Caustic dej qab zibtuaj yeem tshem tawm cov roj stains, tab sis ceev faj, nws yog corrosive, nws yuav tsum tau npaj rau hauv kev daws, thiab cov hnab looj tes yuav tsum tau siv thaum siv nws.
1. Caustic soda yog sodium hydroxide. Cov roj stains uas peb ntsib hauv peb lub neej yog cov roj fatty acids ntau dua. Ob leeg yuav hnov mob los tsim cov roj fatty acid sodium ntau dua. Cov fatty acid ntau dua sodium dissolves hauv dej thiab tuaj yeem ntxuav nrog dej. Cov roj tuaj yeem ua rau cov tshuaj tiv thaiv hydrolysis nyob rau hauv ib puag ncig alkaline, thiab nws yog ntau tshaj li acidic tej yam kev mob, tab sis caustic soda yog ntau corrosive.
2. Sodium hydroxide tuaj yeem siv los ua alkaline tu tus neeg saib xyuas hauv kev kho dej, soluble hauv ethanol thiab glycerol; insoluble nyob rau hauv propanol thiab ether. Nws disproportionates nrog halogens xws li chlorine, bromine thiab iodine. Neutralizes nrog acids los tsim ntsev thiab dej.
caustic dej qab zibtuaj yeem tshem tau roj
Sodium hydroxide yog ib qho muaj zog corrosive alkali, feem ntau nyob rau hauv daim ntawv ntawm flakes los yog blocks, yooj yim soluble nyob rau hauv dej, thiab yuav siv tau raws li ib tug alkaline tu neeg sawv cev nyob rau hauv kev kho dej.
Cov roj tshuaj muaj pes tsawg leeg yog oleic acid nrog carboxyl COOH tail. Caustic soda thiab soda tshauv tuaj yeem ua rau cov roj hauv qab saponification cov tshuaj tiv thaiv los tsim fatty acid sodium thiab glycerin, uas tuaj yeem yaj hauv dej rau lub hom phiaj ntawm kev tshem cov roj, yog li ua tiav cov txiaj ntsig ntawm decontamination.
Saponification feem ntau yog hais txog cov tshuaj tiv thaiv ntawm lub hauv paus (feem ntau yog lub hauv paus muaj zog) nrog ester los tsim cov cawv thiab carboxylate, tshwj xeeb tshaj yog cov roj thiab lub hauv paus.
Sodium hydroxide yog siv dav hauv kev tsim cov ntawv, xab npum, dyes, rayon, hlau smelting, roj av refining, paj rwb ntaub xov, purification ntawm thee tar khoom, raws li zoo raws li kev ua zaub mov, ntoo ua thiab machinery kev lag luam.
Nws yog cov khoom muaj zog alkaline, muaj zog heev, thiab muaj cov cim "Corrosive".
Kev tiv thaiv
1. Kev tiv thaiv ua pa: Hnav lub npog ntsej muag yog tias tsim nyog.
2. Kev tiv thaiv qhov muag: Hnav tshuaj lom neeg tsom iav. Cov khaub ncaws tiv thaiv: Hnav khaub ncaws ua haujlwm (ua los ntawm cov khoom siv tiv thaiv corrosion). Siv nrog kev saib xyuas, ceev faj kom tsis txhob txaws rau hauv khaub ncaws, qhov ncauj thiab qhov ntswg.
3. Kev tiv thaiv tes: Hnav hnab looj tes roj hmab.
4. Lwm tus: Tom qab ua haujlwm, da dej thiab hloov pauv. Ua tib zoo saib xyuas tus kheej.
