Monethylene glycol (MEG)yog cov xim tsis muaj xim, tsis muaj ntxhiab tsw, tsis muaj -volatility, qis-viscosity, hygroscopic kua. Nws yog kiag li miscible nrog dej thiab nyob rau hauv ntau cov organic kua.
Physical Properties of Ethylene Glycol (MEG)
- Lub xeev thiab tsos: Nyob rau hauv chav tsev kub thiab atmospheric siab, ethylene glycol yog ib tug tsis muaj kob, pob tshab, viscous kua nrog ib tug qab zib saj (li 60% qab zib li sucrose), odorless, thiab hygroscopic.
- Solubility: Miscible nrog polar solvents xws li dej, ethanol, thiab acetone; tuaj yeem yaj qee yam organic xws li resins thiab dyes, tab sis insoluble hauv non{0}}polar solvents xws li benzene thiab ether.
- Boiling Point thiab Melting Point: Boiling point yog qhov siab (kwv yees 197.3 degree); melting point nyob ib ncig ntawm -12.9 degree. Qhov ceev ntawm ntshiab ethylene glycol yog hais txog 1.113 g / cm³ (siab dua dej), thiab nws cov viscosity nce ntau nyob rau hauv qis kub.
- Kev nyab xeeb: Muaj tshuaj lom yog tias noj, ua rau mob hnyav ua rau lub raum thiab lub paj hlwb; kev noj yuav tsum tau zam nruj me ntsis. Kev sib cuag ntawm daim tawv nqaij ntev yuav ua rau mob me me, tab sis qhov tsis muaj zog ua rau kev nqus pa tsawg tsawg.
Chemical Properties of Ethylene Glycol (MEG)
- Hydroxyl Reactivity: Ob pawg hydroxyl hauv cov molecule tuaj yeem ua rau esterification, etherification, oxidation, thiab lwm yam. Piv txwv li, condensation nrog dicarboxylic acids (xws li terephthalic acid) tsim polyesters, thiab cov tshuaj tiv thaiv nrog nitric acid forms nitrate esters, uas tuaj yeem siv rau hauv cov khoom tawg.
- Hygroscopicity: Cov pab pawg hydroxyl txhawb nqa dej, tsim hydrogen bonds; yog li, ethylene glycol muaj cov dej noo zoo heev -absorbing muaj peev xwm thiab tuaj yeem siv los ua cov tshuaj humectant lossis dehydrating agent.
- Tsawg-Kev Cuam Tshuam Kub: Thaum sib xyaw nrog dej, ethylene glycol txo qis qhov chaw khov (piv txwv li, 40% aqueous solution freezes at about -}25 degree, 60% aqueous solution at about -49 degree) thaum muaj qhov kub siab tshaj li dej, ua rau nws haum raws li qhov kub thiab txias.
- Stability: ruaj khov ntawm chav tsev kub thiab tsis yooj yim decomposed; Txawm li cas los xij, ntawm qhov kub thiab txias (tshaj 200 degree) los yog nyob rau hauv lub xub ntiag ntawm catalysts, nws muaj peev xwm oxidize rau cov tebchaw xws li glyoxal thiab oxalic acid.
Monethylene Glycol(MEG) Siv
- Cov khoom siv raw rau polyester fibers, PET resins, thiab hluavtaws fibers
- Siv rau hauv cov tshuaj tiv thaiv kab mob, cov khoom ua kom txias, thiab cov kua dej hloov pauv kub
- Solvent nyob rau hauv coatings, inks, thiab adhesives
Vim li cas thiaj xaiv Gneebio?
Gneebio, nrog ntau xyoo dhau los ntawm kev tshawb fawb, kev tsim khoom, thiab kev lag luam ntawm cov tshuaj organic, yog ib qho ntawm cov khoom xa tawm ntawm cov khoom siv tshuaj hauv Henan, Suav. Tau ntau xyoo, peb tau cog lus rau kev lag luam tshuaj lom neeg ntawm cov khoom nruab nrab, cov khoom siv yas, cov tshuaj kho dej thiab cov tshuaj fungicides, thiab tshuaj txhua hnub.
Qhov zoo
1) Cov khoom xa tuaj me me thiab sub- ntim khoom muaj.
2). Muab COA, MSDS, Daim Ntawv Pov Thawj Kev Noj Qab Haus Huv, thiab Daim Ntawv Pov Thawj Keeb Kwm.
3) Zoo ua ntej, kev pabcuam zoo tshaj plaws.