Dimethyl carbonate

Dimethyl carbonateTxheej txheem cej luam

Dimethyl carbonate, abbreviated li DMC, CAS No .: 616-38-6, molecular formula: (\\boldsymbol{C_3H_6O_3}), yog ib qho ntsuab, tsis muaj tshuaj lom neeg cov khoom noj. Nws cov molecule muaj methyl, methoxy, thiab carbonyl ua haujlwm pab pawg, ua rau nws hloov tau cov tshuaj lom ntau heev xws li phosgene thiab dimethyl sulfate ua tus neeg sawv cev methylating lossis carbonylating. Nws tseem tuaj yeem ua cov kuab tshuaj ib puag ncig thiab ua cov kuab tshuaj hauv lithium-ion roj teeb electrolytes. Nyob rau hauv chav tsev kub, nws zoo nkaus li tsis muaj xim, pob tshab kua nrog ib tug faint aromatic tsw; nws pom muaj zog daws lub zog thiab yog VOC-phooj ywg, txawm hais tias nws qhov qis flash point cais nws raws li cov kua hluav taws xob. Tam sim no, thawj daim ntawv thov hauv qab yog nyob rau hauv lub zog tshiab lithium-ion roj teeb electrolytes, thaum nws kuj tau siv dav hauv polycarbonate synthesis, coatings thiab inks, tshuaj thiab agrochemical intermediates, nplaum, thiab lwm yam kev lag luam, ua rau nws yog ib qho tseem ceeb raw khoom rau ob qho tib si lub zog tshiab thiab cov tshuaj zoo.

Basic Parameters

qhov project	ntsuas
tshuaj npe	Dimethyl carbonate (DMC)
CAS nr	616-38-6
EINECS No.	210-478-4
Cov mis mos molecular	\\(\\boldsymbol{C_3H_6O_3}\\),structure\\((CH_3O)_2CO\\)
formula hnyav	90.08
Sab nraud tsos	Cov xim tsis muaj xim, pob tshab, cov kua ntshiab nrog cov ntxhiab tsw me ntsis
Ceev (20 degree)	1.069-1.075 g / cm³
melting point	2-4 degree
kub point	90.2 degree
Flash point (lub khob kaw)	Kwv yees li ntawm 17℃(flammable; raug rau qhov tseem ceeb tswj)
Refractive Index \\(n_D^{20}\\)	1.3697
solubility	me ntsis soluble hauv dej; miscible nrog cov kuab tshuaj organic xws li methanol, ethanol, ketones, thiab esters; tsim azeotropes nrog methanol.
Vapor siab (20 degree)	Kwv yees li 3.3 kPa
kev faib cov kev pheej hmoo	Flammable kua, UN 1161

Cov txheej txheem ntau lawm

Tuam Tshoj txoj kev lag luam kev lag luam tseem ceeb yog cov txheej txheem sib pauv ester, nrog kev sib koom me me uas siv methanol oxidative carbonylation; cov txheej txheem phosgene ib txwm muaj (muaj tshuaj lom heev) tau raug txiav tawm.

Transesterification (txoj kev loj hauv Suav teb): propylene oxide (PO) thiab ethylene oxide (EO) yog thawj zaug nrog CO₂ los ua propylene carbonate (PC) lossis ethylene carbonate (EC), uas tom qab ntawd raug rau transesterification nrog methanol. Qhov tshwm sim dimethyl carbonate (DMC) yog tau los ntawm fractional distillation, nrog propylene glycol ua cov khoom lag luam. Ethylene glycol. Qhov zoo: cov ntaub ntawv raw khoom tau yooj yim, cov txheej txheem paub tab, kev nyab xeeb zoo dua piv rau oxidative carbonylation, thiab tsim nyog rau cov khoom loj; Qhov tsis zoo: DMC tsim ib qho azeotrope nrog methanol, ua rau muaj kev sib cais siab zog noj thiab peev peev ntau hauv cov khoom siv distillation.

Methanol Oxidative Carbonylation: Methanol, CO, thiab cov pa oxygen ncaj qha hloov mus rau hauv DMC nyob rau hauv muaj lub catalytic system. Qhov zoo: zoo heev atom kev lag luam thiab tsis muaj by-product ntawm diols; Qhov tsis zoo: Cov kev cai CO nruj me ntsis, qhov yuav tsum tau muaj pov thawj tawg, thiab kev ua kom tsis muaj zog; Tuam Tshoj txoj kev sib koom ntawm kev tsim muaj peev xwm tseem tsawg.

Ntxiv: Lithium-battery-qib DMC, raws li cov khoom siv raw, ua tiav cov txheej txheem ntxiv nrog rau kev txiav txim siab fractional distillation, adsorption-raws li dej tshem tawm, hlau-ion tshem tawm, thiab particle filtration, nrog kev tswj nruj ntawm noo noo, acidity, thiab hlau impurities.

Qib khoom

qib	Qhov taw qhia tseem ceeb	Tej kev siv
Industrial-qib (general-purpose)	Purity Ntau dua lossis sib npaug rau 99.5%, noo noo Tsawg dua lossis sib npaug li 0.1%	Coatings, inks, adhesives, general organic synthesis, polycarbonate raw khoom
Hwm Qib Industrial	Purity Ntau dua lossis sib npaug li 99.9%, cov ntsiab lus tsis muaj dej noo, thiab tswj tau acidity	Cov tshuaj zoo, tshuaj tua kab nruab nrab, cov tshuaj tsis yog hluav taws xob hluavtaws
Roj teeb-qib (lithium-ion electrolyte)	Purity Ntau dua lossis sib npaug li 99.99%; cov dej noo tsawg dua lossis sib npaug ntawm 10-30 ppm; Tsawg hlau ion ntsiab lus, tsis tshua muaj acidity, thiab xim tsis tshua muaj xim	Cov kuab tshuaj tseem ceeb rau lithium-ion roj teeb electrolytes (rau cov roj teeb hluav taws xob, lub zog cia, thiab cov neeg siv roj teeb), siv ua ke nrog EMC, DEC, thiab EC
Reagent qib / Pharmaceutical qib	Ultra-siab purity, tsis tshua muaj impurity cov ntsiab lus, thiab cov ntsiab lus tsis tshua muaj hlau hnyav	Pharmaceutical API synthesis, Laboratory reagents, thiab high-end fine intermediates

Lus Cim: DMC qib Industrial muaj qib siab ntawm impurities, noo noo, thiab hlau ions; nws yuav tsum tsis txhob siv ncaj qha rau hauv lithium-ion roj teeb electrolytes. Rau roj teeb-qib DMC, kaw-system, tswj tsis muaj dej noo yuav tsum tau ua raws li tag nrho cov txheej txheem ntawm kev khaws cia, kev thauj mus los, thiab ntim khoom.

Upstream thiab downstream industries

Upstream raw khoom

Ester pauv txoj kev: propylene oxide / ethylene oxide, carbon dioxide, methanol; txhawb catalysts thiab distillation pab; oxidative carbonylation txoj kev: methanol, carbon monoxide, oxygen; Lithium roj teeb-qib cov cuab yeej txhawb nqa: precision distillation, adsorption dehumidification, thiab tsis muaj plua plav pom tshuab. Tuam Tshoj muaj peev xwm ntau lawm rau methanol thiab PO, nrog rau DMC kev lag luam saw pawg concentrated nyob rau hauv Shandong thiab East Tuam Tshoj.

Cov ntawv thov hauv qab

Lithium roj teeb electrolyte (thawj daim ntawv thov downstream): ua cov kuab tshuaj nyob rau hauv electrolytes, dissolves lithium ntsev, thiab yog haum rau lub hwj chim batteries, lub zog cia roj teeb, thiab cov roj teeb digital;

Polycarbonate (PC) synthesis: non-phosgene-based PC core monomer;

Coatings, inks, thiab adhesives: ntsuab kuab tshuaj uas hloov toluene, xylene, thiab acetone, yog li txo VOC emissions;

Pharmaceutical thiab tshuaj tua kab intermediates: ntsuab methylation reagents raws li kev hloov rau dimethyl sulfate;

Lwm yam: roj additives, polyurethane synthesis, thiab tshwj xeeb resin synthesis.

Cov saw hlau muaj: methanol / propylene oxide → DMC chav tsev → crude DMC → distillation purification (ntxiv ultra-ntshiab kev kho mob rau roj teeb-qib daim ntaub ntawv) → electrolyte nroj tsuag, PC nroj tsuag, txheej nroj tsuag, thiab tshuaj tshuaj nroj tsuag.

Kev nyab xeeb, Cia & Tsheb thauj mus los

Dimethyl carbonate yog cov kua ua kua (UN1161); Nws yog volatile heev, thiab nws cov vapors tuaj yeem tsim cov khoom tawg.

Ntim: 200 kg galvanized steel nruas / stainless hlau IBC tonne nruas; roj teeb-qib stainless hlau hermetic ntim nrog nitrogen tiv thaiv;

Cia: Khaws rau hauv qhov chaw txias, qhov cua zoo, tawg-pov thawj warehouse, kom deb ntawm qhov chaw tshav kub, qhib nplaim taws, thiab oxidizing agents; lub warehouse yuav tsum tau nruab nrog ib tug combustible gas tswb thiab cais los ntawm noo noo; roj teeb-qib cov ntaub ntawv yuav tsum tau muab cia rau hauv ib qho kev sib cais, cais qhov chaw kom tiv thaiv kom txhob ya raws;

Kev Thauj Mus Los: Rau kev thauj cov tshuaj lom neeg, cov tsheb thauj khoom yuav tsum tau ua qhov tseem ceeb rau kev tsim kho steel hlau; cov tsheb yuav tsum tau nruab nrog lub hnub tiv thaiv thiab kev tiv thaiv zoo li qub, thiab kev sib xyaw nrog oxidizing cov neeg ua haujlwm lossis cov kua qaub muaj zog yog txwv nruj;

Kev tiv thaiv chaw ua haujlwm: hnav cov hnab looj tes hnyav hnyav, tsom iav kev nyab xeeb, thiab daim npog ntsej muag roj; xyuas kom rhiav qhov cua thiab electrostatic grounding;

Cov lus teb thaum muaj xwm txheej ceev: Nyob rau hauv qhov xwm txheej ntawm cov xau, txiav tawm qhov hluav taws xob thiab nqus cov khoom nrog xuab zeb lossis av; txwv tsis pub tso tawm ncaj qha. Thaum muaj hluav taws kub, siv cov hmoov qhuav, ua npuas ncauj, lossis cov pa roj carbon dioxide tua; txwv tsis pub tso dej ncaj qha mus. Nyob rau hauv rooj plaub ntawm daim tawv nqaij, yaug kom huv si nrog dej huv kom ntau.

FAQ

Q: Dab tsi yog DMC ua si hauv electrolyte?

A: DMC muaj viscosity tsawg thiab solubility zoo; Nws yog feem ntau sib xyaw nrog EC, EMC, thiab DEC kom yaj lithium ntsev thiab txhim kho ionic conductivity; Thaum ua ke nrog ethylene carbonate, uas muaj lub siab dielectric tas li, nws ib txhij ua tiav cov conductivity siab thiab kev ua haujlwm kub qis.

Q: Dab tsi yog qhov kev lag luam zoo ntawm Tuam Tshoj txoj kev lag luam dimethyl carbonate?

A: Tuam Tshoj yog lub ntiaj teb no tus tsim loj tshaj plaws ntawm DMC, nrog ib tug paub tab transesterification txheej txheem, zoo-tsim kev txhawb nqa raw khoom rau methanol thiab propylene oxide, loj ntau lawm muaj peev xwm, thiab ruaj khov chaw muab khoom; nws cov roj teeb-qib purification technology yog paub tab, ua kom ruaj khov rau cov tuam txhab roj teeb lithium; nws muaj lub sijhawm xa khoom luv luv thiab txhawb nqa ob daim ntawv cog lus mus sij hawm ntev thiab chaw xa khoom; 7DCHEM leverages Tuam Tshoj tus tshiab zog tshuaj kev lag luam saw, ntxiv los ntawm txawv teb chaws warehouses, muab cov khoom ruaj khov rau txawv teb chaws electrolyte thiab txheej cov neeg muas zaub.

Q: Koj paub qhov txawv ntawm DMC, EMC, thiab DEC li cas?

A: DMC yog dimethyl carbonate (ob pawg methyl), uas muaj qhov kub siab tshaj plaws thiab qhov viscosity qis tshaj; EMC yog methyl ethyl carbonate, thiab DEC yog diethyl carbonate, ob qho tib si uas muaj cov ntsiab lus kub dua. Peb cov no feem ntau ua ke hauv cov electrolytes sib xyaw.

Cov peev txheej thiab cov ntaub ntawv pov thawj

PubChem, ChemicalBook, ICSC International Chemical Safety Card (CAS 616-38-6)
GB 12268: Code rau Kev thauj mus los ntawm cov tshuaj phem; DMC cov qauv kev lag luam; MSDS los ntawm cov tuam txhab ua lag luam; technical specifications los ntawm electrolyte manufacturers
Daim Ntawv Qhia Txog Kev Lag Luam Carbonate; Lithium roj teeb Electrolyte Raw Khoom Siv Phau Ntawv Qhia
Roj teeb-qib carbonate pawg txheej txheem
Cov ntaub ntawv Scope ceeb toom: Cov txheej txheem huv huv yuav txawv ntawm cov tuam txhab sib txawv; rau roj teeb-qib ya raws thiab cov ntsiab lus hlau, tus neeg muag khoom COA thiab SDS yuav tsum yeej.