Sodium metabisulfite yog cov khoom siv dav siv hauv kev lag luam khoom noj. Nws yog siv nyob rau hauv ntau yam khoom noj xws li nqaij, khoom noj, dej haus, malt dej qab zib, soy sauce, thiab lwm yam., raws li ib tug antioxidant, preservative, thiab bleach. Tsis tas li ntawd, sodium metabisulfite kuj tseem siv tau los ua cov khoom qab zib xws li cov khoom qab zib, cov kaus poom, jams, thiab khaws cia kom lawv lub neej txee thiab saj. Sodium metabisulfite kuj tseem ua lub luag haujlwm tseem ceeb hauv kev lag luam roj catalysts, papermaking kev lag luam bleaches, tshuaj additives, thiab tshuaj additives nyob rau hauv dye thiab textile txheej txheem.
Raws li cov khoom noj khoom haus ntxiv, lub luag haujlwm tseem ceeb ntawm sodium metabisulfite yog siv nws cov tshuaj tua kab mob antioxidant thiab khaws cia. Thaum lub sij hawm ua zaub mov, sodium metabisulfite tuaj yeem cuam tshuam cov tshuaj tiv thaiv oxidation ntawm cov rog, ncua tus nqi ntawm cov zaub mov tsis zoo, thiab yog li ncua lub txee lub neej ntawm cov zaub mov. Lub caij no, sodium metabisulfite tseem tuaj yeem cuam tshuam kev loj hlob ntawm cov kab mob thiab pwm hauv cov zaub mov, tiv thaiv cov zaub mov kom tsis txhob kis kab mob. Qhov no antioxidant thiab antibacterial nyhuv yog tiav los ntawm decomposition ntawm sodium metabisulfite los tsim sulfur dioxide thiab sulfite ions.
Muaj ob txoj hauv kev tsim khoom rau sodium metabisulfite: txoj kev qhuav thiab txoj kev ntub dej:
(1) Txoj kev qhuav. Sib tov dej qab zib tshauv thiab dej hauv ib qho molar piv tusyees, thiab thaum Na2CO3. nH2O yog tsim nyob rau hauv daim ntawv thaiv, muab tso rau hauv lub reactor. Tuav qee qhov sib txawv ntawm cov blocks thiab tom qab ntawd qhia SO2 kom txog thaum cov tshuaj tiv thaiv tiav. Tshem tawm lub thaiv thiab tsoo nws kom tau txais cov khoom tiav.
(2) Txoj kev ntub dej. Ntxiv ib qho nyiaj ntawm cov ntshiab alkali rau cov tshuaj sodium bisulfite los tsim kev ncua ntawm sodium bisulfite, tom qab ntawd qhia SO2 los tsim sodium pyrosulfite crystals, uas yog centrifuged thiab qhuav kom tau cov khoom tiav.
Kev siv tseem ceeb
Siv los tsim kev tuav pov hwm hmoov, sulfamethoxazole, acetaminophen, caprolactam, thiab lwm yam; Siv rau kev ua kom huv ntawm chloroform, phenylpropylsulfone, thiab benzaldehyde. Cov khoom xyaw siv los kho cov neeg sawv cev hauv kev lag luam yees duab; Kev lag luam txuj lom yog siv los tsim vanillin; Siv raws li kev khaws cia hauv kev lag luam brewing; Roj hmab coagulants thiab dechlorinating cov neeg ua haujlwm rau bleached paj rwb ntaub; Organic intermediates; Siv rau kev luam ntawv, dyeing, thiab tawv ua; Siv los ua tus neeg sawv cev txo qis; Siv rau kev kho dej khib nyiab hauv kev lag luam electroplating, roj teb, thiab ua cov ntxhia ua cov neeg ua haujlwm hauv mines; Siv los ua cov tshuaj tua kab mob, tshuaj dawb, thiab xoob tus neeg sawv cev hauv kev ua zaub mov
Lub luag haujlwm tseem ceeb ntawm sodium metabisulfite yog oxidant.
Hauv kev lag luam, nws tsuas yog siv rau kev luam ntawv thiab dyeing, organic synthesis, luam ntawv, tawv ua, tshuaj, thiab lwm yam. Hauv kev ua zaub mov, nws yog siv los ua cov tshuaj tua kab mob, tshuaj dawb, thiab cov neeg ua haujlwm xoob.
Sodium metabisulfite feem ntau yog siv los ua cov tshuaj tua kab mob hauv kev lag luam brewing, thiab hauv kev lag luam textile ua tus neeg sawv cev dechlorinating tom qab paj rwb ntaub bleaching.
Kev ceev faj rau kev siv sodium metabisulfite
Sodium metabisulfite tuaj yeem ua rau muaj kev phom sij rau tib neeg lub raum kev ua haujlwm, thiab thaum mob hnyav, nws tuaj yeem ua rau mob hnyav thiab tuag taus. Cov neeg yuav tsum tau ceev faj txog kev nyab xeeb thaum siv nws.
Cov khoom no muaj cov nyhuv stimulating rau ntawm daim tawv nqaij thiab mucous daim nyias nyias ntawm tib neeg lub cev, uas yuav ua rau cov tsos mob xws li conjunctivitis thiab bronchitis. Cov neeg uas muaj kev fab tshuaj lossis mob hawb pob yuav tsum tsis txhob kov cov khoom no, vim tias kev sib cuag ntawm daim tawv nqaij ncaj qha tuaj yeem ua rau kub hnyiab.
Cov khoom yuav tsum tau muab cia rau hauv qhov chaw txias, qhuav, thiab qhov cua zoo, kom deb ntawm cov nplaim taws, thiab khaws cia rau hauv lub thawv kaw. Nws yuav tsum tau muab cais los ntawm oxidants kom tsis txhob tawg.
Thaum siv, tsom iav kev nyab xeeb, cov khaub ncaws ua haujlwm tshwj xeeb, thiab cov hnab looj tes roj hmab yuav tsum hnav kom tsis txhob muaj kev sib cuag ncaj qha nrog cov khoom.