Shaanxi BLOOM Tech Co., Ltd. yog ib tug ntawm cov uas paub txog manufacturers thiab lwm tus neeg ntawm diethylphosphonoacetic acid cas 3095-95-2 nyob rau hauv Suav teb. Txais tos rau cov lag luam wholesale bulk siab zoo diethylphosphonoacetic acid cas 3095-95-2 muag ntawm no los ntawm peb lub hoobkas. Kev pabcuam zoo thiab tus nqi tsim nyog muaj.
Diethylphosphonoacetic acid, raws li ib qho tseem ceeb organic synthesis reagent, yog pob tshab, tsis muaj xim rau lub teeb daj viscous kua. Cov mis mos molecular C6H13O5P, CAS 3095-95-2, muaj qhov kub siab ntawm kwv yees li 315.9℃C. Nyob rau hauv qhov txo qis siab (xws li 0.05 mmHg), nws qhov kub hnyiab tau txo qis mus txog 150℃C, nrog qhov ntom ntom ntawm kwv yees li 1.220 g / mL25 (meas C).
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Tshuaj Formula |
C6H13O5P |
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Exact Mass |
196 |
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Molecular Luj |
196 |
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m/z |
196 (100.0%), 197 (6.5%), 198 (1.0%) |
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Elemental Analysis |
C, 36.74; H, 6.68; O, 40.78; P, 15.79 |
Piv txwv li, nws cov vapor siab kuj tsis tshua muaj, txog 9.07E-05 mmHg ntawm 25℃C. Qhov vapor siab no txhais tau hais tias cov khoom tsis yooj yim volatile ntawm chav tsev kub, uas yog qhov zoo rau nws lub sijhawm ntev - khaws cia thiab kev thauj mus los. Tsis tas li ntawd, nws kuj muaj qee yam solubility thiab tuaj yeem yaj hauv qee cov kuab tshuaj organic xws li ethanol, acetone, thiab lwm yam, muab kev yooj yim rau nws daim ntawv thov hauv cov organic synthesis. Piv txwv li, nws cov vapor siab kuj tsawg, txog 9.07E-05 mmHg ntawm 25℃C. Qhov vapor siab no txhais tau hais tias nws tsis yooj yim volatile ntawm chav tsev kub, uas yog qhov zoo rau kev khaws cia thiab kev thauj mus los ntev. Tsis tas li ntawd, nws kuj muaj qee yam solubility thiab tuaj yeem yaj hauv qee cov kuab tshuaj organic xws li ethanol, acetone, thiab lwm yam, muab kev yooj yim rau nws daim ntawv thov hauv cov organic synthesis.
Daim ntawv thov ntawmDiethylphosphonoacetic acidNyob rau hauv lub tshav pob ntawm resin synthesis yog qhov tseem ceeb, thiab nws cov khoom siv tshuaj lom neeg ua rau nws ua lub luag haujlwm tseem ceeb hauv kev npaj thiab kev hloov kho ntawm ntau yam hluavtaws resins.
Plasticizers
Plasticizers yog ib qho tseem ceeb thiab tseem ceeb hauv kev npaj cov khoom siv hluavtaws. Cov khoom lag luam, raws li cov khoom siv tau zoo, tau pom cov txiaj ntsig zoo hauv kev npaj cov khoom siv hluavtaws xws li polyvinyl chloride (PVC) thiab polystyrene (PS).
Txhim kho softness thiab ductility
Cov khoom lag luam tuaj yeem txo cov iav hloov pauv kub ntawm cov khoom siv hluavtaws, uas tso cai rau lawv pom zoo softness thiab ductility ntawm qhov kub thiab txias. Cov yam ntxwv no ua rau cov khoom siv hluavtaws nrog ntxiv diethyl phosphoacetic acid yooj yim rau cov txheej txheem thiab cov duab thaum lub sijhawm tsim khoom, xws li khoov thiab ncab, tsis ua rau brittleness lossis kev puas tsuaj, yog li txhim kho kev hloov pauv ntawm cov khoom siv.
Txhim kho kev ua tau zoo
Qhov sib ntxiv ntawm diethyl phosphoacetic acid tuaj yeem txo qhov viscosity ntawm cov khoom siv hluavtaws, txhim kho nws cov dej ntws thiab kev ua haujlwm. Qhov no tso cai rau cov resin kom sib npaug ntawm cov pwm thaum lub sij hawm ua xws li extrusion thiab txhaj tshuaj molding, txo cov khib nyiab thiab tsis xws luag thaum lub sij hawm tsim cov txheej txheem thiab ntxiv kev txhim kho kev lag luam ntau lawm.
Txhim kho durability
Cov khoom lag luam kuj muaj huab cua tsis zoo thiab ruaj khov, uas tuaj yeem txhim kho lub neej kev pabcuam thiab ua haujlwm ntev ntawm cov khoom siv hluavtaws. Cov khoom siv hluavtaws nrog ntxiv diethyl phosphoacetic acid tsis ua rau kev laus, tawg, thiab tawg thaum lub sij hawm ntev - siv sab nraum zoov nyob rau hauv tej yam ntuj tso, ruaj khov kho nws cov tsos zoo thiab kev ua tau zoo.
Tiv thaiv cov nplaim taws
Cov khoom tuaj yeem decompose sai sai thaum lub sij hawm combustion los tsim cov nplaim hluav taws xob xws li phosphoric acid. These substances can quickly cover the surface of the resin to form a dense protective layer, effectively isolating oxygen and heat, thereby effectively suppressing the spread and diffusion of flames and reducing fire hazards.
Txhim kho nplaim retardancy
Los ntawm kev ntxiv qhov tsim nyog ntawm diethyl phosphoacetic acid, cov nplaim hluav taws xob ntawm cov khoom siv hluavtaws tuaj yeem txhim kho kom tau raws li cov qauv kev nyab xeeb dua. Qhov no yog qhov tseem ceeb heev rau kev tsim cov khoom lag luam xws li cov xov hlau thiab cov cables, cov khoom siv hauv tsev, thiab lwm yam uas yuav tsum tau muaj cov nplaim hluav taws kub hnyiab, ua kom muaj kev nyab xeeb ntawm kev siv ntau yam xwm txheej.
Txo cov pa phem emissions
Piv nrog cov tsoos halogenated nplaim retardants, diethyl phosphoacetic acid ua rau tsawg dua cov pa roj carbon monoxide thaum combustion thiab muaj kev cuam tshuam me me rau ib puag ncig thiab tib neeg kev noj qab haus huv. Qhov kev tiv thaiv ib puag ncig zoo li no ua rau nws muaj kev pom dav dav hauv kev lag luam ntawm cov nplaim hluav taws xob, hloov mus rau qhov kev txhim kho ntsuab tam sim no.
Txhim kho wettability thiab dispersibility
Cov khoom tuaj yeem txo qhov nro ntawm cov khoom siv hluavtaws, ua rau lawv yooj yim dua rau ntub thiab tawg hauv cov kuab tshuaj lossis cov xov xwm. Qhov no yog qhov tseem ceeb heev rau kev npaj cov txheej txheem siab - zoo, inks thiab lwm yam khoom lag luam, ua kom cov khoom sib xws thiab txhim kho nws cov txiaj ntsig siv.
Muab cov haujlwm tshwj xeeb
Los ntawm kev ntxiv diethyl phosphoacetic acid, hluavtaws resins kuj tuaj yeem muaj txiaj ntsig nrog qee qhov haujlwm tshwj xeeb, xws li tshuaj tiv thaiv - zoo li qub, tiv thaiv kab mob, tiv thaiv huab cua, thiab lwm yam. Cov khoom siv hluavtaws no muaj cov khoom siv dav dav hauv thaj chaw xws li hluav taws xob, tshuaj, thiab tsheb, zoo dua ua tau raws li kev siv ntau yam kev xav tau ntawm kev lag luam sib txawv.
Lwm daim ntawv thov
Ntxiv nrog rau cov ntawv thov saum toj no, diethyl phosphoacetic acid muaj lwm yam kev siv hauv thaj chaw ntawm resin synthesis. Piv txwv li, nws tuaj yeem siv los ua tus neeg sawv cev crosslinking los ua tus ntoo khaub lig- txuas cov qauv los ntawm kev cuam tshuam nrog cov pab pawg nquag hauv cov resin, txhim kho lub zog thiab hardness ntawm cov resin. Tsis tas li ntawd, diethyl phosphoacetic acid kuj tseem siv tau los ua cov tshuaj tua kab mob antioxidant, lub teeb stabilizer, thiab lwm yam khoom siv ntxiv los txhim kho kev ruaj ntseg thiab ua haujlwm ntev ntawm cov khoom siv hluavtaws.
Diethylphosphonoacetic acidyog ib qho phosphorus uas muaj cov organic compound feem ntau siv hauv cov organic synthesis thiab tshuaj tua kab kev lag luam. Cov tshuaj no tuaj yeem ua ncaj qha los ntawm kev xaiv oxidizing phosphorus thiab ua haujlwm nrog qee yam aldehydes lossis ketones. Cov nram qab no yog cov ncauj lus kom ntxaws cov kauj ruam thiab cov tshuaj sib npaug sib npaug.
1.1 Kev npaj reagent
-Triethyl phosphorus: Qhov no yog qhov tseem ceeb ntawm phosphorus hauv cov tshuaj tiv thaiv.
-Aldehydes lossis ketones: Feem ntau siv suav nrog acetaldehyde (CH3CHO) lossis acetone (CH3COCH3).
-Oxidants: Feem ntau, hydrogen peroxide (H2O2) los yog lwm yam oxidants me me yog siv.
-Cov kuab tshuaj: Anhydrous toluene, dimethyl sulfoxide (DMSO), thiab lwm yam tuaj yeem siv tau.
1.2 Cov khoom siv tshuaj tiv thaiv
-Reaction fwj: feem ntau yog siv cov tshuaj tiv thaiv corrosion-cov iav resistant.
-Magnetic stirrer: siv los xyuas kom meej qhov sib xyaw ntawm cov tshuaj tiv thaiv.
-Condenser: los tiv thaiv volatilization thiab poob ntawm reactants.
2.1 Kev npaj cov tshuaj tiv thaiv kab mob
(1). Ntxiv qhov tsim nyog tus nqi ntawm anhydrous toluene ua cov kuab tshuaj nyob rau hauv lub raj mis qhuav.
(2). Ntxiv triethyl phosphorus los xyuas kom meej tag nrho dissolution.
2.2 Ntxiv Aldehydes lossis Ketones
(1). Maj mam ntxiv acetaldehyde lossis acetone, ua tib zoo saib xyuas qhov sib ntxiv kom tsis txhob muaj kev kub ntxhov.
(2). Do cov sib tov kom nws tusyees dispersed.
2.3 Cov tshuaj tiv thaiv oxidation
(1). Maj mam ntxiv cov tshuaj hydrogen peroxide thaum tuav stirring.
(2). Tswj cov tshuaj tiv thaiv kub ntawm chav tsev kub los yog me ntsis siab dua chav tsev kub (25-35 ° C) kom tsis txhob hydrogen peroxide decomposition tsis ua hauj lwm.
(3). Txuas ntxiv stirring cov tshuaj tiv thaiv, feem ntau yuav tsum tau ob peb teev ntawm cov tshuaj tiv thaiv.
3.1 Reaction mechanism
Cov tshuaj tiv thaiv no suav nrog ntxiv ntawm triethylphosphorus thiab aldehydes / ketones, nrog rau cov kauj ruam tom ntej oxidation. Qhov kev sib npaug tshwj xeeb yog raws li hauv qab no:
ib. Cov tshuaj tiv thaiv ntawm triethylphosphorus nrog acetaldehyde:
(C2H5)3P+CH3CHO → (C2H5)3P-CH (OH)CH3
b. Cov tshuaj tiv thaiv ntawm triethylphosphorus nrog acetone:
(C2H5)3P+CH3COCH3 → (C2H5)3P-C (OH)(CH3) 2
c. Oxidation cov kauj ruam (siv acetaldehyde ua piv txwv):
(C2H5)3P-CH(OH)CH3+H2O2 → (C2H5)2P(O)CH(OH)CH3+C2H5OH
(C2H5)2P(O)CH(OH)CH3 → (C2H5)2P(O)CH=CH2+H2O
d. Kev tsim khoom kawg (siv acetaldehyde ua piv txwv):
(C2H5)2P(O)CH=CH2+O2 → (C2H5)2P(O)CH2COOH
4.1 Kev rho tawm
Tom qab cov tshuaj tiv thaiv tiav, ncuav cov tshuaj tiv thaiv sib tov rau hauv ib qho kev sib cais.
2. Ntxuav cov tshuaj tiv thaiv ntau zaus nrog dej distilled thiab cov kuab tshuaj organic kom tshem tawm cov inorganic impurities thiab unreacted oxidants.
4.2 Solvent distillation
1. Siv lub tshuab rotary evaporator tshem tawm cov kuab tshuaj organic.
2. Ntxiv purify cov khoom seem.
4.3 Txoj kev Purification
1. Recrystallization: Xaiv cov kuab tshuaj uas tsim nyog rau recrystallization raws li kev solubility ntawm cov khoom.
2. Kem chromatography: Ntxiv kev sib cais thiab purification ntawm lub hom phiaj khoom los ntawm kem chromatography.
5.1 Nuclear Sib Nqus Resonance (NMR)
Paub meej cov qauv ntawm cov khoom siv nuclear magnetic resonance hydrogen spectroscopy (NMR) thiab phosphorus spectroscopy (NMR).
5.2 Infrared spectroscopy (IR)
Paub meej tias tus yam ntxwv nqus peaks ntawm carbonyl thiab phosphorus oxygen bonds ntawm cov khoom los ntawm infrared spectroscopy tsom xam.
5.3 pawg spectrometry (MS)
Txiav txim siab qhov hnyav molecular thiab cov qauv siv kev tsom xam loj spectrometry.
Maj mam hydrolysis thiab calcium ion chelation ntawm Cov Khoom nyob rau hauv acidic tej yam kev mob
Diethylphosphonoacetic acid(DPA, CAS naj npawb 3095-95-2), raws li phosphorus uas muaj cov organic acid, nthuav qhia qhov zoo ntawm cov hlau ion chelation, asymmetric synthesis, thiab biosensing vim nws ob pawg ua haujlwm ntawm phosphoryl (- PO (OEt) ₂) thiab carboxyl (- nws cov carboxyl). Hauv kev kho dej hauv kev lag luam, cov ntawv bleaching, textile printing thiab dyeing, DPA yuav tsum tau ua kom zoo chelate nrog calcium ions (Ca ² ⁺) nyob rau hauv acidic tej yam kev mob (pH 2-6) los tiv thaiv cov khoom scaling los yog txhim kho cov txheej txheem efficiency.
Cov qauv molecular ntawm DPA thiab nws cov adaptability rau acidic ib puag ncig
Cov yam ntxwv ntawm Molecular Structure thiab Electronic Distribution
Cov mis molecular ntawm DPA yog C ₆ H ₁ ∝ O ₅ P, thiab nws cov qauv tseem ceeb yog tsim los ntawm phosphoacetic acid skeleton:
Phosphoryl pawg (- PO (OEt) ₂): Cov phosphorus atom txais sp ³ hybridization los ua ib qho kev teeb tsa tetrahedral, thiab ob pawg ethoxy (- OEt) muab electron huab ntom ntom, ua rau cov phosphorus ib feem ntawm qhov zoo ⁺ kev tawm tsam) thiab δ.
Carboxyl pawg (- COOH): Lub zog electron tshem tawm cov nyhuv ntawm carbonyl oxygen (O=C) ua rau carboxyl hydrogen (H) yooj yim dissociated (pKa ≈ 3.48), thiab tseem tuaj yeem cuam tshuam ib nrab rau hauv - COO ⁻ nyob rau hauv acidic tej yam kev mob, muab chelating qhov chaw.
Kev cuam tshuam ntawm Acid Ib puag ncig ntawm Molecular Stability
Kev ruaj ntseg ntawm DPA hauv acidic media nrog pH 2-6 yog tswj los ntawm cov hauv qab no:
Kev sib tw Protonation: Muaj kev sib tw ntawm protonation ntawm pawg carboxyl (- COOH ₂⁺) thiab protonation ntawm phosphoryl pawg (- PO (OH) (OEt) ₂). Kev suav qhia tias ntawm pH 3, qhov feem ntawm carboxyl protonation yog kwv yees li 15%, thaum qhov kev faib ua feem ntawm phosphoryl matrix protonation tsawg dua 5%, qhia tias carboxyl yog lub ntsiab reactive chaw nyob rau hauv acidic tej yam kev mob.
Hydrolysis sensitivity: The P-O bond of phosphoryl groups (bond energy of approximately 360 kJ/mol) is susceptible to attack by water molecules under acidic conditions, leading to gradual hydrolysis. Experimental data shows that in a pH 3 buffer solution, the half-life of DPA is approximately 12 hours, significantly shorter than under neutral conditions (pH 7, half-life>72 teev).
Maj mam hydrolysis mechanism ntawm DPA nyob rau hauv acidic tej yam kev mob
Nyob rau hauv acidic tej yam kev mob, lub hydrolysis ntawm DPA pib nrog kev hloov ntawm ib pawg ethoxy (- OEt) ntawm phosphoryl pab pawg neeg los ntawm ib tug dej molecule, uas ua rau tsim ntawm monoethyl phosphonoacetic acid (MEPA):
Reaction kinetics: Calculated by density functional theory (DFT) at the B3LYP/6-311+G level, the activation energy (Δ G ‡) for this step is 102.3 kJ/mol, and the reaction rate constant k ₁ is approximately 1.2 × 10 ⁻⁴⁴⁻¹ at 25℃.
Kev daws teebmeem: Cov dej molecules stabilize cov nqi tsis zoo nyob rau hauv lub xeev kev hloov pauv los ntawm hydrogen bonding, txo qhov ua kom lub zog. Ntawm pH 3, qhov concentration ntawm H ⁺ (10 ⁻³ M) nce k ₁ mus rau 2.8 × 10 ⁻⁴ s ⁻¹ los ntawm protonation ntawm ethoxy oxygen atoms (txhim kho lawv lub peev xwm tawm).
MEPA yog ntxiv hydrolyzed los tsim phosphoacetic acid (PA):
Reaction zog barrier: DFT xam qhia tias Δ G‡ ntawm theem thib ob hydrolysis yog 115.6 kJ/mol, uas yog siab tshaj thawj kauj ruam (vim xav tau ib txhij ua txhaum ob P-O bonds), uas ua rau ib tug ho txo qis k ₂ (kwv yees li 3.5⁻ ¹)℃tshaj k ₁.
PH dependence: Ntawm pH 2, H ⁺ concentration (10 ⁻ ² M) protonates ob pawg ethoxy, nce k ₂ mus rau 1.2 × 10 ⁻⁴ s ⁻¹. Txawm li cas los xij, ntawm lub sijhawm no, qhov pib hydrolysis ntawm DPA (k ₁) qeeb qeeb vim kev sib tw protonation, thiab tag nrho cov hydrolysis tus nqi qhia tau hais tias tsis muaj kev hloov pauv.
PA yog ruaj khov nyob rau hauv acidic tej yam kev mob, nrog pKa ₁=1.2 thiab pKa ₂=6.7 rau nws cov phosphoryl pawg (- PO ∝ H ₂), qhia tias PA feem ntau muaj nyob rau hauv daim ntawv ntawm - PO ∝ H ⁻ thiab {{4} p. 2-6, muab cov chaw tseem ceeb rau cov calcium ion chelation tom ntej.
Module npe
Diethylphosphonoacetic acid(CAS 3095-95-2), tseem hu ua (diethoxyphosphinyl) acetic acid, yog ib qho tseem ceeb organophosphorus compound nrog ib pawg carboxyl thiab phosphonate qauv. Nws qhov kev tshawb pom thiab kev loj hlob tau txuas nrog rau kev nce qib ntawm organophosphorus chemistry nyob rau hauv lub xyoo pua 20th, nrog rau nws cov synthesis thiab daim ntawv thov kev tshawb fawb maj mam tob zuj zus mus ntau xyoo lawm.
Nyob rau hauv nruab nrab - xyoo pua 20th, raws li organophosphorus tebchaw tau txais kev saib xyuas nyob rau hauv cov organic synthesis thiab cov ntaub ntawv science, cov kws tshawb fawb pib tshawb nrhiav phosphonate derivatives nrog ob pawg ua haujlwm. Cov khoom lag luam tau tsim thawj zaug thiab raug txheeb xyuas thaum xyoo 1960s, pib los ntawm - cov khoom lag luam hauv kev sib txuas ntawm triethyl phosphonoacetate, ib qho tseem ceeb reagent hauv Horner -Wadsworth-Emmons cov tshuaj tiv thaiv.
Cov txheej txheem synthesis thaum ntxov yog cov cumbersome, nrog tsawg yields thiab tsis zoo purity. Nws tsis yog txog thaum xyoo 1990s uas cov kws tshawb fawb tau txhim kho txoj kev sib txuas, tsim kom muaj txoj kev paub tab siv triethyl phosphonoacetate ua cov khoom siv raw, uas ua rau hydrolysis nyob rau hauv alkaline tej yam kev mob thiab acid neutralization kom tau lub hom phiaj cov khoom nrog ib tug yield txog li 100%. Qhov kev ua kom zoo dua no tau tso lub hauv paus rau nws txoj kev tshawb fawb thiab kev siv dav dav.
Txij li thaum xyoo 1990s lig, nws cov tshuaj lom neeg tshwj xeeb tau maj mam tshawb nrhiav. Cov kev tshawb fawb hauv xyoo 1996 tau nthuav tawm nws lub luag haujlwm hauv kev sib txuas ntawm -keto phosphonates, ib qho tseem ceeb hauv nruab nrab ntawm cov organic synthesis. Nrog rau txoj kev loj hlob ntawm hluavtaws chemistry, nws tau raug siv ntxiv raws li ib tug nucleophile nyob rau hauv nucleophilic ntxiv tshuaj, nthuav nws daim ntawv thov. Niaj hnub no, nws yog dav siv nyob rau hauv cov organic synthesis, cov ntaub ntawv hloov kho thiab lwm yam teb, nws discovery keeb kwm qhia txog kev vam meej ntawm organophosphorus compound kev tshawb fawb.
Cim npe nrov: Diethylphosphonoacetic acid CAS 3095-95-2, lwm tus neeg, manufacturers, hoobkas, lag luam wholesale, yuav, nqe, tej, kev muag khoom