Benzoic Acid: Ib qho tseem ceeb Organic Acid thiab Preservative
Cov Ntawv Thov Tseem Ceeb
Cov ntawv thov tseem ceeb ntawm benzoic acid suav nrog nws siv ua cov tshuaj preservative, acidifier, tshuaj tsw qab, thiab nruab nrab hauv cov organic synthesis. Hauv kev lag luam zaub mov, benzoic acid yog cov tshuaj preservative uas feem ntau siv uas tuaj yeem tiv thaiv kev loj hlob ntawm cov kab mob me me thiab ntev lub txee lub neej ntawm cov zaub mov. Nws feem ntau ntxiv rau cov dej haus, cov kua ntses, jams, cov khoom pickled, thiab lwm yam zaub mov kom ntseeg tau tias lawv muaj kev nyab xeeb thiab ruaj khov. Piv txwv li, hauv cov dej haus carbonated, benzoic acid tiv thaiv kev loj hlob ntawm cov kab mob thiab pwm, tswj qhov zoo ntawm cov dej haus.
Hauv kev lag luam tshuaj, benzoic acid yog siv los tsim cov tshuaj nruab nrab rau qee cov tshuaj. Nws muab ib pawg carboxyl functional uas tuaj yeem koom nrog cov tshuaj organic synthesis los tsim cov tshuaj tua kab mob, tshuaj tua kab mob antipyretic, thiab lwm yam tshuaj. Tsis tas li ntawd, benzoic acid tuaj yeem siv los tswj pH ntawm cov tshuaj, kom ntseeg tau tias lawv ruaj khov thiab bioavailability. Piv txwv li, hauv qee cov tshuaj tua kab mob sab nraud, benzoic acid ua haujlwm ua cov tshuaj preservative los tiv thaiv cov tshuaj pleev kom tsis txhob puas.
Hauv kev lag luam tshuaj lom neeg, benzoic acid yog ib qho tseem ceeb hauv kev tsim cov organic. Nws tuaj yeem siv los tsim cov benzoic acid esters, xws li benzyl benzoate, uas siv dav hauv kev lag luam tshuaj tsw qab thiab tshuaj pleev ib ce. Benzoic acid kuj tseem tuaj yeem esterified los tsim ethyl benzoate, siv rau hauv kev tsim cov polymers thiab resins. Ntxiv mus, benzoic acid tuaj yeem ua haujlwm ua acidifier hauv kev tsim cov organic, tswj cov pH ntawm cov tshuaj tiv thaiv los txhawb qee yam tshuaj tiv thaiv.
Hauv kev lag luam tshuaj pleev ib ce, benzoic acid yog siv los tswj pH ntawm cov tshuaj pleev ib ce, ua kom ntseeg tau tias cov khoom ruaj khov thiab muaj kev nyab xeeb. Nws kuj tseem tuaj yeem ua lub luag haujlwm ua cov tshuaj tsw qab, muab cov ntxhiab tsw tshwj xeeb rau cov tshuaj pleev ib ce. Piv txwv li, hauv qee cov tshuaj tsw qab thiab cov khoom siv tu tawv nqaij, benzoic acid yog siv los ua cov tshuaj tiv thaiv thiab cov tshuaj tsw qab kom ntev lub txee ntawm cov khoom thiab txhim kho lawv cov ntxhiab tsw.
Benzoic acid yog ib yam tshuaj uas muaj kev nyab xeeb heev, tab sis yuav tsum ceev faj thaum siv thiab khaws cia. Yuav tsum khaws cia rau hauv lub thawv kaw kom tsis txhob muaj dej noo thiab ua rau muaj kuab paug. Yuav tsum hnav cov khoom siv tiv thaiv zoo, xws li hnab looj tes thiab tsom iav thaum tuav kom tsis txhob raug rau daim tawv nqaij thiab qhov muag.
Cov Lus Qhia Tshwj Xeeb
| Lub Npe Khoom | Benzoic Acid | |||||||||
| Cov Qauv Tshuaj | C₇H₆O₂ | |||||||||
| Qhov Hnyav Molecular | 122.12 | |||||||||
| Qhov tsos | Dawb crystalline hmoov | |||||||||
| Qhov Kub Yaj | 122.41°C | |||||||||
| Kub Kub | 249.2°C | |||||||||
| Qhov Ceev | 1.2659 g/cm³ | |||||||||
| CAS TSIS MUAJ | 65 - 85 - 0 | |||||||||
| Tus lej HS | 29163100 | |||||||||
| EINECS TSIS MUAJ | 200 - 618 - 2 | |||||||||
| Daim Ntawv Thov | Cov tshuaj lom neeg, cov tshuaj khaws cia zaub mov, cov tshuaj kho mob, thiab lwm yam. | |||||||||
Daim Ntawv Tswj Xyuas Zoo
| Lub Npe Khoom | Benzoic Acid | ||||||
| YAM KHOOM | Cov Qauv Txuj Ci | COV TXHEEJ TXHEEM KEV NTSUAM XYUAS | |||||
| Cov Ntsiab Lus | ≥99.5% | 99.86% | |||||
| Chaw Smelting | 121-123 ℃ | 122 ℃ | |||||
| Hlau hnyav li Pb | ≤10ppm | ||||||
| AS | ≤2ppm | ||||||
| Cov ntsiab lus ntawm chloride li Cl | ≤0.014% | 0.01% | |||||
| Cov dej ntsiab lus | ≤0.5% | 0.32% | |||||
| Phthalic acid | ≤100ppm | ||||||
| Xaus lus | Txhua yam khoom muaj nyob rau hauv kev ua raws li qhov kev xeem Qib Khoom Noj | ||||||
Hauv kev xaus lus
Hauv kev xaus lus, benzoic acid, ua ib qho tseem ceeb ntawm cov organic acid thiab cov tshuaj tiv thaiv, ua lub luag haujlwm tseem ceeb hauv kev lag luam khoom noj, tshuaj, tshuaj lom neeg, thiab kev lag luam pleev xim. Nws tsis yog tsuas yog txhim kho kev ruaj khov thiab kev nyab xeeb ntawm cov khoom xwb tab sis kuj txhawb nqa kev txhim kho ntawm kev lag luam niaj hnub. Nrog rau kev nce qib ntawm thev naus laus zis thiab kev thov ntau ntxiv rau cov tshuaj siv tau zoo, cov kev cia siab ntawm daim ntawv thov rau benzoic acid yuav dav dua.