Tetrahydrofuran (THF): Say Dakel so Uusaren ya Backbone na Precision Chemical Processes
Aralem ya Panangusisa ed Saray Pisikokemikal ya Kablian
Nikadkaduman Arkitektura na Molekula
Say istruktura na THF et tugyopen na cyclic ether ring ya walay oxygen atom to, ya manggagawa na onggendan iran manunan attributes:
Polar Solvency: Say dipole moment ya 2.75 D et mamasarag na hydrogen bonding ed saray polar molecules legan ya mansolvate na nonpolar compounds panamegley na induced dipole interactions, kanian saya so sankaabigan parad nanduruman sistema na reaksion.
Ring Reactivity: Say ether ring et ondalan ed acid-catalyzed ring-opening, ya mamapasimpli ed saray reaksion a singa say alkylation tan polymerization. Sayan reaktibo et importante ed panaggawa na saray polimer a singa say polytetramethylene ether glycol (PTMEG).
Saray Pisikal ya Katangian
Thermal Stability: No manbukal ed 66°C tan manyelo ed -108.5°C, say THF et mansiansian likido ed nanduruman temperatura, ya matukoy parad saray reaksion ed abeban temperatura tan maples ya proseso na panag-evaporation.
Transport Properties: Say abeban viscosity (0.55 mPa·s) tan atagey ya surface tension (26.4 mN/m) so mamaaligwas ed pakayari ton manbasa, ya importante ed panaglinis tan panag-coating.
Safety Note: Maples ya napoolan (flash point -17.2°C) tan manporma na eksplosibo iran mixture ed dagem (1.8–12.4% vol), ya kaukolan so istrikton paraan pian naprebentaan so pool.
Saray Manunan Aplikasyon ed Amin ya Industriya
Panaggawa na Polimer tan Resin
Polyurethane (PU) Synthesis:
PTMEG Production: Say THF so manunan materyales parad panaggawa na polytetramethylene ether glycol (PTMEG), sakey a manunan soft segment ed spandex fibers tan thermoplastic polyurethanes (TPUs). Masulok ya 90% na THF ed interon mundo so uusaren ed sayan sektor, tan kada tonelada na spandex et mankaukolan na ~0.8 tonelada na THF.
PU Adhesives: No inlaok ed DMF, say THF et manggagawa na maples ya onmamaga tan atagey so solidon adhesives parad sapatos tan loob na luluganan, ya mangiyoopresi na 35% ya solido tan 40% ya mas maples ya onmamaga nen saray puron DMF systems.
Epoxy tan Synthetic Resins:
Bilang co-solvent ed saray epoxy formulations, say THF et mamaaligwas ed miscibility tan mamapaabeba ed viscosity, ya mamapawala na eksakton aplikasyon na coating ed electronics tan aerospace.
Organic tan Specialty Chemistry
Reaksyon nen Grignard:
Say THF et mamapabiskeg ed saray organometallic intermediates (alimbawa, RMgX) diad panamegley na koordinasyon ed saray magnesium ions, ya mamaaligwas ed reaction yields na 15-20% no ikompara ed diethyl ether. Alimbawa: Diad panaggawa na ibuprofen, say THF-based Grignard steps et makadampot na ≥99.5% ya kalinisan ya walay ≤0.3% ya byproducts.
Lithium Battery Electrolytes:
Say THF et mamaaligwas ed konduktibidad na lithium hexafluorophosphate (LiPF₆)-based electrolytes (≥10 mS/cm), ya mamaaligwas ed bilay na siklo na masulok ya 1,000 a danay (capity retention ≥85%) ed saray lithium metal ya baterya.
High-Tech tan Specialty Fields
Panlinis na Semiconductor: Say THF et mangekal na saray residue na photoresist ed panaggawa na microelectronics, ya makadampot na metal ion contamination ≤10 ppb parad sub-14 nm ya proseso.
Pharmaceutical Crystallization: Uusaren ed panag-recrystallize na antibiotics tan steroids, saray sistema na THF-water et mamawala na pareparehon kristal (50-200 μm) ya walay ≥99.9% ya kalinisan.
Pangala na Natural a Produkto: Mapilin natunaw iray lipophilic compound (alimbawa, CBD, paclitaxel) ya 25% so mas atagey a kalinisan to nen saray nonpolar solvents, legan ya babawasan so thermal degradation panamegley na low-temperature processing.
Saray detalye
| Ngaran na Produkto | Propionic Acid | |||||||||
| Pormula na Kemikal | C3H6O2 | |||||||||
| Belat na Molekula | 74.08 g/mol | |||||||||
| Itsura | Anggapoy kolor ya malinew ya likido | |||||||||
| Punto na Pantunaw | -20.8°C | |||||||||
| Punto na Pabukal | 141.1°C | |||||||||
| Densidad | 0.993 g/cm3 | |||||||||
| CAS NO | 79 - 09 - 4 | |||||||||
| HS Code | 29155000 | |||||||||
| EINECS NO | 201 - 176 - 3 | |||||||||
| Aplikasyon | Uusaren ed plastik, tambal, kakanen, solvent tan pabalingit | |||||||||
Quality Control Sheet
| Ngaran na Produkto | Propionic Acid | ||||||
| BENGATLA | STANDARD VALUE(%) | TEST VALUE(%) | |||||
| Propionic Acid Content, w/%≥ | 99.5 | 99.9 | |||||
| Density(20/20°C) | 0.993-0.997 | 0.996 | |||||
| Say Lawak na Pabukal/°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 | |||||
| mainomay ya oxidize, w/%≤ | ≤0.05 | 0.01 | |||||
| Pb mg/kg≤ | 2.0 | ≤2.0 | |||||
| Bilang mg/kg≤ | 3.0 | ≤3.0 | |||||
| Konklusyon | Tumboken iray estandarte na GB 1886.210-2016 | ||||||
Saray Konsideraen ed Kaligenan tan Saray Pananguman ed Industriya
Peligro ed Salud tan Kaliberliber
Toxicity: Say pan-inhale na atagey a konsentrasyon (>500 ppm) et nayarin pansengegan na CNS depression; say andukey ya pakapatnagan et nayarin mangapekta ed kimey na altey/bato. Kaukolan so proteksion ed panag-ehersisyo (APF≥10) tan gwantis ya ag-onloob na kemikal.
Epekto ed Kaliberliber: Nabulok ed dalin (half-life ≤5 agew) balet makasamal ed saray ayayep ed danum (LC50 fish=110 mg/L). Say marutak a danum et kaukolan ya ondalan ed advanced treatment (COD≤50 mg/L) antis ya ipaway.
Saray Ebat ed Regulasyon tan Teknikal
Grado na Kalinisan:
Industrial (≥99%): Parad inkalapagan a panaggawa, mangiiter na ≤0.5% a danum/aldehydes.
Electronic (≥99.9%): Metal ions ≤1 ppb, SEMI C8-compliant parad pangusar na semiconductor.
Parmasyutiko (≥99.5%): Inaprobaan na FDA, aldehydes ≤10 ppm parad panaggawa na tambal.
Sankamundoan ya Panumbok:
EU REACH: Limitaan ed saray materyales ya makapitongtong ed naakan (migration ≤0.05 mg/kg).
US OSHA: PEL-TWA 200 ppm (590 mg/m3), ya kaukolan ya bantayan so dagem ed pantratrabahoan.
Akin et Pilien so THF Tayo?
Ag-ontutundan Kalinisan: Say maaligwas ya proseso na triple-distillation et mamawala na electronic-grade THF ed 99.99% ya kalinisan, ya walay ≤10 ppm ya danum tan ≤1 ppm ya aldehydes, ya mangiseguro na batch-to-batch ya inkapara (variation ≤±0.02%).
Custom Solutions: Saray ginawan pormulasyon parad karakel na danum (50-1000 ppm), lebel na peroxide (≤10 ppm), tan pH (5.0-7.0), singa say low-peroxide THF parad sensitibon panaggawa na tambal.
Safety-Driven Logistics: Say nitrogen-blanketed storage tan explosion-proof transport systems et mamaseguro na ligtas ya panag-asikaso manlapud produksyon anggad pangiter.
Regulatory Agility: Say sankamundoan ya panumbok ed saray estandarte na SEMI, ACS, tan FDA, ya susuportaan na na-customize ya MSDS parad ag-ontutundan iloob ed tindaan.
Pankakasakey parad Kemical Excellence
Say nikadkaduman balanse na solvency, reactivity, tan proseso na adaptabilidad na THF so mangipapasen ed satan bilang manunan bato ed modernon chemistry. Say pangiter mi na saray produkton atagey so puro to, teknikal ya inobasyon, tan panumbok ed saray totontonen so mangiiter na pakayari ed saray kustomer ed plastik, elektroniko, tan parmasyutika pian responsablen makapanggawa na saray pananguman. Pilien so THF mi pian na-unlock so inkasusto, performance, tan sustainability ed kada aplikasyon.