Ntawm cov inorganic phosphorus tebchaw, phosphorous acid occupies ib tug tshwj xeeb txoj hauj lwm nyob rau hauv ntau daim ntawv thov teb vim nws txawv physicochemical zog. Nws cov mis molecular H₃PO₃, embodied nyob rau hauv nws cov qauv thiab cov khoom, tsis tsuas yog txiav txim siab nws cov tshuaj lom neeg tus cwj pwm, tab sis kuj muab ib tug haumxeeb hauv paus rau tus ntoo khaub lig- kev lag luam technologies. Kev nkag siab tob dua ntawm cov yam ntxwv no yuav pab ua kom nws cov txiaj ntsig zoo tshaj plaws hauv kev tsim khoom thiab kev tshawb fawb tshawb fawb.
Ua ntej, phosphorous acid feem ntau yog dawb crystalline los yog hmoov ntawm chav tsev kub thiab siab. Nws yog yooj yim soluble nyob rau hauv dej, thiab cov txheej txheem dissolution yog exothermic, exhibiting siab hydrophilicity. Cov yam ntxwv no tso cai rau nws tawg sai sai hauv cov kua- cov tshuaj tiv thaiv theem thiab tiv tauj rau lwm yam khoom, ua kom luv sib xyaw thiab cov tshuaj tiv thaiv lub sijhawm thiab txhim kho cov txheej txheem ua haujlwm. Nws cov tshuaj aqueous yog acidic tsis muaj zog, thiab tus nqi pH yog tswj tau nrog cov concentration, ua kom cov kua qaub- hloov pauv hauv cov txheej txheem sib txawv.
Los ntawm cov kua qaub- hauv paus foundations, phosphorous acid yog dibasic muaj zog acid. Txawm hais tias nws cov molecule muaj peb hydrogen atoms, tsuas yog ob lub hydroxyl hydrogens tuaj yeem ionize kom tso cov protons. Cov qauv hauv paus ntsiab lus no txiav txim siab nws cov yam ntxwv stoichiometric hauv cov tshuaj tiv thaiv nruab nrab, muab qhov zoo dua hauv cov txheej txheem uas yuav tsum tau tswj xyuas cov kua qaub stoichiometry. Piv nrog rau cov tribasic acids, nws cov acidity yog nruab nrab, tso cai rau nws koom nrog hauv cov txheej txheem hloov pauv hauv proton yam tsis muaj kev cuam tshuam ntau dhau los yog kev cuam tshuam sab nraud.
Tshuaj reactivity yog lwm yam tseem ceeb ntawm phosphorous acid. Lub hauv paus phosphorus atom yog nyob rau hauv +3 oxidation lub xeev, thiab cov molecule muaj P–H thiab P=O ob daim ntawv cog lus. Cov qub endows nws muaj zog txo cov khoom, ua kom nws txo tau siab -valence hlau ions los yog lwm yam oxidizing neeg ua hauj lwm raws li tsim nyog; tom kawg txhim kho cov electrophilicity ntawm lub chaw phosphorus, ua kom muaj kev sib koom tes lossis kev sib txuas ntxiv nrog cov pab pawg uas muaj ib khub ntawm electrons. Cov cuab yeej no ntawm ob qho tib si txo qis thiab kev sib koom tes muaj peev xwm ua rau nws hloov tau yooj yim hauv ntau yam xwm txheej xws li catalysis, synthesis, thiab kho qhov chaw.
Hais txog thermal stability, phosphorous acid dhau lub cev qhuav dej los tsim phosphoric acid thaum rhuab mus rau kwv yees li 180℃lossis siab dua, ua kom pom qhov hloov pauv ntawm nws cov qauv. Cov cuab yeej no tso cai rau kev npaj cov phosphorus tebchaw nrog cov oxidation ntau dua, tab sis kuj qhia tias qhov kub thiab txias yuav tsum tau tswj xyuas thaum lub sijhawm khaws cia, kev thauj mus los, thiab siv los tswj nws cov haujlwm qub.
Los ntawm ib puag ncig thiab kev nyab xeeb, phosphorous acid ua rau muaj kev pheej hmoo ntawm ecological tsawg dua piv rau qee cov phosphates uas muaj tshuaj lom thiab yog biodegradable nyob rau hauv tej yam kev mob, ua rau nws daim ntawv thov nyob rau hauv dej kho mob, kev pab ua liaj ua teb, thiab cov ntaub ntawv ntsuab ua tau.
Nyob rau hauv cov ntsiab lus, phosphorous acid, nrog nws yooj yim solubility, adjustable acidity, dual redox kev ua, thiab structural convertibility, muaj broad adaptability thiab technological zoo nyob rau hauv hlau ua, polymer stabilization, tshwj xeeb tshuaj synthesis, thiab ib puag ncig daim ntaub ntawv, ua rau nws ib tug tseem ceeb functional raw khoom txhawb kev zoo thiab efficiency txhim kho nyob rau hauv ntau yam lag luam.
