Vim li cas Tetrahydrofuran THF siv hauv HPLC?

Tetrahydrofuran Lub cev muaj zog:

Kub Point: 66 degree
Melting Point: -108.5 ° C
Ceev: 0.889 g / cm2 (20℃c)
Solubility: Tag nrho miscible nrog dej thiab ntau cov organic solvents
Volatility: siab vapor siab, evaporates yooj yim

Tetrahydrofuran THF Cov Khoom Siv Tshuaj:

THF feem ntau yog cov tshuaj ruaj khov tab sis tuaj yeem tsim cov peroxides tawg thaum raug lub teeb lossis cua.
Nws ua raws li Lewis lub hauv paus tsis muaj zog thiab tuaj yeem ua rau cov kua qaub.
Nws cov qauv cyclic tso cai rau nws mus rau lub nplhaib - qhib cov tshuaj tiv thaiv nyob rau hauv lub xub ntiag ntawm cov kua qaub los yog lub hauv paus catalysts, tsim derivatives zoo li 1,4
butanediol.

Vim li cas Tetrahydrofuran THF siv hauv HPLC?

THF feem ntau yog siv hauv HPLC vim nws lub zog eluting muaj zog.

• Lub zog hnyav: Hauv kev thim rov qab -theem HPLC, THF hnyav yog cov kuab tshuaj muaj zog heev, txhais tau tias nws tuaj yeem tshem tawm cov khoom sib txuas tau ruaj khov los ntawm kem. Qhov no tso cai rau lub sijhawm ua haujlwm luv dua.
• Selectivity: THF belongs rau ib pab pawg neeg hnyav selectivity (Pab III), tsis zoo li cov kuab tshuaj xws li methanol los yog acetonitrile. Qhov no muab cov kws tshuaj muaj zog rau cov cuab yeej uas ua kom zoo - kho qhov sib cais ntawm cov sib tov sib xyaw thiab txhim kho qhov kev daws teeb meem siab tshaj plaws.
• UV pob tshab: Tetrahydrofuran (CAS 109-}99-9) muaj qhov cuam tshuam UV qis (~ 220 nm), ua rau nws tsim nyog rau UV-Vis nrhiav pom ntawm cov wavelengths siab dua.

Qhov twg yuav Tetrahydrofuran THF hnyav?

Gneebioyog ib lub chaw muag khoom ntawmCAS 109-99-9 THF Solvent. Peb lav qhov zoo ib yam, tus nqi sib tw, thiab txhim khu kev xa khoom thoob ntiaj teb kom koj cov haujlwm ua haujlwm tau zoo. Rau ib qho kev txiav txim zoo thiab cov khoom specifications, hu rau peb hnub no los tham txog koj cov kev xav tau.

Nyem Kom Thov Ib Daim Ntawv Tso Cai

txog peb

Henan Gneebiotau tsim nyob rau hauv 2016, ua raws li lub tswv yim ntawm "cov khoom siv tshuaj lom neeg thoob ntiaj teb" thiab tsom mus rau qib siab -kev lag luam tshuaj lom neeg zoo. Lub tuam txhab feem ntau cuam tshuam cov khoom siv tshuaj lom neeg, xws li dichloromethane; methyl sulfoxide DMSO ( qib kev lag luam thiab kws tshuaj); ethylene glycol (MEG); p-Xylene, thiab lwm yam.

Tag nrho peb cov khoom siv tshuaj lom neeg tau txais cov ntawv pov thawj thoob ntiaj teb suav nrog REACH, ISO, FMQS, HALAL, thiab Halal ntawv pov thawj, kom ntseeg tau tias muaj txiaj ntsig zoo thiab kev lees paub thoob ntiaj teb, Peb muaj cov tsev khaws khoom hauv coreports xws li Qingdao, Tianiin, thiab Shanghai, nrog rau 15-hnub kev xa khoom xa tuaj.

Ntim