Nyob rau hauv cov teb ntawm cov tshuaj zoo thiab cov ntaub ntawv science, phosphorous acid, raws li ib tug tseem ceeb inorganic phosphorus compound, tau dhau los ua ib tug tseem ceeb kev txhawb nqa rau technology breakthroughs nyob rau hauv ntau industries vim nws tshwj xeeb tshuaj qauv thiab reactivity.Its molecular mis yog H₃PO₃. Txawm hais tias nws muaj peb hydrogen atoms, nws yog acidic vim tsuas yog ob pawg hydroxyl (-OH), uas yog ib tug diprotic muaj zog acid. Cov yam ntxwv no ua rau nws irreplaceable nyob rau hauv synthesis, stabilization, thiab catalysis.
Los ntawm kev xav physicochemical, phosphorous acid feem ntau yog dawb crystalline lossis hmoov nyob rau hauv chav tsev kub, yooj yim soluble hauv dej thiab tso cua sov, muaj ob qho tib si txo thiab sib koom tes. Nws cov tshuaj aqueous yog weakly acidic; Cov cua kub siab tshaj 180℃tuaj yeem dehydrate nws los tsim phosphoric acid, thaum nyob rau hauv alkaline tej yam kev mob nws nkag mus rau hauv phosphite. Qhov "hloov tau" tus yam ntxwv no ua rau nws tus choj txuas cov phosphorus sib txawv - cov ntaub ntawv raws li - nws tuaj yeem koom nrog hauv kev tsim cov phosphorus compounds ua ntej, thiab tseem tuaj yeem ua tiav kev ua haujlwm - hloov kho los ntawm kev tswj cov tshuaj tiv thaiv.
Hauv cov ntawv thov kev lag luam, phosphorous acid cov txiaj ntsig tseem ceeb nyob hauv peb qhov xwm txheej tseem ceeb: Ua ntej, ua tus neeg saib xyuas kom muaj txiaj ntsig zoo, nws tau siv dav hauv kev kho hlau saum npoo hauv kev lag luam electroplating, txhim kho txheej txheej thiab corrosion kuj los ntawm kev xaiv txo. Qhov thib ob, nws ua "stabilizer" nyob rau hauv cov khoom siv yas thiab cov khoom siv polymer, tshwj xeeb tshaj yog rau cov kab mob oxidative degradation xws li polyvinyl chloride (PVC) thiab engineering plastics. Phosphorous acid thiab nws cov derivatives tuaj yeem ntes cov dawb radicals zoo, ncua kev laus ntawm cov khoom thiab ncua cov khoom lag luam. Thib peb, raws li cov khoom siv nruab nrab, nws koom nrog hauv kev npaj cov tshuaj tshwj xeeb xws li phosphite esters thiab nplaim hluav taws. Qee cov phosphite esters, vim lawv cov toxicity tsawg thiab siab stability, yog maj mam hloov cov tsoos plasticizers, ua raws li cov qauv ntawm ntsuab manufacturing.
Nws yog ib qho tsim nyog sau cia tias phosphorous acid tus phooj ywg ib puag ncig yog tsav nws daim ntawv thov nthuav dav. Piv nrog rau qee cov tshuaj lom phosphorus tebchaw, nws muaj biodegradability zoo dua, thiab kev tshawb fawb hauv thaj chaw xws li tshuaj tua kab thiab dej kho corrosion inhibitors txuas ntxiv mus, muaj peev xwm muab kev daws teeb meem ntau dua rau kev ua liaj ua teb thiab kev tiv thaiv ib puag ncig.
Tam sim no, nrog rau kev kho dua tshiab ntawm kev lag luam xws li lub zog tshiab thiab cov ntaub ntawv hluav taws xob, cov kev xav tau ntawm cov khoom siv tau dhau los ua nruj dua. Phosphorous acid, nrog rau nws cov "multifunctional thiab controllable" tshuaj muaj zog, yog hloov los ntawm ib tug yooj yim tshuaj raw khoom mus rau ib tug siab - kawg tshuaj tshwj xeeb. Yav tom ntej, nws txoj kev tshawb nrhiav hauv thaj chaw xws li cov khoom siv hluav taws xob tshiab thiab biomedical phosphorus-raws li kev npaj yuav nthuav tawm nws lub peev xwm ntxiv thiab dhau los ua tus tsav tsheb tseem ceeb ntawm kev tsim kho thev naus laus zis hauv kev lag luam ntsig txog.
