Tetrahydrofuran (THF): Tsofai ni akɛtsuɔ nii pɛpɛɛpɛ lɛ ahe nitsumɔ

Nibii ni yɔɔ gbɔmɔtso lɛ mli lɛ amlipɛimɔ ni mli kwɔ

Molekular Tsumaa He Nilee Krɛdɛɛ
THF gbɛjianɔtoo lɛ ji ether ring ni yɔɔ oxygen atom, ni feɔ sui titrii ni nyiɛ sɛɛ nɛɛ:
Polar Solvency: Dipole be ni ji 2.75 D haa hydrogen kɛ polar molecules lɛ feɔ ekome yɛ be mli ni ekɛ nɔ ni jeee polar lɛ tsuɔ nii kɛtsɔɔ dipole nifeemɔi ni akɛwoɔ mli lɛ nɔ, ni ehaa efeɔ nɔ ni hi jogbaŋŋ kɛha nifeemɔi srɔtoi.
Nibii ni haa mɔ tsui nyɔɔ emli: Ether nibii ni haa mɔ tsui nyɔɔ emli lɛ gbeleɔ, ni ehaa nibii tamɔ alkylation kɛ polymerization feɔ mlɛo. Nɛkɛ nifeemɔ nɛɛ he hiaa waa kɛha nibii ni haa mɔ he jɔɔ lɛ tamɔ polytetramethylene ether glycol (PTMEG) lɛ afeemɔ.

Gbɔmɔtsoŋ Sui
Thermal Stability: Kɛ́ edɔ yɛ 66°C ni edɔ yɛ -108.5°C lɛ, THF lɛ hiɔ shi akɛ nu yɛ hulutsoo be babaoo mli, ni ehi kɛha hulutsoo be ni baa shi kɛ la ni hoɔ oya.
Nibii ni Akɛyaa He: Nibii ni haa mɔ tsui nyɔɔ emli (0.55 mPa·s) kɛ nɔ ni haa mɔ he jɔɔ lɛ (26.4 mN/m) lɛ haa enyɛɔ ekɛ ŋmɔtɔ baa, ni ehe hiaa waa kɛha nibii ni akɛtsuɔ nii kɛjieɔ ŋmɔtɔ kɛ nibii ni akɛwoɔ nɔ lɛ.
Shweshweeshwefeemɔ He Kaadi: Etswaa waa (flash point -17.2°C) ni ekɛ kɔɔyɔɔ futuɔ nibii ni tswaa (1.8–12.4% vol), ni biɔ gbɛjianɔtoo ni mli wa ni akɛtsiɔ la naa.

Nitsumɔi Titrii ni Akɛtsuɔ Nii yɛ Nitsumɔhei Srɔtoi amli

Polimer kɛ Resin Nifeemɔ
Pɔliuretan (PU) nifeemɔ:
PTMEG Nifeemɔ: THF ji nɔ titri ni akɛfeɔ polytetramethylene ether glycol (PTMEG), ni ji nɔ ko ni he hiaa waa ni yɔɔ spandex fibers kɛ thermoplastic polyurethanes (TPUs) amli lɛ. Akɛ jeŋ muu fɛɛ THF ni fa fe 90% tsuɔ nii yɛ nɛkɛ nitsumɔ nɛɛ mli, ni spandex tɔn fɛɛ tɔn biɔ THF tɔn ~0.8.
PU Adhesives: Kɛ akɛ DMF futu mli lɛ, THF lɛ feɔ tsɔnei ni gbɛ́ɔ oya, ni mli wa waa kɛha atadei kɛ tsɔnei amli nibii, ni ehaa 35% nibii ni wa ni yɔɔ mli lɛ kɛ 40% ni gbɛ́ɔ oya fe DMF gbɛjianɔtoi krɔŋŋ lɛ.
Epoxy kɛ Resin ni akɛfee:
Akɛ nɔ ni fata epoxy he nibii ahe lɛ, THF haa nɔ ni akɛfutuɔ nii lɛ yaa hiɛ ni ehaa nɔ ni mli edɔ lɛ baa shi, ni ehaa anyɛɔ atsuɔ nii yɛ tsɔnei kɛ kɔɔyɔŋ mli nibii amli pɛpɛɛpɛ.

Organic kɛ Chemistry Krɛdɛɛi
Grignard hetooi:
THF haa dade nibii ni yɔɔ teŋgbɛ lɛ (tamɔ, RMgX) lɛ yaa hiɛ kɛtsɔ magnesium ions ni akɛtsuɔ nii lɛ nɔ, ni ehaa nɔ ni jɛɔ mli baa lɛ yaa hiɛ kɛ 15–20% kɛ akɛto diethyl ether he. Nɔkwɛmɔnɔ: Yɛ ibuprofen feemɔ mli lɛ, THF-ni damɔ Grignard nɔ lɛ naa ≥99.5% hetsemɔ kɛ ≤0.3% nibii ni jɛɔ mli baa.
Lithium batri mli la ni haa hulu kpɛɔ:
THF haa tsɔne ni akɛwoɔ tsɔne mli ni ji lithium hexafluorophosphate (LiPF6) lɛ tsuɔ nii jogbaŋŋ (≥10 mS/cm), ni ehaa sɛɛkuu wala yaa hiɛ kɛyashɛɔ shii 1,000 kɛ sɛɛ (hewalɛ ni akɛhiɛɔ nii amli ≥85%) yɛ lithium dade batrei amli.

Teknɔlɔji ni Nɔ Kwɔ kɛ Nitsumɔi Krɛdɛɛi
Semiconductor Cleaning: THF jieɔ fotoresist nibii ni eshwɛ yɛ tsɔnei bibii afeemɔ mli, ni enáa dade ion mujiwoo ≤10 ppb kɛha sub-14 nm nifeemɔi.
Tsofafeemɔ mli kristalo: Akɛtsuɔ nii yɛ tsofai ni gbeɔ helai kɛ steroids lɛ kristalo ekoŋŋ mli, THF-nu gbɛjianɔtoi haa kristalo ni tamɔ amɛhe (50–200 μm) ni ≥99.9% he tse.
Adebɔɔ mli nibii ni ajieɔ kɛjɛɔ mli: Ehalaa lipophilic compounds (tamɔ, CBD, paclitaxel) kɛ 25% hetsemɔ ni nɔ kwɔ fe nonpolar solvents, yɛ be mli ni ehaa hulutsoo fitemɔ baa shi kɛtsɔ hulutsoo ni baa shi nɔ nitsumɔ nɔ.

Nibii pɔtɛɛ

Wolo ni Kwɛɔ Nɔ ni Hi jogbaŋŋ lɛ Nɔ

Shweshweeshwefeemɔ He Susumɔi kɛ Nitsumɔhei Atsakemɔi

Hewalɛ kɛ Shihilɛ He Osharai
Toxicity: Nibii ni fa babaoo (>500 ppm) ni amuɔ lɛ baanyɛ aha CNS lɛ mli agbɔjɔ; be kakadaŋŋ ni akɛwoɔ mli lɛ baanyɛ aná liver/kidney nitsumɔ nɔ hewalɛ. Eheɔ mumɔ hebuu (APF≥10) kɛ glɔvs ni tsofai nyɛɔ eshiɔ.
Shihilɛ mli nibii ni efiteɔ: Enyɛɔ efiteɔ yɛ shikpɔŋ nɔ (wala fã ≤gbii 5) shi eyɛ awui kɛha nu mli wala (LC50 loo=110 mg/L). Esa akɛ atsu nu ni mli ewo muji lɛ he nii jogbaŋŋ (COD≤50 mg/L) dani ajie.

Mlai kɛ Teknik Hetooi
Hetsemɔ He Yibɔi:
Nitsumɔhei (≥99%): Kɛha nibii ni afee lɛ fɛɛ, ni ŋmɛɔ gbɛ ni ≤0.5% nu/aldehydes.
Elɛktronik (≥99.9%): Dade ions ≤1 ppb, SEMI C8-ni kɛ ehe kpãa gbee kɛha tsɔne ni akɛtsuɔ nii.
Tsofafeemɔ (≥99.5%): FDA-kpɛlɛ nɔ, aldehydes ≤10 ppm kɛha tsofafeemɔ.
Jeŋ muu fɛɛ mlai ahe nitsumɔ:
EU REACH: Atsi niyenii ni akɛkpeɔ lɛ naa (gbɛfaa ≤0.05 mg/kg).
200 ppm (590 mg/m3), ni biɔ ni akwɛ nitsumɔhe kɔɔyɔɔ lɛ nɔ jogbaŋŋ.

Mɛni Hewɔ Wɔhalaa Wɔ THF lɛ?

Hetsemɔ ni bɛ sɛɛnamɔ: Nibii ni akɛtsuɔ nii ni akɛtsuɔ nii shii etɛ lɛ haa THF ni ji electronic-grade lɛ he tse yɛ 99.99% mli, ni ≤10 ppm ŋmɔtɔ kɛ ≤1 ppm aldehydes, ni haa nɔ ni jɛɔ mli baa lɛ feɔ ekome (srɔtofeemɔ ≤±0.02%).
Tsabaai: Nibii ni afee lɛ pɛpɛɛpɛ kɛha nu mli nibii (50–1000 ppm), peroxide falɛ (≤10 ppm), kɛ pH (5.0–7.0), tamɔ THF ni peroxide faaa kɛha tsofafeemɔ nibii ni he hiaa waa.
Shweshweeshwefeemɔ-Kudɔɔ Nibii: Nitrogen ni akɛtoɔ kɛ gbɛfaa gbɛjianɔtoi ni nyɛɔ etswaa lɛ haa anyɛɔ atsuɔ he nii shweshweeshwe kɛjɛɔ nifeemɔ mli kɛyashiɔ be mli ni akɛhaa.
Mlai ahe gbɛjianɔtoo: Jeŋ muu fɛɛ SEMI, ACS, kɛ FDA mlai lɛ anɔyeli, ni MSDS ni anyɛɔ atsakeɔ lɛ fiɔ sɛɛ kɛha jarayeli mlibotemɔ ni bɛ naagbee.

Hefatalɔi kɛha Tsofafeemɔ He Hiɛkpamɔ

THF lɛ mli nibii ni haa mɔ tsui nyɔɔ emli, nibii ni haa mɔ tsui nyɔɔ emli, kɛ bɔ ni enyɛɔ etsakeɔ ehe ehaa lɛ haa efeɔ ŋmɛnɛŋmɛnɛ beaŋ tsofafeemɔ mli shishitoo tɛ. Wɔhe ni wɔkɛwoɔ nibii ni he tse waa, ŋaa gbɛ nɔ nibii heei ni afee, kɛ mlai ahe nitsumɔ mli lɛ haa mɛi ni heɔ nibii yɛ plastic, tsɔnei, kɛ tsofai amli lɛ hewalɛ koni amɛkudɔ nibii ni yaa hiɛ yɛ gbɛ ni sa nɔ. Halamɔ wɔ THF lɛ koni ogbele pɛpɛɛpɛfeemɔ, nitsumɔ, kɛ sɛɛfimɔ yɛ nitsumɔ fɛɛ nitsumɔ mli.