Benzoic acid yog ib qho dawb dawb los yog tsis muaj xim zoo li koob siv lead ua ke nrog cov mis C6H5COOH. Nws muaj ntxhiab tsw qab thiab qab. Vim nws muaj ntau yam khoom siv, benzoic acid pom muaj nyob rau hauv ntau yam lag luam, suav nrog kev khaws cia zaub mov, tshuaj, thiab tshuaj pleev ib ce.

Benzoic acid thiab nws cov esters muaj nyob rau hauv ntau hom nroj tsuag thiab tsiaj txhu. Qhov tseem ceeb, ntau cov txiv hmab txiv ntoo muaj cov concentration 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 qib benzoic acid dawb xws li ntawm 0.03% txog 0.13%. Tsis tas li ntawd, txiv apples tsim cov benzoic acid thaum kis tus kab mob los ntawm fungus Nectria galligena. Cov tshuaj no kuj tau pom nyob rau hauv cov kab mob sab hauv thiab cov leeg ntawm lub pob zeb ptarmigan (Lagopus muta), nrog rau hauv cov qog 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, uas tau los ntawm cov roj cassia, zoo meej rau cov tshuaj pleev ib ce uas yog cov nroj tsuag xwb.

Daim Ntawv Thov ntawm Benzoic Acid

1. Kev tsim cov phenol suav nrog kev siv cov benzoic acid. Nws tau tsim kom muaj phenol los ntawm benzoic acid los ntawm cov txheej txheem ntawm kev kho cov benzoic acid uas yaj nrog cov roj oxidizing, zoo dua yog cua, nrog rau cov pa dej ntawm qhov kub ntawm 200 ° C txog 250 ° C.

2. Benzoic acid ua haujlwm ua tus ua ntej rau benzoyl chloride, uas ua lub luag haujlwm tseem ceeb hauv kev tsim ntau yam tshuaj lom neeg, xim, tshuaj tsw qab, tshuaj tua kab, thiab tshuaj. Tsis tas li ntawd, benzoic acid dhau los ua cov metabolism los ua benzoate esters, benzoate amides, thioesters ntawm benzoates, thiab benzoic anhydride. Nws yog ib qho tseem ceeb hauv ntau cov tshuaj tseem ceeb uas pom muaj nyob rau hauv xwm thiab tseem ceeb hauv cov tshuaj organic.

3. Ib qho ntawm cov kev siv tseem ceeb ntawm benzoic acid yog ua ib qho tshuaj preservative hauv cov khoom noj. Nws feem ntau siv rau hauv cov dej haus, cov khoom txiv hmab txiv ntoo, thiab cov kua ntses, qhov twg nws ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv kev loj hlob ntawm cov pwm, cov poov xab, thiab qee cov kab mob.

4. Hauv kev lag luam tshuaj, benzoic acid feem ntau yog siv nrog salicylic acid los kho cov kab mob fungal ntawm daim tawv nqaij xws li tus neeg ncaws pob ko taw, mob pob khaus, thiab mob pob qij txha. Tsis tas li ntawd, nws siv rau hauv cov tshuaj pleev ib ce vim nws cov teebmeem keratolytic, uas pab tshem tawm cov pob khaus, pob kws, thiab pob txha. Thaum siv rau kev kho mob, benzoic acid feem ntau yog siv rau sab nraud. Nws muaj ntau hom, suav nrog cov tshuaj pleev, tshuaj pleev, thiab hmoov. Qhov concentration ntawm benzoic acid hauv cov khoom no feem ntau yog li ntawm 5% txog 10%, feem ntau ua ke nrog qhov concentration zoo sib xws ntawm salicylic acid. Rau kev kho mob zoo ntawm cov kab mob fungal ntawm daim tawv nqaij, nws yog ib qho tseem ceeb kom ntxuav thiab ziab qhov chaw raug mob kom huv si ua ntej siv cov tshuaj nyias nyias. Feem ntau pom zoo kom siv ob mus rau peb zaug hauv ib hnub, thiab ua raws li kev qhia ntawm tus kws kho mob yog qhov tseem ceeb rau kev ua tiav cov txiaj ntsig zoo tshaj plaws.

Feem ntau cov benzoic acid suav 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. Cov kev phiv uas feem ntau tshaj tawm suav nrog cov tawv nqaij tsis haum xws li liab, khaus, thiab khaus. Cov tsos mob no feem ntau tsis hnyav thiab ib ntus xwb, txawm hais tias lawv tuaj yeem ua rau qee tus tsis xis nyob. Yog tias kev khaus tseem txuas ntxiv lossis hnyav zuj zus, nws yog ib qho zoo kom tsum tsis txhob siv cov khoom no thiab nrhiav kev qhia los ntawm tus kws kho mob.

Cov neeg uas paub tias muaj kev tsis haum tshuaj 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 kev siv rau ntawm qhov txhab qhib lossis daim tawv nqaij tawg, vim tias cov kua qaub nqus los ntawm daim tawv nqaij puas tsuaj yuav ua rau muaj kev lom rau lub cev. Cov tsos mob ntawm kev lom rau lub cev yuav suav nrog xeev siab, ntuav, mob plab, thiab kiv taub hau, uas yuav tsum tau 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 uas muaj benzoic acid kom ntseeg tau tias muaj kev nyab xeeb rau lawv tus kheej thiab lawv cov menyuam mos. Txawm hais tias cov pov thawj txog cov teebmeem ntawm benzoic acid thaum cev xeeb tub thiab pub niam mis muaj tsawg, nws yeej ib txwm yog qhov zoo kom ceev faj.

Hauv kev xaus lus, benzoic acid yog ib qho tshuaj muaj nqis nrog ntau yam kev siv. Nws qhov tshwm sim ntuj, cov khoom tiv thaiv, thiab kev hloov pauv ua rau nws yog ib qho khoom muaj nqis hauv ntau yam lag luam. Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum siv benzoic acid kom muaj kev nyab xeeb thiab muaj lub luag haujlwm, ua raws li cov lus qhia pom zoo thiab sab laj nrog tus kws kho mob thaum tsim nyog.