Qib Muaj Khoom Siv Sodium Benzoate Tshuaj Pleev Xim

piav qhia luv luv:

Sodium benzoate yog ib yam tshuaj lom neeg tseem ceeb hauv kev lag luam, txhais tau tias yog ntsev sodium ntawm benzoic acid, tsim los rau kev tswj cov kab mob me me zoo. Ua ib qho tshuaj tiv thaiv tseem ceeb, sodium benzoate muab kev tiv thaiv dav dav ntawm cov kab mob, cov kab mob fungi, thiab cov poov xab, ua rau nws yog ib qho khoom tseem ceeb hauv kev ua zaub mov ntau, kev tsim dej haus, thiab kev tsim tshuaj. Cov hmoov dawb crystalline anhydrous no muaj qhov solubility zoo heev (txog li 600g / L ntawm 25 ° C) thiab pH stability hauv acidic matrices (pH 2.5–4.0), ua rau muaj kev sib kis zoo hauv cov khoom lag luam ntau.

Hauv cov ntsiab lus tsim khoom, sodium benzoate kuj ua haujlwm ua tus hloov kho pH thiab tus tiv thaiv xeb hauv qee cov txheej txheem tshuaj lom neeg, nrog rau qhov tsis tshua muaj kev hloov pauv thiab sib xws nrog cov khoom siv sib xws. Tsim los ntawm kev ua kom tsis muaj zog ntawm benzoic acid nrog sodium hydroxide, qib kev lag luam sodium benzoate ua tau raws li cov qauv kev ntshiab nruj (≥99.5%) kom ntseeg tau tias muaj kev ua tau zoo tas li. Rau cov lag luam uas xav tau kev ncua sijhawm ntev lossis kev txo cov kab mob me me, sodium benzoate tseem yog cov khoom xyaw ua haujlwm pheej yig, ua raws li kev cai lij choj.

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Cov Lus Qhia Txog Khoom

Cov Cim Npe Khoom

Kev piav qhia

Pawg	Khoom Vaj Tse	Cov Lus Qhia Tshwj Xeeb
Cov Ntaub Ntawv Tseem Ceeb	Cov Qauv Tshuaj	C₇H₅NaO₂
	Qhov Hnyav Molecular	144.11 g/mol
	Tus lej CAS	532-32-1
	Lub Npe IUPAC	Sodium benzoate
Cov Khoom Siv Lub Cev	Qhov tsos	Dawb anhydrous crystalline hmoov; tsis muaj clump
	Tsw tsw phem	Tsis muaj ntxhiab
	Kev Ruaj Ntseg Thermal	Decomposes ntawm ~ 410 ° C (tsis muaj qhov sib txawv ntawm qhov melting)
	Kev yaj (25 ° C)	≥600 g/L hauv dej; me ntsis soluble hauv ethanol; insoluble hauv ether
	Qhov Ceev (20 ° C)	1.44 g/cm³
	Tus Nqi pH (1% Cov Tshuaj Aqueous)	2.5–4.0
	Qhov Loj ntawm Cov Khoom Me Me (Qib Lag Luam)	80–200 mesh (kho tau)
Cov Khoom Siv Tshuaj	Chav Kawm Tshuaj	Sodium ntsev ntawm benzoic acid (carboxylate compound)
	Kev Ruaj Ntseg	Ruaj khov nyob rau hauv cov xwm txheej cia khoom ib txwm muaj; rhiab heev rau cov chaw alkaline muaj zog
	Kev ua xua	Sib xws nrog feem ntau cov organic / inorganic compounds; tsis txhob siv cov neeg sawv cev oxidizing muaj zog
	Kev Ua Haujlwm Tiv Thaiv	Kev txwv tsis pub muaj cov kab mob bacteria, fungi, thiab yeast ntau yam (zoo tshaj plaws ntawm pH 2.5–4.0)
Cov Lus Qhia Txog Kev Zoo	Kev Huv (Qhuav)	≥99.5% (ua tau raws li GB21703/USP/FCC cov qauv)
	Cov ntsiab lus noo noo	≤0.5%
	Cov Hlau Hnyav (raws li Pb)	≤10 mg/kg
Cov Khoom Cia Khoom	Kev rhiab heev ntawm dej noo	Hygroscopic; yooj yim rau caking yog tias raug rau cov av noo siab
	Qhov Kub Cia Khoom Pom Zoo	15-30 ° C (tsis txhob cia tshav ntuj ncaj qha)
	Lub Sij Hawm Khaws Cia (Tsis Tau Qhib)	24 lub hlis nyob rau hauv cov xwm txheej cia khoom zoo

Sodium Benzoate (CAS 532-32-1) yog ib qho tshuaj lom neeg tseem ceeb uas muaj ntau yam khoom siv thiab yog ib qho tshuaj tiv thaiv tseem ceeb hauv kev tsim khoom niaj hnub no, paub txog nws lub peev xwm tiv thaiv kab mob zoo heev thiab kev sib haum xeeb ntawm cov qauv. Ua ib qho ntsev sodium ruaj khov ntawm benzoic acid, nws ua haujlwm ua tus neeg sawv cev tiv thaiv kev puas tsuaj zoo, ua kom zoo tiv thaiv kev loj hlob ntawm cov kab mob phem thaum tswj cov khoom tseem ceeb ntawm cov khoom lag luam, yog li ua tau raws li cov kev cai zoo thiab kev nyab xeeb thoob plaws ntau yam lag luam.

Siv dav hauv kev lag luam thoob ntiaj teb, nws feem ntau yog siv rau hauv kev tsim khoom noj thiab dej haus (piv txwv li, dej haus uas muaj roj carbonated, nqaij ua tiav, pickles, thiab cov khoom ci), tshuaj (tshuaj kua, tshuaj pleev rau sab nraud, thiab cov tshuaj haus), cov khoom siv tu tus kheej (tshuaj pleev tawv nqaij, tshuaj zawv plaub hau, thiab tshuaj pleev ib ce), nrog rau kev kho dej hauv kev lag luam thiab cov mis tsiaj. Cov ntawv thov no vam khom nws cov haujlwm tiv thaiv thiab pH-regulating kom ntev lub sijhawm txee khoom, txhim kho kev ruaj khov ntawm cov mis, thiab xyuas kom meej tias cov khoom kawg muaj kev nyab xeeb.

Peb cov khoom Sodium Benzoate muaj ntau qib xaiv (khoom noj, tshuaj, thiab qib kev lag luam) kom phim ntau yam kev siv, muaj cov txheej txheem tswj xyuas zoo uas ua kom muaj kev ntshiab siab (≥99.5%) thiab cov hlau hnyav tsawg heev. Peb lav qhov khoom xa tuaj ntau, cov ntaub ntawv tswj hwm tiav (suav nrog MSDS thiab daim ntawv pov thawj thoob ntiaj teb), thiab cov kev daws teeb meem logistics rau kev thauj mus los kom muaj kev nyab xeeb. Tsis tas li ntawd, peb pab neeg tshaj lij muab kev txhawb nqa tus kheej - xws li kev sim sib xws ntawm cov mis thiab kev qhia txog kev siv tshuaj - los pab koj txhim kho kev ua haujlwm zoo thiab xyuas kom ua raws li cov qauv kev nyab xeeb hauv cheeb tsam.

Cov Lus Qhia Txog Xylene

Khoom	Cov Lus Qhia Tshwj Xeeb
Kev ntsuam xyuas ntawm Sodium Benzoate (ntawm qhov qhuav) w /%	99.0–100.5
Poob thaum ziab, w/% ≤	1.5
Kev ntsuam xyuas qhov tseeb ntawm cov tshuaj	Dhau
Acidity los yog alkalinity	Dhau
Sulfate (raws li SO₄) w/% ≤	0.1
Cov tshuaj uas yooj yim oxidized	Dhau

Kev ntim khoom ntawm Xylene

Hauv lub nruas yas.

Kev Khaws Cia: Khaws cia rau hauv qhov chaw txias, qhuav, thiab muaj cua nkag; khaws cia cais ntawm cov kua qaub muaj zog thiab cov neeg sawv cev oxidizing muaj zog.