Dimethyl Carbonate (DMC): Chemistry nghet tak siamna atana Toxicity hniam, Efficiency sang tak nei Core Material a ni
Physicochemical Properties leh Molecular Insights te a ni a, a hlawhtlinna chu a hlawhtlinna a ni
Structural lama hlawkna a awm
Toxicity hniam: LD5 (oral, rat) 6400 mg/kg a nih chuan DMC hi traditional methylation agents (eg, dimethyl sulfate, LD2 = 140 mg/kg) aiin a him zawk tih a chiang a, hei hi EU REACH regulation on non-persistent organic pollutants zawm a ni.
Reactivity tih theihna: 1.1.
Methylation: Methoxy group (−OCH3 ) hian methyl group transfer him tak a siam a, toxic alternatives a thlak a ni.
Carbonylation: Carbonyl group (−CO−) hian ester exchange leh aminolysis a ti awlsam a, phosgene-free synthesis of polycarbonate a thlawp a ni.
Solvency: Dielectric constant 3.1 a nih chuan DMC hian alcohol, ketone leh ester te nen a inhmeh tha hle a, chutih laiin tuiah (1.6 g/100 mL 20°C-ah) a then a inthiar thei thung.
Taksa Data pawimawh tak tak
DMC hi a boiling point 90.5°C a nih avangin medium-temperature reaction leh solvent recovery atan a tha hle a, benzene-based process aiin 30% in energy a mamawh tlem zawk a ni. A viscosity hniam (0.664 mPa・s) hian lithium battery electrolytes ang chi application-ah flowability a ti sang a, vaporization enthalpy 363 kJ/kg chuan coating leh adhesives te tan drying rates moderate a tichiang bawk. Note: A puak theihna hmun (3.1–20.5% vol) hian 防爆 (puak thei lo) ventilation system a mamawh a ni.
Industrial Application hrang hrang
Green Synthesis hmanga thil thar siam chhuah
Polycarbonate (PC) siam chhuah dan: 1.1.
Phosgene-Free Process: DMC hian transesterification hmangin bisphenol A (BPA) nen an inrem a, diphenyl carbonate (DPC) a siam a, chu chu PC-ah polymerized a ni. Hetiang method hian atom efficiency 92% (vs. traditional phosgene routes tan chuan 65%) ah a tisang a, toxic byproduct te a ti bo bawk.
Product Performance: Resulting PC resins hian ≥90% light transmittance a pe a, heat distortion temperature 135°C a pe a, phosgene-derived PC aiin 10% in impact strength a sang zawk a, electronics casing leh automotive headlamp cover-a hman thin a ni.
Damdawi leh Agrochemicals: 1.1.
Methylation Reactions: Cardiovascular drugs (eg, nifedipine) leh antidepressant (eg, sertraline) siamnaah dimethyl sulfate a thlak a, methanol chu byproduct awmchhun atan 15–20% in yield a ti sang a ni.
Carbonylation hman dan: Carbaryl (pesticide) siamnaah HCl corrosion awm loh nan hman a ni a, hei hian 25% in senso a tihtlem phah a ni.
Energy & Material thar siam chhuah
Lithium Battery hmanga electrolyte awmte chu:
DMC hian ethylene carbonate (EC) leh ethyl methyl carbonate (EMC) nena inzawm hian balanced electrolyte a siam a, ionic conductivity 1.2 mS/cm thleng a nei a ni. Hei hian battery cycle dam chhung chu vawi 1,200 (capacity retention ≥85%) a ti sei a, toxicity tlem zawka EU Battery Regulation (2023/0051) a zawm a ni. Tesla 4680 battery siamnaah pawh hman a ni tawh.
Biodegradable thil chi hrang hrang: 1.1.
Propylene oxide nena copolymerized a, polypropylene carbonate (PPC) siam a nih chuan DMC-based materials hian 40% CO2 a hip lut a, thla 6–12 chhungin a chhe vek a, single-use tableware leh agricultural film-a plastic bawlhhlawh awmte chu a address a ni.
Coatings & Adhesives te pawh a awm bawk
Eco-Friendly Solvents: Automotive OEM paint-a toluene/xylene a thlak a, VOC content ≤50 g/L (GB 24409-2020 standards aia hniam) a nei thei. Drying time chu darkar 2 ah tihhniam a ni a, film hardness chu 2H a tling.
Formaldehyde-Free Adhesives: Furniture panel bonding-a hman thin DMC-based polyurethane adhesives hian free formaldehyde ≤0.01 mg/m3 (E0 grade) a nei a, hei hian IKEA chu kum tin formaldehyde emission ton 500+-a tihtlem nan a pui a ni.
Environment lama thatna & Technical lama harsatna awm thei te
Sustainability chungchanga thil pawimawh tak tak
Atomic Economy: Methanol ang chi byproduct te hi distillation hmanga recycle theih a ni a, hei hian bawlhhlawh tuiah COD load chu traditional process nena khaikhin chuan 70% in a tihtlem phah a ni.
Carbon Capture: Non-phosgene PC synthesis hian carbon footprint 45%-in a tihtlem a, DMC ton khat siam chhuah hian power plant flue gas atanga CO2 ton 0.6 a hmang a, hei hian CCU (carbon capture and utilization) a pui a ni.
Thil thar siamna Frontiers
Cost Reduction: CO2 direct synthesis method (methanol, CO2, leh Pd-based catalyst hmanga) hian raw material senso chu 30%-in a tihtlem a, Sinopec-a pilot plant hian kiloton-scale production a tihlawhtling thei a ni.
Ultra-Purity Solutions: Membrane separation-adsorption technology hian electronic-grade DMC a ti thei a, metal ion ≤1 ppb leh thianghlimna ≥99.999% a nei a, semiconductor tihfai nan SEMI C87 standard a tlin a ni.
Safe Logistics: Microencapsulated DMC (SiO2 nanoshells-a khuh) hian flash point chu 60°C-ah a tisang a, hei hi TÜV Rheinland-in transport safety atan a certified a ni.
A chiang zawk
| Product Hming | Propionic Acid hmanga siam a ni | |||||||||
| Chemical Formula hmanga siam a ni | C3H6O2 a ni | |||||||||
| Molecular Weight a ni | 74.08 g/mol a ni | |||||||||
| Landan | A rawng nei lo transparent liquid | |||||||||
| Melting Point a ni | -20.8°C a ni | |||||||||
| Boiling Point a ni | 141.1°C a ni | |||||||||
| Sakhal zawng | 0.993 g/cm3 a ni | |||||||||
| CAS NO | 79 - 09 - 4 chhung a ni | |||||||||
| HS Code hmanga siam a ni | 29155000 a ni | |||||||||
| EINECS NO | 201 - 176 - 3 ah a awm | |||||||||
| Dilna | Plastic, pharma, ei tur, solvent leh perfume-ah te hman thin a ni | |||||||||
Quality Control Sheet a ni
| Product Hming | Propionic Acid hmanga siam a ni | ||||||
| THIL | STANDARD VALUE (%) a ni. | TEST VALUE (%) a ni. | |||||
| Propionic Acid awm zat, w/%≥ | 99.5 a ni | 99.9 a ni | |||||
| Density(20/20°C) a ni. | 0.993-0.997 inkar a ni | 0.996 a ni | |||||
| Boiling Range/°C a ni | 138.5-142.5 inkar a ni | 139.4-141.1 ah a awm | |||||
| A chhuahna tur hmun,w/%≤ | 0.01 a ni | 0.006 a ni | |||||
| Tui,w/%≤ | 0.15 a ni | 0.02 a ni | |||||
| Aldehyde,w/%≤ hmanga siam a ni | ≤0.05 a ni | 0.04 a ni | |||||
| oxidization awlsam tak,w/%≤ | ≤0.05 a ni | 0.01 a ni | |||||
| Pb mg/kg≤ tih a ni | 2.0 a ni | ≤2.0 a ni | |||||
| mg/kg≤ angin a awm | 3.0 a ni | ≤3.0 a ni | |||||
| Tawpna | GB 1886.210-2016 standard zawm tur a ni | ||||||
Engvangin Nge Kan DMC hi kan thlan?
Core Strength pali a awm
Thianghlimna rintlak:
Triple distillation hmanga kan transesterification kalpui chhunzawm zel hian industrial-grade DMC (≥99.5%) leh electronic-grade (≥99.99%) a pe chhuak a, methanol ≤100 ppm a awm bawk. Case: Kan DMC hmangtu battery customer pakhat chuan first charge-discharge efficiency 98.7% (industry avg. 95%) a nei a.
Customization tih theihna:
Acid value (≤0.001 mgKOH/g), moisture (≤50 ppm), leh peroxides (≤5 ppm) te tan solution siam a ni. Entirnan, acid-sensitive damdawi siamna atan ultra-low acid DMC (0.0005 mgKOH/g) kan siam a.
Circular Economy Model hmanga thil tih dan: 1.1.
Methanol byproduct te chu DMC siamna atan syngas (CO+H2) ah recycle a ni a, hei hian material efficiency 95% a nei a, DMC ton khatah CO2 emission ton 3 in a tihtlem bawk. Bawlhhlawh bungrua chu supercritical CO2 hmangin tihfai a ni a, 95% hman nawn leh theih a ni.
Khawvel pum huapa Dan zawm dan:
GB/T 1628-2020, ASTM D7056, leh JIS K 1551 te zawm a ni a, GHS label leh MSDS te hian regional requirement (eg, India BIS, Brazil INMETRO) a tlin a, darkar 72 chhung customs clearance a awm thei a ni.
Sustainable Chemistry lama hmahruaitu a ni
Dimethyl Carbonate hian a "non-toxic, efficient, and recyclable" attribute hmangin industry te chu a siam thar leh mek a ni. Process thar leh low-carbon solutions kan tiam a, raw material atanga application thlengin end-to-end support kan pe a ni. Kan DMC thlan hian sustainability nena thawhhona a kawk a ni—chutah chuan drop tin hian pollution tihtlem, energy efficiency, leh technological hmasawnna a thlen a, chu chuan greener chemical future a siam dun a ni.