Benzoic acid
CAS Nr.: 65-85-0
Lub cev thiab tshuaj muaj zog
Dawb, nrog lub ntsej muag ci los yog koob zoo li cov muaju, tsis muaj ntxhiab lossis me ntsis nrog cov ntxhiab tsw ntawm benzoin lossis benzaldehyde. Nyob ruaj khov, tab sis hygroscopic. Nws muaj ntau yam ntawm cov kab mob bacteriostatic thiab tsuas yog muaj kev cuam tshuam tsis zoo rau cov kab mob uas tsim cov kua qaub.
Toxicological hauv paus
① LD50: nas mob qhov ncauj 1700mg / kg (BW).
② ADI: 0 ~ 5mg / kg (BW) (tag nrho cov nyiaj yog xam los ntawm benzoic acid) (FAO / leej twg, 1994).
③GRAS:FDA-21CFR184. 1021 ib.
Daim ntawv thov
Benzoic acid yog siv los ua ib qho tshuaj preservative, uas nyuaj rau yaj hauv dej. Yog li ntawd, sodium benzoate los yog nws cov poov tshuaj ntsev feem ntau yog siv ncaj qha rau hauv cov txheej txheem aqueous. Nws yuav tsum tau yaj hauv benzoic acid daws tom qab ntxiv rau dej; Los yog siv tom qab yaj nrog me me ntawm 95 feem pua ethanol. Benzoic acid muaj tshuaj lom neeg ruaj khov thiab tsim nyog rau ntau yam kev ua thiab ntau lawm.
Txawm li cas los xij, rau cov kev siv, cov acidity ntawm nruab nrab yuav tsum tau tswj nyob rau hauv cov dej system, ua ke nrog tom qab sterilization thiab lwm yam kev kho mob ntsuas kom ua tiav qhov zoo tshaj plaws ntxiv nyhuv. Cov tshuaj tua kab mob ntawm benzoic acid nyob rau hauv lub xeev molecular yog muaj zog tshaj li nyob rau hauv lub xeev ionic, thiab nws optimum antibacterial acidity yog pH {{0}} 0. Hauv kev ua zaub mov, thaum lub acidity tswj ntawm pH tsawg dua los yog sib npaug rau 4, cov tshuaj tua kab mob tuaj yeem ncav cuag 0.05 feem pua ~ 0.1 feem pua.
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