Phosphorous Acid, ib qho inorganic compound nrog cov tshuaj formula H3PO3.Nws yog cov hmoov dawb crystalline hmoov, yooj yim soluble hauv dej thiab ethanol, thiab maj mam oxidized rau hauv orthophosphate hauv huab cua.Phosphite yog dibasic acid, nws cov acidity yog me ntsis muaj zog tshaj phosphoric acid, nws muaj zog txo cov cuab yeej, yooj yim los txo cov nyiaj ions (Ag +) rau nyiaj hlau (Ag), yuav txo tau sulfuric acid rau sulfur dioxide.Nws muaj zog hygroscopicity thiab deliviousness, thiab corrosive.Phosphite feem ntau yog siv los txo tus neeg sawv cev, nylon brightening tus neeg sawv cev, tab sis kuj siv los ua phosphite raw cov ntaub ntawv, tshuaj tua kab intermediates thiab organic phosphorus dej kho cov ntaub ntawv raw cov ntaub ntawv.
Khoom:dawb crystalline hmoov.Soluble nyob rau hauv dej thiab cawv.Density: 1.651g/cm3melting point: 73 ℃, boiling point: 200 ℃.
APPLICATION:
1.Phosphorous acidyog siv los tsim cov chiv phosphate ntsev xws li poov tshuaj phosphite, ammonium phosphite thiab calcium phosphite.Nws nquag koom nrog hauv kev npaj phosphites xws li aminotris (methylenephosphonic acid) (ATMP), 1-hydroxyethane 1,1-diphosphonic acid (HEDP) thiab 2-phosphonobutane-1,2,4-tricarboxylic Acid (PBTC), uas pom daim ntawv thov nyob rau hauv kev kho dej raws li teev los yog corrosive inhibitor.Nws kuj yog siv nyob rau hauv cov tshuaj tiv thaiv raws li ib tug txo tus neeg sawv cev.Nws cov ntsev, txhuas phosphite yog siv los ua PVC stabilizer.Nws kuj yog siv los ua ib qho precursor hauv kev npaj ntawm phosphine thiab ua ib qho nruab nrab hauv kev npaj ntawm lwm cov phosphorus compounds.
2.Phosphorous acid(H3PO3, orthophosphorous acid) tuaj yeem siv los ua ib qho ntawm cov tshuaj tiv thaiv rau kev sib txuas ntawm cov hauv qab no:
α-aminomethylphosphonic acids ntawm Mannich-Type Multicomponent Reaction
1-aminoalkanephosphonic acids ntawm amidoalkylation ua raws li hydrolysis
N-tiv thaiv α-aminophosphonic acids (phospho-isosteres ntawm natural amino acids) ntawm amidoalkylation cov tshuaj tiv thaiv
3. Muaj kev siv ： Cov khoom siv no tau tsim los tsis ntev los no thiab tau siv feem ntau los ua cov khoom tshwj xeeb rau cov cassiterite los ntawm cov ores nrog cov kab mob sib xyaw ua ke.Rau lub hauv paus ntawm phosphonic acid, Albright thiab Wilson tau tsim ntau yam ntawm cov khoom siv feem ntau rau flotation ntawm oxidic minerals ( xws li cassiterite, ilmenite thiab pyrochlore).Tsawg heev tsis paub txog kev ua tau zoo ntawm cov khoom siv no.Cov kev tshawb fawb txwv tau ua nrog cassiterite thiab rutile ores pom tau tias qee qhov ntawm cov khoom siv no tsim cov voluminous froth tab sis tau xaiv heev.
Txoj kev tsim khoom:
Cov txheej txheem tsim khoom muaj xws li trichloroic phosphorus thiab phosphoric acid ntsev.Txoj kev hydrolysis maj mam ntxiv dej rau cov tshuaj tiv thaiv hydrolysis nyob rau hauv kev sib xyaw ntawm trichloride los tsim sub-phosphoric acid.Tom qab refining, txias ChemicalBook, lub crystallization thiab discoloration yog ua, thiab cov khoom tiav yog ua.Nws PCI3 + 3H2O → H3PO3 + 3HCL tsim hydrogen chloride rov ua dua thaum lub sijhawm tsim khoom, uas tuaj yeem ua rau hydrochloric acid.
Kev ruaj ntseg:
Flammability yam ntxwv: nyob rau hauv H qhov tus neeg sawv cev combustible;Thaum tshav kub kub decomposes lom phosphorus oxide pa taws.
Cov yam ntxwv ntawm kev khaws cia thiab kev thauj mus los: warehouse ventilation low temperature dry;Khaws cais los ntawm H pore-tso tus neeg saib xyuas thiab alkali.
Ntim: 25kg / hnab
Cia: Khaws rau hauv qhov zoo kaw, lub teeb-resistant, thiab tiv thaiv los ntawm ya raws.
Post lub sij hawm: Feb-27-2023