Koj paub nws npaum li cas? Koj puas paub nws qhov chaw yog dab tsi?
Koj paub nws npaum li cas? Koj puas paub nws qhov chaw yog dab tsi?,
Suav manufacturers, domestic manufacturers, phosphate manufacturers, phosphate nqi, tus nqi ntawm phosphate, Dab tsi yog kev siv phosphate,
Physicochemical zog:
1. Colorless pob tshab kua, Tsis muaj irritant tsw
2. Melting point 42 ℃; Kub taw tes 261 ℃.
3.Missible nrog dej hauv txhua qhov sib piv
Storge:
1. Khaws rau hauv qhov chaw txias, cua txias.
2. Khaws kom deb ntawm qhov hluav taws kub thiab cua sov.
3. Lub pob yog kaw.
4. Nws yuav tsum tau muab cais los ntawm yooj yim (combustible) combustibles, alkalis, thiab active hlau hmoov, thiab tsis txhob sib tov cia.
5. Qhov chaw cia khoom yuav tsum tau nruab nrog cov ntaub ntawv tsim nyog kom muaj cov xau.
Phosphoric acid rau Industrial siv
Cov lus qhia zoo (GB / T 2091-2008)
Cov khoom tsom xam | specification | |||||
85% Phosphoric acid | 75% Phosphoric acid | |||||
Super Qib | Qib thib ib | Qib ib txwm | Super Qib | Qib thib ib | Qib ib txwm | |
Xim / Hazen ≤ | 20 | 30 | 40 | 30 | 30 | 40 |
Phosphoric acid (H3PO4), w/% ≥ | 86.0 ua | 85.0 ua | 85.0 ua | 75.0 ua | 75.0 ua | 75.0 ua |
Chloride (C1), w/% ≤ | 0.0005 | 0.0005 | 0.0005 | 0.0005 | 0.0005 | 0.0005 |
Sulfate (SO4), w/% ≤ | 0.003 ib | 0.005 ib | 0.01 ib | 0.003 ib | 0.005 ib | 0.01 ib |
Hlau (Fe), W /% ≤ | 0.002 ib | 0.002 ib | 0.005 ib | 0.002 ib | 0.002 ib | 0.005 ib |
Arsenic (As), w/% ≤ | 0.0001 | 0.003 ib | 0.01 ib | 0.0001 | 0.005 ib | 0.01 ib |
Cov hlau hnyav (Pb), w/% ≤ | 0.001 ib | 0.003 ib | 0.005 ib | 0.001 ib | 0.001 ib | 0.005 ib |
Khoom noj khoom haus additives phosphoric acid
Cov lus qhia zoo (GB / T 1886.15-2015)
Yam khoom | specification |
Phosphoric acid (H3PO4), w/% | 75.0-86.0 Nws |
Fluoride (as F) / (mg / kg) ≤ | 10 |
Ib qho yooj yim oxide (raws li H3PO3), w /% ≤ | 0.012 ib |
Arsenic (As) / (mg / kg) ≤ | 0.5 |
Cov hlau hnyav (raws li Pb) / (mg / kg) ≤ | 5 |
Siv:
Kev ua liaj ua teb siv: raw khoom ntawm phosphate fertilizer thiab pub cov as-ham
Kev lag luam siv: chemical raw khoom
1. Tiv thaiv cov hlau los ntawm corrosion
2.Mixed nrog nitric acid ua tshuaj polishing tus neeg saib xyuas kom txhim kho qhov chaw tiav ntawm cov hlau
3.Material ntawm phosphatide uas yog siv los tsim cov khoom siv ntxhua khaub ncaws thiab tshuaj tua kab
4.Kev tsim cov phosphorus uas muaj cov ntaub ntawv flameretardant.
Khoom noj khoom haus additives siv: acidic flavoring, Poov Nutri-ents, xws li coca-cola.
Kev siv kho mob: los tsim cov tshuaj uas muaj phos-phorus, xws li Na 2 Glycerophosphat
Tom qab qhov kev tshawb pom ntawm phosphorus thiab German chemist Conquer los tsim phosphorus, British chemist Bo Yili kuj ua nws tus kheej tsim phosphorus. Nws kuj yog thawj kws tshuaj uas kawm txog phosphorus thiab cov tebchaw. Phau ntawv thesis "Ib qho kev sim tshiab ntawm lub teeb txias pom" tau sau tias "Phosphorus tsim cov pa luam yeeb dawb tom qab hlawv, thiab cov tshuaj tsim tawm tom qab kev ua ntawm cov pa taws dawb thiab dej yog acidic." ), Thiab cov kev daws teeb meem tsim nrog dej yog phosphate, tab sis nws tsis tau kawm ntxiv phosphate.
Cov kws tshawb fawb ntxov tshaj plaws uas kawm phosphate yog Fab Kis kws tshuaj Lawar. Xyoo 1772, nws tau ua qhov kev sim no: Muab cov phosphorus tso rau hauv lub mercury-sealed tswb cover kom hlawv nws. Cov txiaj ntsig kev sim tau xaus lus tias qee qhov nyiaj ntawm phosphorus tuaj yeem hlawv hauv huab cua ntawm lub peev xwm; cov hmoov dawb ntawm cov dej-dawb phosphorus yog tsim thaum phosphorus hlawv, xws li cov daus zoo; 80% yog '; phosphorus yog kwv yees li 2.5 zaug ua ntej hlawv; cov hmoov dawb yog yaj hauv dej kom tsim phosphate. Lavis kuj ua pov thawj tias phosphate tuaj yeem ua nrog cov concentrated nitric acid thiab phosphorus.
Tom qab ntau tshaj 100 xyoo, German chemist Libii tau ua ntau yam kev sim tshuaj ua liaj ua teb los nthuav qhia tus nqi ntawm phosphorus thiab phosphate ntawm cov nroj tsuag lub neej. Xyoo 1840, Li Bixi's "Lub luag haujlwm ntawm cov organic chemistry hauv kev ua liaj ua teb thiab physiology" kev tshawb fawb pom tias muaj teeb meem fertility ntawm av thiab taw qhia lub luag haujlwm ntawm phosphorus ntawm cov nroj tsuag. Nyob rau tib lub sijhawm, nws tau tshawb nrhiav ntxiv txog kev siv phosphate thiab phosphate ua chiv, thiab kev tsim cov phosphate tau nkag mus rau lub sijhawm loj.