Sodium sulfite yog cov xim tsis muaj xim monoclinic nrog cov dej zoo solubility; Nws cov tshuaj aqueous yog alkaline. Nws oxidizes ho nyob rau hauv huab cua, nkag efflorescing thiab nws thiaj li hloov mus rau hauv sodium sulfate. Thaum qhov kub thiab txias, sodium sulfite poob nws cov dej ntawm crystallization, thiab cua sov ntxiv tuaj yeem yaj nws mus rau hauv kev sib xyaw ntawm sodium sulfide thiab sodium sulfate. Anhydrous sodium sulfite muaj qhov ceev ntawm 2.633, thiab nws cov oxidation tus nqi qeeb dua piv rau nws daim ntawv hydrated; nws tsis hloov pauv hauv huab cua qhuav.
Sodium sulfite feem ntau yog siv los ua tus neeg sawv cev txo qis, khaws cia, thiab tsim tawm hauv kev tsim cov sodium thiosulfate. Hauv kev lag luam dyeing thiab luam ntawv, nws ua raws li deoxidizer thiab tshuaj dawb, pab txhim kho cov nyhuv scouring thiab fiber ntau zog ntawm paj rwb ntaub. Hauv kev lag luam photosensitive, sodium sulfite yog siv los ua tus tsim tawm los txhawb kev tsim duab. Hauv kev lag luam organic, nws yog ib qho kev txo qis hauv kev tsim cov m-phenylenediamine, 2,5-dichloropyrazolone, anthraquinone-1-sulfonic acid, 1-aminoanthraquinone, thiab sodium aminosalicylate, zoo tiv thaiv oxidation ntawm cov khoom ib nrab.
Sodium sulfite yog siv nyob rau hauv daim ntawv kev lag luam raws li ib tug lignin tshem tawm, nyob rau hauv lub textile kev lag luam raws li ib tug stabilizer rau hluavtaws fibers, thiab nyob rau hauv lub electronics kev lag luam rau manufacturing photoresistors. Nws kuj tseem siv rau hauv kev lag luam kho dej rau kev kho cov dej khib nyiab electroplating thiab dej haus. Nws ntim thiab khaws cia yuav tsum yog airtight kom tiv thaiv kev sib cuag nrog huab cua thiab deterioration vim ya raws. Nws yuav tsum tsis txhob muab khaws cia lossis thauj ua ke nrog cov oxidants, muaj zog acids, los yog muaj teeb meem thiab tshuaj lom.
Sodium sulfite yog tshuaj reactive thiab muaj zog txo tus neeg sawv cev. Nws reacts nrog sulfur dioxide los tsim sodium bisulfite, thiab reacts nrog cov acids muaj zog los tsim cov ntsev sib xws thiab tso tawm sulfur dioxide. Nws cov qauv zoo tau muab faib ua qib kev lag luam thiab qib kev yees duab, ua raws li cov qauv hauv tebchaws GB / T 9005-88 thiab GB / T 10550-89, feem. Sodium sulfite muaj qhov hnyav molecular ntawm 126.04 thiab nws cov qauv qauv yog Na₂SO₃·7H₂O.
Cov txheej txheem ntau lawm ntawm sodium sulfite feem ntau suav nrog sulfur dioxide nqus, neutralization nrog sodium bisulfite, thiab kev npaj ntawm anhydrous sodium sulfite crystals. Nws cov yam ntxwv suav nrog kev ua haujlwm ruaj khov thiab kev ua haujlwm siab desulfurization, feem ntau ncav cuag 97% -98%, uas tsis txo qis txawm tias muaj kev hloov pauv tseem ceeb hauv cov pa tso pa tawm.
Thaum siv sodium sulfite, cov cai tswj kev nyab xeeb yuav tsum tau ua raws. Thaum hluav taws kub, dej thiab ntau yam hluav taws tua hluav taws tuaj yeem siv los tua nws. Sodium sulfite yog hygroscopic thiab yuav tsum tsis txhob khaws cia rau lub sijhawm ntev; Thaum lub sij hawm kev thauj mus los, yuav tsum tau saib xyuas kom tiv thaiv nws los ntawm nag thiab tshav ntuj ncaj qha.
