Khoom Taw qhia
| Tetramethylammonium hydroxide pentahydrate Cov ntaub ntawv yooj yim |
| Daim Ntawv Qhia Siv cov txheej txheem npaj txheej txheem piav qhia ntawm electrolysis Chemical properties |
| Khoom npe: | Tetramethylammonium hydroxide pentahydrate |
| Synonyms: | TMAH Pentahydrate; Tetramethyl ammoniumhydroxide pentahydrate; Tetramethylammonium hydroxide, 10% w/w Aqueous Solution, Electronic Grade, 99.9999% (hlau hauv paus); Tetramethylammonium Hydroxide-D135 D2O; Methanaminium, N, N, methyllam-N-hydrate; 97% Tetramethylammonium hydroxide pentahydrate, 99%, TetramethylaMMoniuM hydroxide pentahydrate, 97% 100GR |
| CAS: | 10424-65-4 |
| MF: | C4H23 NPO 6 |
| MW: | 181.23 |
| EINECS: | 629-762-8 |
| Khoom Categories: | Organic Bases; Ammonium; Chemical Synthesis; Ionic Liquids; Tshwj Xeeb Synthesis; Synthetic Reagents; Ammonium Hydroxides (Quaternary); Quaternary Ammonium Compounds; AmmoniumChemical Synthesis; Core Bioreagents; Detergents A rau ZDetergents; Cov tshuaj tua kab mob; sis; Ionic kua; Organic Bases; Synthetic Reagents |
| Mol File: | 10424-65-4.mol |
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| Tetramethylammonium hydroxide pentahydrate Cov Khoom Siv Tshuaj |
| Melting point | 67-70 degree (lit.) |
| ceev | 1.829 |
| vapor ceev | 1.1 (vs huab cua) |
| vapor siab | 97 hli Hg (20 degree) |
| cia temp. | 0-6 degree |
| daim ntawv | Hygroscopic Crystals |
| xim | Dawb |
| tsw | Ammonia zoo li |
| tawg txwv | 36% |
| Dej Solubility | soluble |
| rhiab heev | Huab cua Sensitive & Hygroscopic |
| Merck | 14,9224 |
| BRN | 3714235 |
| Kev ruaj ntseg: | ruaj khov. Incompatible nrog muaj zog oxidizing neeg sawv cev, muaj zog acids. |
| InChIKey | MYXKPFMQWULLOH-UHFFFAOYSA-M |
| CAS DataBase Reference | 10424-65-4(CAS DataBase Reference) |
| EPA Tshuaj Registry System | Methanaminium, N, N, N-trimethyl-, hydroxide, pentahydrate (10424-65-4) |
| Cov ntaub ntawv kev nyab xeeb |
| Hazard Codes | T,C |
| Risk Statements | 24/25-34-44-20/21/22 |
| Cov lus hais txog kev nyab xeeb | 26-36/37/39-45 |
| RIDADR | UN 3423 8/PG 2 |
| WGK Germany | 1 |
| RTECS | PIB 0875000 |
| F | 3-34 |
| Autoignition Kub | 878 degree F |
| TSCA | Yog lawm |
| HazardClass | 8 |
| PackingGroup | II |
| HS Code | 29239000 |
| MSDS Cov Ntaub Ntawv |
| Tus kws kho mob | Lus |
|---|---|
| Tetramethylammonium hydroxide pentahydrate | Lus Askiv |
| ACROS | Lus Askiv |
| SigmaAldrich | Lus Askiv |
| ALFA | Lus Askiv |
| Tetramethylammonium hydroxide pentahydrate Siv Thiab Synthesis |
| Cov ntsiab lus | Tetramethylammonium hydroxide (TMAH) yog lub hauv paus muaj zog tshaj plaws, nws tsis muaj xim, tsis muaj ntxhiab. Vapor siab tsis tshua muaj nyob rau hauv chav tsev kub, nws tuaj yeem decompose thiab vaporize ntawm 135 ~ 145 degree, cov khoom purity siab tsis muaj qhov seem seem los ntawm kev kho kub qis ntawm 140 degree. Tetramethylammonium hydroxide tov yog xim tsis muaj xim thiab pob tshab nrog micro tsis hnov tsw ntawm ammonia, PH tus nqi ntawm 1 (wt)% tov yog 12.9, nws muaj zog alkali uas muaj zog sib npaug nrog caustic alkali. Cov tshuaj tetramethylammonium hydroxide aqueous yog concentrated nyob rau hauv lub siab txo kom tau tsib siv lead ua dej absorbent koob zoo li crystals (mp, 63 degree), ces nws tseem dewatering mus rau hauv peb siv lead ua dej ntawm crystallization (mp, 63 degree), ces nws hloov mus rau hauv ib tug crystal. dej ntawm tetramethylammonium hydroxide, ntawm 135 ~ 140 degree, nws tuaj yeem decompose rau hauv trimethylamine thiab dimethyl ether. |
| Siv | Tetramethylammonium hydroxide yog lub hauv paus organic, nws muaj ntau yam kev siv hauv kev lag luam kev tshawb fawb. Hauv tsev tetramethylammonium hydroxide feem ntau yog siv los ua cov khoom siv silicon, xws li cov catalyst ntawm synthesizing silicone roj, silicone roj hmab, silicone resin, txawm tias tus nqi tsis loj, tab sis cov txiaj ntsig thiab kev ua tau zoo ntawm cov khoom cuam tshuam zoo heev. Txawv teb chaws tetramethylammonium hydroxide feem ntau yog siv rau polyester-based polymers, textiles, plastics, zaub mov, tawv, ntoo ua, electroplating, thiab lwm yam kab mob. Tam sim no, cov khoom no tau nkag mus rau hauv cov thev naus laus zis thev naus laus zis, xws li hauv kev tsim hluav taws xob hluav taws xob thiab cov ntaub ntawv microscopic, nws tuaj yeem siv los ua tus neeg saib xyuas hauv kev sib xyaw ua ke thiab anisotropic etchant hauv semiconductor microfabrication technology ntawm Si-SiO2 interface. Nrog rau txoj kev loj hlob ntawm kev tshawb fawb thiab thev naus laus zis, qhov yuav tsum tau muaj ntawm cov tshuaj no yog nce, qhov zoo thiab qhov ntau ntawm tetramethylammonium hydroxide tau muab tso rau hauv kev xav tau ntau dua. Nws tuaj yeem siv los ua cov khoom ntxiv ntawm silicone roj hmab, methyl silicone roj thiab polarographic tsom xam reagents. Nyob rau hauv cov nqe lus ntawm organosilicone, nws yuav siv tau raws li catalyst ntawm dimethyl silicone roj, phenylmethyl silicone roj, silicone roj diffusion twj tso kua mis, hnyav-free silicone molding compound, silicone resin, silicone roj hmab los yog lwm yam. Hauv kev tshuaj xyuas, nws tuaj yeem siv los ua tus neeg saib xyuas polarography, hauv kev ua kom huv ntawm cov khoom nws tuaj yeem siv los ua cov khoom tsis yog grey rau precipitate ntau cov hlau, nws tuaj yeem siv ua silicon computer lub ntsej muag brightener, ntxuav cov neeg ua haujlwm thiab cov zoo li engraved kov. hauv kev tsim cov organic silicon. Qhov kom zoo dua ntawm tetramethylammonium hydroxide raws li catalyst yog tias tom qab cov tshuaj tiv thaiv thaum tshav kub, nws tuaj yeem decompose rau hauv roj thiab ploj, thiab nws tsis nyob hauv cov khoom. |
| kev npaj | Nws muaj ntau txoj kev npaj ntawm tetramethylammonium hydroxide, nyiaj oxide txoj kev feem ntau yog siv, nws yog tsim los ntawm cov tshuaj tiv thaiv ntawm tetramethylammonium chloride nrog nyiaj oxide. Txawm li cas los xij, txoj kev npaj ntawm tetramethylammonium hydroxide yog cov txheej txheem nyuaj, cov khoom noj ntawm cov nyiaj oxide yog kim, thiab cov khoom tsim muaj cov impurity ions ntau dua, xws li halide ions, alkali hlau ions, rau catalytic polymerization ntawm organosilicon monomers, nws muaj hnyav heev. cov nyhuv ntawm silicone cov khoom nta, thiab nws tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua rau kev tu thiab corrosion hauv hluav taws xob. Los ntawm lub seventies, txawv teb chaws pib siv cov cuab yeej tshiab ntawm electrolytic txoj kev los npaj tetramethylammonium hydroxide, thiab txoj kev no maj mam hloov cov nyiaj oxide txoj kev. Electrolytic txoj kev muaj cov khoom zoo dua qub, tus nqi qis, nws tsis tsuas yog ua tau raws li cov kev xav tau ntawm kev tsim cov organic silicon, tab sis kuj tau nkag mus rau hauv kev lag luam hluav taws xob. Cov ntaub ntawv saum toj no yog kho los ntawm chemicalbook ntawm Wang Xiaodong. |
| Cov txheej txheem piav qhia ntawm electrolysis | 1. Tetramethylammonium chloride ua raw khoom Lub hauv paus ntsiab lus yog tias tetramethyl ammonium chloride aqueous tov nyob rau hauv lub electrolytic cell ntawm anode compartment nyob rau hauv qhov kev txiav txim ntawm hluav taws xob quab yuam, cov tshuaj chloride ions nyob rau hauv cov tshuaj migrate mus rau lub anode thiab tawm ntawm chlorine tso rau ntawm lub anode. Meanwhile, txij li thaum lub ion-exchange membrane xaiv permeability, chloride diffusion tsis tuaj yeem mus los ntawm ion-exchange membrane, tsuas yog tetramethylammonium ions tuaj yeem xaiv thiab nkag mus rau hauv lub cathode compartment, thiab enriched nyob rau hauv. Cov dej molecules hauv electrolytic cell ntawm cathode compartment tuaj yeem decompose rau hauv hydrogen thiab hydroxyl ions. Cov tom kawg yog ua ke nrog tetramethylammonium ions los ntawm lub anode chamber rau tetramethylammonium hydroxide. Nrog rau qhov nce ntawm hluav taws xob, qhov concentration ntawm tetramethylammonium hydroxide txuas ntxiv txhim kho kom ua tiav qhov xav tau kawg ntawm cov roj av. Anodic electrochemical cov tshuaj tiv thaiv yog: (CH3) 4NCL → (CH3) 4N ++ Clˉ 2Clˉ-2e → Cl2 ↑ Cathodic electrochemical cov tshuaj tiv thaiv yog: H2O → H + + OHˉ (CH3) 4N ++ OHˉ → (CH3) 4NOH 2H ++ 2e → H2 ↑ Tag nrho cov tshuaj tiv thaiv yog: 2 (CH3) 4NCl + 2H2O → 2 (CH3) 4NOH + H2 ↑ + Cl2 ↑ Cov khoom siv hydrogen ntawm electrolysis yog vented, ua rau cov tshuaj chlorine absorbed nrog lye los tsim sodium hypochlorite, sodium hypochlorite yog cov khoom siv tseem ceeb ntawm cov tshuaj dawb. Yog li, txoj kev npaj no ntawm tetramethylammonium hydroxide yog qhov yooj yim, siab purity, thiab tsis muaj kuab paug ib puag ncig. 2.Tetramethyl-ammonium bicarbonate ua cov khoom pib Txoj kev xav ntawm electrolysis zoo ib yam nrog tetramethylammonium chloride ua raw khoom, tab sis cov tshuaj chlorine tsis tuaj yeem tsim nyob rau hauv txoj kev no, carbon dioxide thiab oxygen tsim ntawm anode. Tag nrho cov tshuaj tiv thaiv: (CH3) 4NHCO3 + H2O (CH3) 4NOH + CO2 ↑ + H2 ↑ |
| Cov khoom siv tshuaj | Nws yog cov xim tsis muaj xim (feem ntau nrog peb, tsib siv lead ua dej, thiab lwm yam), nws tuaj yeem nqus dej noo hauv huab cua tau sai sai nqus carbon dioxide, nws tuaj yeem decompose rau hauv methanol thiab trimethylamine ntawm 130 degree, nws feem ntau muaj 10%, 25% dej (los yog cawv) aqueous tov thiab muaj crystal compound. |
| Chemical Properties | moist dawb crystals nrog amine tsw |
| Siv | Tetramethylammonium hydroxide pentahydrate tau siv nyob rau hauv kev tshawb fawb los soj ntsuam cov kab mob ntawm Pseudomnas hom los ntawm ib theem roj chromatographic characterization txheej txheem. Nws kuj tau siv rau hauv txoj kev tshawb fawb los tshawb xyuas cov khoom siv hauv xeev hlau hydride roj teeb nickel oxyhydroxide-hlau hydride thiab manganese dioxide-hlau hydride. |
| Siv | Tetramethylammonium Hydroxide Pentahydrate yog ib qho tseem ceeb rau kev npaj gamma-cesium lead iodide films rau high-efficiency sib sib zog nqus-liab teeb-emitting li. |
| Siv | Tetramethylammonium hydroxide pentahydrate yog clathrate hydrate, uas qhia tau hais tias muaj zog proton conductivity. Nws tuaj yeem nqus cov pa roj carbon dioxide. Nws yog ib tus neeg sib tw zoo rau cov khoom siv hluav taws xob, kev sib cais roj, thiab kev siv roj cia. Tetramethylammonium hydroxide pentahydrate tuaj yeem siv rau hauv kev npaj mesoporous molecular sieve uas yog MCM-41 (mobil muaj pes tsawg leeg ntawm cov teeb meem No. 41) qeb nrog silica rau (tetrahedral) txhuas piv qis li 8.5: 1. |
| Kev piav qhia dav dav | Tetramethylammonium hydroxide pentahydrate yog clathrate hydrate, uas qhia tau hais tias muaj zog proton conductivity. Nws tuaj yeem nqus cov pa roj carbon dioxide. Nws yog ib tus neeg sib tw zoo rau cov khoom siv hluav taws xob, kev sib cais roj, thiab kev siv roj cia. |
| Txoj Kev Purification | Nws tau tso tawm los ntawm cov tshuaj chloride ions los ntawm kev dhau los ntawm kab sib pauv ion (xws li Amberlite IRA-400, npaj rau hauv nws daim ntawv OH los ntawm kev dhau 2M NaOH kom txog thaum cov dej tsis muaj chloride ions, ces ntxuav nrog distilled H2O kom txog thaum nruab nrab. ). Kev hloov kho, kom tau txais carbonate-dawb hydroxide, siv cov txheej txheem ntawm Davies thiab Nancollas [ Xwm 165 237 1950]. [Beilstein 4 IV 145.] |
| Tetramethylammonium hydroxide pentahydrate Kev npaj cov khoom thiab cov ntaub ntawv raw |
| Cov khoom npaj | Di-tert-butyl dicarbonate |
Cim npe nrov: Tuam Tshoj tetramethylammonium hydroxide pentahydrate, Tuam Tshoj tetramethylammonium hydroxide pentahydrate manufacturers, lwm tus neeg, Hoobkas
Tom ntej: N, N-Dimethylaminobutane
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