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Khoom npe:Nitric acid
Molecular hom:HNO 3
CAS Nr:.7697-37-2 ib
Cov khoom siv molecular:
Chemical Properties:
Nitric acid yog xim tsis muaj xim rau lub teeb xim av fuming kua nrog acrid, suffocating tsw. Fuming nitric acid yog cov kua liab fuming. Fumes hauv huab cua noo. Feem ntau siv rau hauv cov tshuaj aqueous. Fuming nitric acid yog concentrated nitric acid uas muaj cov nitrogen dioxide yaj. Nitric acid yog ib qho kev daws ntawm nitrogen dioxide, NO2, nyob rau hauv dej thiab thiaj li hu ua fuming nitric acid muaj ntau tshaj NO2 thiab yog daj mus rau xim av-liab xim.
Cov kua tsis muaj xim; corrosive heev; refractive index 1.397 ntawm 16.5 ° C; ceev 1.503 g / L; khov ntawm -42 ° C; boils ntawm 83 ° C; tag nrho miscible nrog dej; tsim ib qho kev kub ntxhov azeotrope nrog dej ntawm 68.8 wt% nitric acid; azeotrope muaj qhov ceev 1.41 g / mL thiab boils ntawm 121 ° C.
Daim ntawv thov:
Nitric acid yog ib qho tseem ceeb pib cov khoom siv rau kev tsim cov chiv thiab tshuaj. Diluted nitric acid yog siv rau dissolving thiab etching hlau Khoom DataSheet
Cov kua dej hnyav, ntshiab los yog daj me ntsis no yog tshuaj lom heev thiab ua rau mob hnyav heev ntawm kev sib cuag nrog daim tawv nqaij. Nws yog tsim los ntawm distillation ntawm alkali-hlau nitrate ua ke nrog sulfuric acid. Kev sib xyaw ntawm nitric thiab sulfuric acids tau siv los hloov paj rwb dawb rau cellulose nitrate. Nitric acid tau siv rau hauv cov txheej txheem ntub dej ua ib qho ntxiv rau cov neeg tsim khoom ferrous sulfate los txhawb cov duab xim dawb rau ambrotypes thiab ferrotypes. Nws kuj tau ntxiv kom txo qis pH ntawm cov nyiaj da dej rau cov phaj collodion. Ntxiv cov kua qaub rau hauv cov nyiaj da dej ua rau cov phaj collodion tsis tshua nkag siab rau lub teeb, uas muaj txiaj ntsig zoo ntawm kev txo qhov tshwm sim tsis yog duab pos huab.