nws cov esters muaj nyob hauv ntau hom nroj tsuag thiab tsiaj txhu. Qhov tseem ceeb, ntau cov txiv hmab txiv ntoo muaj cov ntsiab lus tseem ceeb, kwv yees li 0.05%. Cov txiv hmab txiv ntoo siav ntawm ntau hom Vaccinium, xws li cranberry (V. vitis-idaea) thiab bilberry (V. myrtillus), tuaj yeem muaj cov tshuaj dawb benzoic acid li ntawm 0.03% txog 0.13%. Tsis tas li ntawd, txiv apples tsim benzoic acid thaum kis los ntawm fungus Nectria galligena. Cov tshuaj no kuj tau kuaj pom nyob rau hauv lub cev thiab cov leeg nqaij ntawm pob zeb ptarmigan (Lagopus muta), nrog rau hauv cov qog nqaij hlav ntawm cov txiv neej muskoxen (Ovibos moschatus) thiab Asian bull ntxhw (Elephas maximus). Tsis tas li ntawd, cov pos hniav benzoin tuaj yeem muaj txog li 20% benzoic acid thiab 40% ntawm nws cov esters.

Benzoic acid, tau los ntawm cov roj cassia, yog zoo meej rau cov tshuaj pleev ib ce uas yog cov nroj tsuag nkaus xwb.

Kev siv benzoic acid

1. Kev tsim cov phenol suav nrog kev siv benzoic acid. Nws tau tsim tias phenol tuaj yeem muab tau los ntawm benzoic acid los ntawm cov txheej txheem ntawm kev kho cov molten benzoic acid nrog cov roj oxidizing, huab cua zoo, nrog rau qhov kub ntawm qhov kub ntawm 200 ° C txog 250 ° C.

2. Benzoic acid ua haujlwm ua ntej rau benzoyl chloride, uas ua lub luag haujlwm tseem ceeb hauv kev tsim khoom ntawm ntau yam tshuaj, dyes, tshuaj tsw qab, tshuaj tua kab mob, thiab tshuaj. Tsis tas li ntawd, benzoic acid nkag mus rau hauv cov metabolism los tsim benzoate esters, benzoate amides, thioesters ntawm benzoates, thiab benzoic anhydride. Nws yog ib qho tseem ceeb ntawm cov txheej txheem hauv ntau cov ntsiab lus tseem ceeb hauv cov xwm txheej thiab yog qhov tseem ceeb hauv cov tshuaj organic.

3. Ib qho ntawm cov kev siv tseem ceeb ntawm benzoic acid yog ib qho kev khaws cia hauv cov khoom noj khoom haus. Nws nquag siv hauv cov dej haus, cov khoom siv txiv hmab txiv ntoo, thiab cov kua ntsw, uas nws ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv kev loj hlob ntawm pwm, poov xab, thiab qee yam kab mob.

4. Hauv thaj chaw ntawm cov tshuaj, benzoic acid feem ntau ua ke nrog salicylic acid los daws cov kab mob ntawm daim tawv nqaij xws li kis las ko taw, ringworm, thiab jock khaus. Tsis tas li ntawd, nws yog siv rau hauv cov tshuaj pleev ib ce vim nws cov teebmeem keratolytic, uas pab tshem tawm warts, pob kws, thiab calluses. Thaum siv rau lub hom phiaj tshuaj, benzoic acid feem ntau yog siv tshuaj pleev ib ce. Nws muaj nyob rau hauv ntau hom, xws li cream, tshuaj pleev, thiab hmoov. Cov concentration ntawm benzoic acid nyob rau hauv cov khoom no feem ntau yog li ntawm 5% mus rau 10%, feem ntau ua ke nrog ib tug zoo xws li cov concentration ntawm salicylic acid. Rau kev kho kom zoo ntawm cov kab mob ntawm daim tawv nqaij, nws yog ib qho tseem ceeb uas yuav tsum tau ntxuav thiab qhuav qhov chaw cuam tshuam kom huv si ua ntej siv cov txheej nyias nyias ntawm cov tshuaj. Daim ntawv thov feem ntau pom zoo ob mus rau peb zaug hauv ib hnub, thiab ua raws li cov lus qhia ntawm tus kws kho mob yog qhov tseem ceeb rau kev ua tiav cov txiaj ntsig zoo tshaj plaws.

Benzoic acid feem ntau suav hais tias muaj kev nyab xeeb thaum siv kom raug; Txawm li cas los xij, nws yuav ua rau muaj kev phiv rau qee tus neeg. Feem ntau tshaj tawm cov kev mob tshwm sim muaj xws li cov tawv nqaij hauv cheeb tsam xws li liab, khaus, thiab khaus khaus. Cov tsos mob no feem ntau me me thiab ib ntus, txawm tias lawv tuaj yeem tsis xis nyob rau qee tus. Yog tias khaus khaus txuas ntxiv lossis hnyav zuj zus, nws raug nquahu kom tsis txhob siv cov khoom thiab nrhiav kev taw qhia los ntawm tus kws kho mob.

Cov neeg uas paub txog qhov tsis txaus siab rau benzoic acid lossis ib qho ntawm nws cov khoom xyaw yuav tsum tsis txhob siv cov khoom uas muaj cov tshuaj no. Tsis tas li ntawd, nws yog contraindicated rau siv rau ntawm qhov txhab qhib los yog tawg ntawm daim tawv nqaij, raws li cov kua qaub nqus los ntawm cov tawv nqaij puas yuav ua rau lub cev toxicity. Cov tsos mob ntawm cov kab mob toxicity yuav muaj xws li xeev siab, ntuav, tsis xis nyob hauv plab, thiab kiv taub hau, xav tau kev kho mob tam sim ntawd.

Cov poj niam cev xeeb tub thiab pub niam mis raug txhawb kom sab laj nrog lawv tus kws kho mob ua ntej siv cov khoom muaj benzoic acid kom muaj kev nyab xeeb rau lawv tus kheej thiab lawv cov menyuam mos. Txawm hais tias cov pov thawj hais txog qhov cuam tshuam ntawm benzoic acid thaum cev xeeb tub thiab lactation yog txwv, nws yog ib qho tsim nyog yuav tsum tau ceev faj txog qhov tseem ceeb.

Hauv cov ntsiab lus, benzoic acid yog cov khoom muaj txiaj ntsig nrog ntau yam kev siv. Nws lub ntuj tshwm sim, preservative zog, thiab versatility ua rau nws ib tug tseem ceeb tivthaiv nyob rau hauv ntau yam lag luam. Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum siv benzoic acid kom nyab xeeb thiab muaj lub luag haujlwm, ua raws li cov lus pom zoo thiab sab laj nrog tus kws kho mob thaum tsim nyog.