Tetrahydrofuran (THF): Ing Versatile Backbone ning Precision Chemical Processes
Malalam a Pamagsuri kareng Physicochemical a Katangian
Makatagulaling a Arkitektura ning Molekula
Ing istruktura ning THF metung yang cyclic ether ring a maki oxygen atom, a gagawang makatuking key attributes:
Polar Solvency: Ing dipole moment a 2.75 D papalyarian na ing hydrogen bonding kareng polar molecules kabang magsolvate yang nonpolar compounds kapamilatan ning induced dipole interactions, gagawan neng masanting para kareng miyayaliwang reaction systems.
Ring Reactivity: Ing ether ring dumalan ya keng acid-catalyzed ring-opening, a magpadali kareng reaksyun antimo ing alkylation ampo polymerization. Ing reactivity ayni importanti ya para keng pamaglalang polymers antimo ing polytetramethylene ether glycol (PTMEG).
Katangian ning Katawan
Thermal Stability: Pamagbukal keng 66°C ampo pamagyelo keng -108.5°C, ing THF manatili yang likidu keng malawak a temperatura, masanting para kareng mababang temperatura a reaksyun ampo mabilis a prosesu ning pamagsingaw.
Transport Properties: Ing mababang viscosity (0.55 mPa·s) ampo ing matas a surface tension (26.4 mN/m) papaslag ne ing kayang wetting ability, kritikal para keng pamaglinis ampo pamag-coating.
Safety Note: Mabilis yang masilab (flash point -17.2°C) at gagawang explosive mixtures keng angin (1.8–12.4% vol), mangailangan yang mahigpit a paralan ning pamag-iwas keng api.
Key Applications keng mabilug a industriya
Pamaglalang Polymer ampo Resin
Polyurethane (PU) Synthesis:
PTMEG Production: Ing THF ing mumunang raw material para keng pamaglalang polytetramethylene ether glycol (PTMEG), metung yang susi a malambut a segment kareng spandex fibers ampo thermoplastic polyurethanes (TPUs). Maygit 90% ning global THF ing gagamitan da keng sector ayni, nung nukarin ing balang toneladang spandex mangailangan yang ~0.8 toneladang THF.
PU Adhesives: Misamut ya keng DMF, ing THF gagawang mabilis a matuling, matas a solidu a adhesives para kareng sapatus ampo keng kilub ning saken, atin yang 35% solids a laman ampo 40% mas mabilis a matuling kesa kareng purong DMF systems.
Epoxy ampo Synthetic Resins:
Bilang co-solvent kareng epoxy formulations, ing THF papasanting ne ing miscibility ampo babawasan na ing viscosity, a magpasya kareng eksaktung coating applications keng electronics ampo aerospace.
Organic at Specialty Chemistry
Grignard Reactions:
Ing THF papatatag ne ing organometallic intermediates (eg, RMgX) kapamilatan ning pamakipag-ugnayan kareng magnesium ions, a magpatas king reaction yields king 15-20% kumpara king diethyl ether. Alimbawa: Ing ibuprofen synthesis, ing THF-based Grignard steps miras yang ≥99.5% a kalinisan a maki ≤0.3% a byproducts.
Lithium Battery Electrolytes:
Ing THF papaslag ne ing conductivity ning lithium hexafluorophosphate (LiPF₆)-based electrolytes (≥10 mS/cm), papaslag ne ing cycle life angga king maigit 1,000 a besis (capacity retention ≥85%) kareng lithium metal a baterya.
High-Tech ampo Specialty Fields
Pamaglinis kareng Semiconductor: Ing THF lalako nala reng photoresist residues keng microelectronics manufacturing, para akit na ing metal ion contamination ≤10 ppb para kareng sub-14 nm a prosesu.
Pharmaceutical Crystallization: Gagamitan ya keng pamag-recrystallize kareng antibiotics ampo steroids, ing THF-water systems magbunga yang pare-pareung kristal (50-200 μm) a maki ≥99.9% a kalinisan.
Natural Product Extraction: Selectively dissolves lipophilic compounds (alimbawa, CBD, paclitaxel) na 25% mas matas a purity kesa kareng nonpolar solvents, habang babawasan na ing thermal degradation kapamilatan ning low-temperature processing.
Detalyadu
| lagyu ning produktu | Propionic Acid | |||||||||
| Chemical Formula | C3H6O2 | |||||||||
| Timbang Molecular | 74.08 g/mol | |||||||||
| It sira | alang kule a transparent a likidu | |||||||||
| Melting Point | -20.8°C | |||||||||
| Boiling Point | 141.1°C | |||||||||
| Bayat | 0.993 g/cm3 | |||||||||
| CAS NO | 79 - 09 - 4 | |||||||||
| HS Code | 29155000 | |||||||||
| EINECS NO | 201 - 176 - 3 | |||||||||
| Aplikasyon | Magamit ya keng plastic, pharma, pamangan, solvent ampo pabanglu | |||||||||
Quality Control Sheet
| lagyu ning produktu | Propionic Acid | ||||||
| GAMIT | STANDARD VALUE(%) | TEST VALUE(%) | |||||
| Propionic Acid Content, w/%≥ | 99.5 | 99.9 | |||||
| Density(20/20°C) | 0.993-0.997 | 0.996 | |||||
| Boiling Range/°C | 138.5-142.5 | 139.4-141.1 | |||||
| Evaporation residue,w/%≤ | 0.01 | 0.006 | |||||
| Danum,w/%≤ | 0.15 | 0.02 | |||||
| Aldehyde,w/%≤ | ≤0.05 | 0.04 | |||||
| madaling oxidization, w/%≤ | ≤0.05 | 0.01 | |||||
| Pb mg/kg≤ | 2.0 | ≤2.0 | |||||
| antimong mg/kg≤ | 3.0 | ≤3.0 | |||||
| Katuntunan | Tuki kareng pamantayan ning GB 1886.210-2016 | ||||||
Pamagkonsidera king Kaligtasan at Pamagbayu king Industriya
Peligro king Kalusugan at Kapaligiran
Toxicity: Ing pamangisnawa kareng matas a konsentrasyun (>500 ppm) malyari yang maging sangkan ning CNS depression; ing makabang panaun a pangabaldug malyari yang makaapektu keng ate/batu. Kailangan ing proteksyun keng pamangisnawa (APF≥10) ampo ing chemical-resistant gloves.
Epekto keng kapaligiran: Biodegradable keng gabun (half-life ≤5 aldo) pero makalasun keng aquatic life (LC50 fish=110 mg/L). Ing wastewater kailangan yang dumalan keng advanced treatment (COD≤50 mg/L) bayu ya mipalabas.
Regulatory ampo Technical a pakibat
Purity Grades:
Industrial (≥99%): Para keng pangkabilugan a pamaglalang, paintulutan ing ≤0.5% a danum/aldehydes.
Electronic (≥99.9%): Metal ions ≤1 ppb, SEMI C8-compliant para keng semiconductor a gamit.
Pharmaceutical (≥99.5%): FDA-approved, aldehydes ≤10 ppm para keng pamaglalang panulu.
Global Compliance:
EU REACH: Limitadu ing pamangan a maki kaugnayan kareng materyales (migration ≤0.05 mg/kg).
US OSHA: PEL-TWA 200 ppm (590 mg/m3), mangailangan yang pamagmonitor keng angin keng obra.
bakit pilinan ing ating THF?
Uncompromiseing Purity: Deng advanced a prosesu ning triple-distillation magbunga lang electronic-grade THF keng 99.99% a kalinisan, a maki ≤10 ppm a moisture ampo ≤1 ppm a aldehydes, a makasiguradung batch-to-batch consistency (variation ≤±0.02%).
Custom Solutions: Tailored formulations para keng laman ning danum (50-1000 ppm), peroxide levels (≤10 ppm), ampo pH (5.0-7.0), antimo ing low-peroxide THF para kareng sensitibong pharmaceutical syntheses.
Safety-Driven Logistics: Ing nitrogen-blanketed storage ampo ing explosion-proof transport systems makasiguradung ligtas ing pamag-handle manibat keng produksyun angga na keng pamagdeliver.
Regulatory Agility: Global compliance kareng SEMI, ACS, ampo FDA standards, suportado ning customizable MSDS para keng seamless a pamaglub keng palengki.
Pamakipagpartner para keng Chemical Excellence
Ing THF's makatagulaling a balansi ning solvency, reactivity, ampo process adaptability ing magposisyun kaya bilang metung a pundasyun keng modernung chemistry. Ing kekaming pangaku kareng high-purity a produktu, technical innovation, ampo regulatory compliance mamye yang upaya kareng customer keng plastics, electronics, ampo pharmaceuticals para mag drive lang breakthroughs a responsabli. Pilinan me ing kekaming THF para a-unlock ing precision, performance, ampo sustainability keng balang application.