Phosphoric Acid Reagent CAS 7664-38-2

Phosphoric acid reagent, kuj hu ua orthophosphoric acid, yog ib tug multifaceted inorganic acid nrog cov tshuaj formula H₃PO₄. Nws tshwm sim nyob rau hauv ntau yam minerals thiab muaj peev xwm yuav synthesized industrially los ntawm ob peb txheej txheem. Cov kua txiv hmab txiv ntoo tsis muaj xim no yog corrosive heev thiab muaj cov yam ntxwv tsw zoo li cov kua txiv hmab txiv ntoo.

Nws plays lub luag haujlwm tseem ceeb hauv ntau qhov kev lag luam. Hauv kev ua liaj ua teb, nws ua haujlwm tseem ceeb hauv cov chiv, muab cov phosphorus tseem ceeb rau cov nroj tsuag, uas yog qhov tseem ceeb rau lawv txoj kev loj hlob thiab kev loj hlob. Kev lag luam zaub mov feem ntau siv nws ua acidulant, preservative, thiab tsw enhancer nyob rau hauv dej haus, tiav nqaij, thiab cov khoom noj siv mis nyuj, pab kom saj thiab ncua lub neej txee.

Ntxiv mus, nws pom cov ntawv thov hauv kev tsim cov tshuaj detergents thiab tshuaj ntxuav vim nws muaj peev xwm ua kom dej muag thiab tshem tawm stains. Nws kuj tseem ua haujlwm nyob rau hauv kev tsim cov ceramics, iav, thiab enamel, qhov twg nws ua raws li cov flux kom txo cov melting kub thiab txhim kho cov khoom tiav zoo.

Hauv kev lag luam tshuaj, nws ua haujlwm los ua cov khoom siv raw rau kev tsim lwm cov phosphorus - muaj cov khoom sib txuas, xws li phosphates, esters, thiab organophosphorus compounds. Tsis tas li ntawd, nws muaj cov ntawv kho mob, suav nrog kev siv cov hniav etching gels los npaj cov hniav enamel rau kev sib txuas.

Txawm li cas los xij, nws txoj kev siv dav dav yuav tsum sib npaug nrog kev ceev faj, vim tias qhov tshwm sim ntau dhau tuaj yeem ua rau tawv nqaij, qhov muag, thiab ua pa. Kev tuav thiab pov tseg kom zoo yog qhov tseem ceeb los txo qhov kev pheej hmoo ntawm ib puag ncig thiab kev noj qab haus huv cuam tshuam nrog phosphoric acid.

Cov kws tshawb fawb ntxov tshaj plaws uas tau kawmphosphoric acid reagentyog Fab Kis kws tshuaj Lavoisier. Xyoo 1772, nws tau ua qhov kev sim no: muab phosphorus tso rau hauv lub thawv tswb kaw nrog mercury kom nws hlawv. Raws li cov txiaj ntsig kev sim, nws tau txiav txim siab tias qee qhov nyiaj ntawm phosphorus tuaj yeem hlawv hauv qee qhov ntim ntawm huab cua; Thaum phosphorus kub hnyiab, nws tsim dawb flakes ntawm anhydrous phosphorus, xws li cov daus zoo; Tom qab combustion, huab cua nyob rau hauv lub raj mis tseem nyob li ntawm 80% ntawm qhov qub peev xwm; Phosphorus yog li 2.5 npaug hnyav dua tom qab combustion dua li ua ntej combustion; Cov hmoov dawb yog yaj hauv dej los tsim cov khoom. Lavoisier kuj tau ua pov thawj tias nws tuaj yeem npaj tau los ntawm cov tshuaj tiv thaiv ntawm cov concentrated nitric acid thiab phosphorus.

Kwv yees li ib puas xyoo tom qab, German chemist Li Bishi tau ua ntau yam kev sim hauv kev ua liaj ua teb chemistry los nthuav tawm tus nqi ntawm phosphorus thiab phosphoric acid rau cog lub neej. Lub luag haujlwm ntawm cov organic chemistry hauv kev ua liaj ua teb thiab physiology, sau los ntawm libich hauv xyoo 1840, kev tshawb fawb qhia txog qhov teeb meem ntawm av fertility thiab taw qhia lub luag haujlwm ntawm phosphorus ntawm cov nroj tsuag. Nyob rau tib lub sijhawm, nws kuj tau tshawb nrhiav ntxiv rau daim ntawv thov thiab phosphate ua chiv, thiab txij li ntawd mus, kev tsim khoom tau nkag mus rau lub sijhawm loj - teev ntau lawm.

Orthophosphoric acid yog phosphoric acid tsim los ntawm ib qho phosphorus oxygen tetrahedron. Nyob rau hauv lub molecule, lub P atom yog SP3 hybrid, thiab peb hybrid orbitals yog tsim los ntawm peb hybrid orbitals thiab cov pa atom σ Bond, lwm yam P-O daim ntawv cog lus yog tsim los ntawm ib daim ntawv cog lus los ntawm phosphorus rau oxygen σ Thiab ob D-P bonds ntawm oxygen mus rau phosphorus. σ Cov ntawv cog lus yog tsim los ntawm kev sib koom ua ke ntawm ib khub ntawm ib leeg ib leeg electrons ntawm phosphorus atom mus rau qhov khoob ntawm cov pa oxygen atom. D ← P kev sib koom ua ke daim ntawv cog lus yog tsim los ntawm kev sib tshooj ntawm ob khub ntawm ib leeg ib leeg electrons ntawm PY thiab PZ orbitals ntawm oxygen atom thiab dxz thiab dyz khoob orbitals ntawm phosphorus atom. Vim tias 3D lub zog ntawm phosphorus atom yog siab dua li 2p lub zog ntawm oxygen atom, lub molecular orbital tsim tsis zoo, yog li P-O daim ntawv cog lus yog triple daim ntawv cog lus raws li tus lej, tab sis nws yog nyob nruab nrab ntawm ib daim ntawv cog lus thiab ob daim ntawv cog lus ntawm daim ntawv cog lus lub zog thiab daim ntawv cog lus ntev. Hydrogen bonds muaj nyob rau hauv ob qho tib si ntshiab H3PO4 thiab nws cov siv lead ua hydrate, uas tej zaum yuav yog vim li cas rau lub viscosity ntawm concentrated cov tshuaj.

Phosphoric acid, ua ib qho tseem ceeb inorganic acid, plays lub luag hauj lwm irreplaceable nyob rau hauv ntau yam teb xws li electroplating thiab polishing, textile dyeing, thiab biochemical txheej txheem vim nws cov yam ntxwv tshuaj. Peb pawg hydroxyl (- OH) nyob rau hauv nws cov qauv molecular endowed nws nrog polyanionic acid zog, tso cai rau nws tsim phosphates ruaj khov thiab ua tiav buffering muaj nuj nqi los ntawm kev kho pH, ua rau nws yog ib qho tseem ceeb cov khoom nyob rau hauv industrial ntau lawm thiab lom metabolism.

Electroplating thiab Polishing Kev Lag Luam: Precision Engravers rau Hlau Nto Kho

 

1. Cov khoom tseem ceeb ntawm cov tshuaj electropolishing
Phosphoric acid reagentoccupies ib tug tseem ceeb txoj hauj lwm nyob rau hauv cov txheej txheem hluav taws xob polishing, thiab nws cov viscosity siab, tsis tshua muaj tshuaj solubility, thiab yooj yim tsim ntawm kev tiv thaiv zaj duab xis ua rau nws yog ib qho zoo tagnrho xaiv rau polishing hlau xws li hlau thiab stainless hlau. Noj stainless hlau electro polishing ua piv txwv, cov concentration ntawm phosphoric acid feem ntau yog tswj nyob rau hauv thaj tsam ntawm 60% -85%, thiab nws yog tov nrog sulfuric acid, chromic acid, thiab lwm yam. Nws mechanism ntawm kev txiav txim yog raws li nram no:

 

Diffusion txheej tswj: High viscosity phosphoric acid tsim ib txheej diffusion ntawm cov hlau nto, ua kom qeeb ntawm diffusion tus nqi ntawm cov hlau ions, tsis txhob muaj kev cuam tshuam hauv zos ntau dhau, thiab ua kom lub ntsej muag zoo sib xws.
Nyias zaj duab xis tiv thaiv: Cov phosphate zaj duab xis tsim los ntawm reacting nrog hlau npog qhov chaw, inhibits tshuaj dissolution, tsuas tso cai rau electrochemical micro dissolution, thiab ua tiav ib tug "leveling thiab polishing" nyhuv.
Current density regulation: Under this system, the polishing limit current density is relatively low (about 10-50A/dm ²), maintaining a stable polishing process and avoiding ablation or excessive roughness.

 

2. Composite formula optimization kev ua tau zoo
Hauv kev siv tswv yim, nws feem ntau ua ke nrog lwm cov kua qaub:
Sulfuric acid: Ntxiv 5% -15% sulfuric acid tuaj yeem txhim kho polishing ceev thiab ci ntsa iab, tab sis cov nyiaj ntau dhau tuaj yeem ua rau muaj zog corrosion. Piv txwv li, ib qho kev daws teeb meem stainless hlau polishing yog tsim nrog 70% phosphoric acid, 10% sulfuric acid, 5% glycerol, thiab 15% dej. Thaum polished ntawm 60℃rau 10 feeb, qhov nto roughness yuav raug txo los ntawm Ra1.2 μ m rau Ra0.2 μ m.

 

Chromic acid: Ib qho me me ntawm chromic acid (2% -5%) txhawb kev tsim cov oxide zaj duab xis thiab txhim kho cov nyhuv leveling. Txawm li cas los xij, vim muaj kev cuam tshuam ib puag ncig, cov txheej txheem niaj hnub no maj mam hloov cov organic acids xws li citric acid thiab tartaric acid.
Additives: Organic tshuaj xws li glycerol thiab gelatin tuaj yeem txhim kho qhov zoo thiab txo qis pitting; Thiourea thiab lwm yam corrosion inhibitors tiv thaiv cov chaw tsis muaj polished.

 

3. Cov ntsiab lus tseem ceeb ntawm cov txheej txheem parameter tswj
Kub: feem ntau tswj ntawm 50-80 degree. Ua kom qhov kub thiab txias tuaj yeem ua kom nrawm nrawm, tab sis ntau dua 85℃tuaj yeem ua rau evaporation sai ntawm cov tshuaj thiab cov nqi nce ntxiv.
Qhov ceev tam sim no: Kho raws li cov khoom siv hlau, nrog cov pa roj carbon steel xws li 10-30A / dm ² thiab stainless hlau xws li 20-50A / dm ². Kev ceev tam sim no ntau dhau tuaj yeem ua rau pitting corrosion.
Sijhawm: Lub sijhawm polishing yuav tsum tau tswj nruj me ntsis, piv txwv li, polishing aluminium alloy rau 3-5 feeb yog txaus. Yog hais tias nws ntev dhau lawm, nws yuav ua rau nto roughness.

Kev lag luam textile thiab dyeing: tus 'tus saib xyuas tsis pom' ntawm cov xim thiab zoo

 

1. Dyeing thiab luam ntawv mordants thiab catalysts
Ua ntau lub luag haujlwm hauv textile dyeing:
Matchmaker: tsim complexes nrog hlau ions (xws li txhuas thiab hlau) kom immobilize dye molecules. Piv txwv li, thaum dyeing indigo, aluminium phosphate mordant tuaj yeem txhim kho xim nrawm los ntawm 1-2 qib.
Catalyst: accelerates cov tshuaj tiv thaiv ntawm dye thiab fiber. Nyob rau hauv reactive dyeing dyeing, lub activation zog ntawm cov tshuaj tiv thaiv yuav txo tau, cia cov dye yuav kho nyob rau hauv 30 feeb ntawm 60 degree, uas yog 50% luv dua cov txheej txheem tsis catalyst.
PH regulator: tswj pH stability ntawm cov tshuaj zas xim. Thaum dyeing paj rwb fibers, phosphate buffer system (pH 6-7) tuaj yeem tiv thaiv dye hydrolysis thiab nce dye uptake los ntawm 10% -15%.

 

2. Silk gloss agent thiab anti fouling agent
Gloss txhim kho: Kev ua tiav tuaj yeem tsim cov qauv microcrystalline ntawm cov kab lo lo ntxhuav, txhim kho lub teeb pom kev zoo, thiab nce glossiness los ntawm 20% -30%. Tom qab kev kho mob nrog kev sib xyaw ntawm phosphoric acid (5g / L) thiab sodium sulfate (20g / L), glossiness ntawm cov ntaub lo lo ntxhuav tau nce ntawm 75 mus rau 92 (kuaj ntsuas: Datacolor 650).
Kev tiv thaiv fouling: Reacts nrog fibers los tsim phosphate esters, txo cov zog saum npoo thiab txo cov roj paug. Qhov kev sim tau pom tias lub kaum sab xis ntawm cov ntaub paj rwb tau kho nrog phosphoric acid nrog cov roj noj tau nce ntawm 65℃mus rau 110 degree, thiab qib tiv thaiv fouling mus txog qib 4 (GB / T 30159-2013).

 

3. Kho tus neeg sawv cev thiab dyeing txheej txheem optimization
Khoom xim txheej txheem: tsim hydrogen bonds los yog ionic bonds nrog dye molecules los txhim kho kev khi lub zog. Piv txwv li, tom qab dyeing ncaj qha nrog dyes, kev kho mob nrog ib tug sib tov ntawm phosphoric acid (3%) thiab kho tus neeg sawv cev Y (2%) tuaj yeem txhim kho xim ceev (rubbing / ntxuav) los ntawm 0.5-1 qib.
Cov txheej txheem tsis muaj: Qhov kub dyeing feem ntau yog tswj ntawm 80-95 degree, lub sij hawm yog 60-90 feeb, thiab qhov ntau npaum yog hloov raws li hom dye (active dye 1% -3%, acid dye 3% -5%).

Cov txheej txheem biochemical: 'lub zog hub' ntawm kev ua neej nyob

 

1. Biomolecular skeleton thiab lub zog nqa khoom
Nws yog ib qho tseem ceeb ntawm lub neej system:
Nucleic acid qauv: Hauv ob lub helix ntawm DNA, phosphate pawg alternate nrog deoxyribose los ua ib tug txha caj qaum, siv 10 phosphate molecules rau txhua 10 lub hauv paus khub. Phosphoric acid nyob rau hauv RNA kuj koom nrog hauv kev tsim cov pob txha, tab sis cov qauv ib leeg ua rau nws yooj yim rau degrade.
Lub zog txiaj ATP: Hauv ATP molecules, peb pawg phosphate txuas nrog siab - zog phosphate bonds thiab tso tawm lub zog thaum hydrolysis (Δ G℃'=-30.5 kJ/mol). Tib neeg lub cev synthesizes txog 50kg ntawm ATP ib hnub twg kom tau raws li cov kev xav tau ntawm lub zog xws li cov leeg nqaij contraction thiab paj hlwb conduction.

 

Phospholipid membrane: Lub cell membrane yog tsim los ntawm phospholipid bilayers, txhua phospholipid molecule uas muaj ib pab pawg neeg phosphate, tsim ib lub taub hau hydrophilic thiab ib tug hydrophobic tail los ua ke tsim ib tug cell barrier.

2. Kev tswj hwm metabolic thiab teeb liab hloov
Qab Zib metabolism: Phosphorylation yog cov kauj ruam tseem ceeb hauv cov piam thaj metabolism. Piv txwv li, qabzib, catalyzed los ntawm hexokinase, noj 1 molecule ntawm ATP los tsim cov piam thaj-6-phosphate, uas nkag mus rau glycolysis txoj kev. Txhua molecule ntawm qabzib tuaj yeem tsim 2 molecules ntawm ATP los ntawm glycolysis.

 

Protein modification: Protein phosphorylation yog lub hauv paus mechanism ntawm cellular transduction. Kwv yees li 5% ntawm cov noob hauv tib neeg genome encode protein kinases, uas tuaj yeem ua rau cov phosphorylation ntawm cov amino acids tshwj xeeb (serine, threonine, tyrosine) hauv cov protein, tswj kev ua haujlwm enzyme, lub voj voog ntawm tes, thiab lwm yam txheej txheem.
Tsis muaj qhov system: Phosphate buffered saline (PBS) yog ib qho tshuaj nquag siv hauv kev sim tshuaj biochemical, nrog pKa qhov tseem ceeb (pKa 1=2.15, pKa 2=7.20, pKa 3=12.35) npog lub cev pH ntau yam (6.8-7.4), uas tuaj yeem tswj hwm kev ua haujlwm enzyme stability. Piv txwv li, ntxuav hlwb nrog PBS (pH 7.4) thaum lub sij hawm DNA rho tawm tuaj yeem tiv thaiv DNA degradation.

 

3. Muaj Biochemical Applications
Fermentation nruab nrab: Phosphates yog cov khoom noj tseem ceeb rau kev loj hlob ntawm microbial, koom nrog ATP synthesis thiab nucleic acid metabolism. Piv txwv li, thaum tsim cov tshuaj insulin los ntawm fermentation ntawm Escherichia coli, qhov concentration ntawm poov tshuaj phosphate nyob rau hauv kab lis kev cai nruab nrab yuav tsum tau tswj ntawm 5-20mM, raws li ib tug tsawg concentration yuav ua rau kom cov kab mob qeeb.
Enzyme catalyzed cov tshuaj tiv thaiv: Phosphates tuaj yeem ua cov enzyme cofactors lossis activators. Piv txwv li, thaum alkaline phosphatase catalyzes hydrolysis ntawm phosphate monoesters, cov nyhuv synergistic ntawm Mg ² ⁺ thiab phosphate ions yuav tsum tau, uas tuaj yeem nce cov tshuaj tiv thaiv los ntawm 10 ³ zaug.

Phosphoric acid reagentplays lub luag hauj lwm irreplaceable nyob rau hauv electroplating thiab polishing, textile dyeing, thiab biochemical txheej txheem vim nws cov yam ntxwv tshuaj. Los ntawm precision carving ntawm hlau nto mus rau lub zog hloov hauv lub neej kev ua ub no, los ntawm cov yeeb yuj textiles mus rau ntsuab thiab sustainable industrial ntau lawm, muaj phosphoric acid nyob txhua qhov chaw.

Cim npe nrov: phosphoric acid reagent cas 7664-38-2, lwm tus neeg, manufacturers, hoobkas, lag luam wholesale, yuav, nqe, tej, kev muag khoom