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Orthophosphoric acid (Phosphoric acid, orthophosphoric acid, E338)
Orthophosphoric (phosphoric) acid yog ib qho sib xyaw los ntawm qeb ntawm inorganic, tsis muaj zog acid. Hauv kev lees paub kev faib khoom ntawm cov khoom noj ntxiv, orthophosphoric acid muaj tus lej E338, belongs rau pawg antioxidants ( antioxidants), thiab yog siv los ua cov kua qaub.
Cov tshuaj formula H3PO4. Ntawm qhov kub siab tshaj 213 ° C, nws hloov mus rau pyrophosphoric acid H4P2O7. Zoo heev soluble nyob rau hauv dej.
Cov yam ntxwv dav dav ntawm E338
Orthophosphoric acid muaj cov yam ntxwv ntawm lub cev hauv qab no - cov khoom siv crystalline tsis muaj xim thiab tsis hnov tsw, zoo soluble hauv cov kuab tshuaj dej, feem ntau siv hauv cov kua syrupy (85% aqueous tov ntawm orthophosphoric acid). Orthophosphoric acid yog muab tshuaj los ntawm phosphate los yog hydrolysis (calorizator). Orthophosphoric acid yog tus cwj pwm los ntawm tus nqi qis (yog tias piv, piv txwv li, nrog citric acid), yog li nws feem ntau siv rau hauv kev tsim khoom noj thiab dej haus.
Kev puas tsuaj ntawm Orthophosphoric acid
Lub ntsiab tsis zoo ntawm E338 rau tib neeg lub cev yog ua kom cov acidity, yog li cuam tshuam cov kua qaub-puag tshuav, yog li cov khoom uas muaj E338 yuav tsum tau siv nrog ceev faj heev rau cov neeg uas muaj gastritis nrog acidity siab, hom phiaj-kom tshem tawm lawv los ntawm kev noj haus. . Raws li kws kho mob, Orthophosphoric acid muaj cov cuab yeej ntawm leaching calcium los ntawm lub cev, uas muaj ib tug heev unfavorable nyhuv ntawm cov hniav enamel thiab pob txha cov ntaub so ntswg, ua rau caries thiab osteoporosis. Kev noj ntau dhau ntawm E338 ua rau mob plab hnyuv, xeev siab thiab ntuav.
Daim Ntawv Thov ntawm E338
Raws li tus tswj hwm ntawm acidity, Orthophosphoric acid yog siv hauv kev lag luam khoom noj kom muab cov khoom qab zib los yog iab me ntsis. Nws yog siv hauv kev tsim cov dej qab zib carbonated, cov cheese ua tiav, qee yam khoom siv hnyuv ntxwm thiab ci hmoov.
Lwm daim ntawv thov ntawm Orthophosphoric acid: kho hniav, cosmetology, aviation thiab kws tshuaj industries, zus tau tej cov detergents thiab xeb converters. Hauv kev ua liaj ua teb, Orthophosphoric acid yog ib feem ntawm ntau hom chiv.
Kev Siv E338
Ntawm thaj chaw ntawm peb lub teb chaws, kev siv cov tshuaj Orthophosphoric acid raug tso cai, ua raws li cov qauv kev tso cai siab tshaj plaws ntawm kev siv yog yuav tsum tau ua.