Acetonitrile thiab methanol yog ob qho tseem ceeb organic solvents nyob rau hauv lub mobile theem ntawm kev ua tau zoo kua chromatography (HPLC). Lawv qhov sib txawv polarity ncaj qha cuam tshuam rau kev sib cais kev ua tau zoo, qhov siab tshaj plaws, thiab elution sequence.
Vim li cas acetonitrile ntau dua polar dua methanol?
Qhov tseem ceeb tshaj plaws yog molecular dipole lub sij hawm. Acetonitrile muaj ib pawg cyano(-C≡N), ib tug heev electronegative triple - pawg neeg ua hauj lwm sib koom tes. Cov qauv no tsim kev sib cais ntawm electron heev thiab muaj zog mus tas li dipole hla cov molecule.
Methanol tsuas yog nqa ib pawg hydroxyl(-OH). Thaum cov pab pawg hydroxyl yog polar thiab ua rau hydrogen bonding, nws tag nrho cov nqi sib cais tsis muaj zog. Acetonitrile lub sijhawm muaj zog dipole muab nws qhov tseem ceeb dua tus nqi polarity.
Kev sib piv Acetonitrile vs Methanol Polarity
| Yam khoom | Cov tshuaj acetonitrile | Methanol |
|---|---|---|
| Hom kuab tshuaj | Polar aprotic muaj nuj nqi | Polar tiv thaiv |
| Dipole lub sijhawm | Siab (3.92 D) | qis (1.70 D) |
| Cov pab pawg tseem ceeb polar | Cyano pawg (–C≡N) | Hydroxyl pawg (–OH) |
| Hydrogen bonding | Tsis muaj | Muaj zog |
| Zuag qhia tag nrho polarity | Ntau polar | Tsawg polar |
| Lub zog tseem ceeb ntawm lub zog | Dipole-cov | Hydrogen daim ntawv cog lus |
Acetonitrile Organic Solvent CAS 75-05-8
Vim li cas ACN thiab methanol siv hauv HPLC?
Acetonitrile (ACN):Tsawg viscosity, tsis tshua muaj UV nqus, siab elution zog, zoo rau kev sib cais ceev thiab tsis tshua muaj suab nrov.
Methanol:Kev xaiv lub cev muaj zog dua, tus nqi qis dua, tsim nyog rau kev sib cais cov polar tebchaw thiab kho kev tuav pov hwm. Ob leeg yog miscible nrog dej, siab purity, thiab zoo tagnrho raws li thim rov qab -theem HPLC mobile theem kuab tshuaj.
txog peb
Raws li ib tug ua chaw tsim tshuaj paus thiab exporter ntawm tshuaj solvent,TIANJIN GNEE BIOTECH CO., LTD.muab siab -cov tshuaj muaj txiaj ntsig zoo. Peb muab rau cov neeg siv khoom thoob plaws kev lag luam tshuaj, tshuaj, thiab cov khoom siv, ua kom zoo ib yam, txhim khu kev qha logistics, thiab kev txhawb nqa kev tshaj lij.
Peb cov khoom siv tshuaj muaj ntawv pov thawj thoob ntiaj teb (REACH, ISO, FMQS, HALAL) rau kev lees paub thoob ntiaj teb. Peb muaj warehouses nyob rau hauv coreports xws li Qingdao, Tianiin, thiab Shanghai, nrog ib tug 15-hnub kev pab xa khoom xa tuaj.
Lwm Yam Kub- Muag Khoom
| Dimethyl Sulfoxide (DMSO) | CAS 67-68-5 Nr |
| Dichloromethane / Methylene Chloride | CAS Nr .: 75-09-2 |
| Glacial Acetic Acid / Ethanoic Acid | CAS 64-19-7 Nr |
| Ethyl Acetate / Ethyl Ethanoate | CAS Nr .: 141-78-6 |
| Ethylene Glycol / Monoethylene Glycol (MEG) | CAS Nr .: 107-21-1 |
| Trichlorethylene | CAS Nr .: 79-01-6 |
| Cyclhexanone | CAS Nr .: 108-94-1 |
Gneebio Khoom ntim khoom
| Ntim Hom | Net nyhav |
|---|---|
| Hlau Nruas | 250 kg |
| IBC Tank | 12 50kg |
| ISO Tank | Kev xa khoom ntau |
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