thylene glycol
Synonyms in English
Ethylene glycol, 1, 2-ethylenediol, EG luv luv
tshuaj yam ntxwv
Tshuaj formula: (CH2OH)2 Molecular Luj: 62.068 CAS: 107-21-1 EINECS: 203-473-3 [5 Melting point: -12.9 ℃ Boiling point: 197.3 ℃
Khoom taw qhia thiab nta
CH2OH 2, uas yog qhov yooj yim tshaj plaws diol.Ethylene glycol yog cov xim tsis muaj xim, tsis muaj ntxhiab, kua qab zib nrog cov tshuaj lom neeg tsawg.Ethylene glycol tuaj yeem sib koom ua ke nrog dej thiab acetone, tab sis nws cov solubility hauv ethers yog me me.Siv ua hnyav, antifreeze thiab hluavtaws polyester raw khoom.Lub polymer ntawm ethylene glycol, polyethylene glycol (PEG), yog ib theem hloov catalyst thiab tseem siv hauv cell fusion.
siv
Feem ntau yog siv los ua polyester, polyester, polyester resin, ya raws absorbent, plasticizer, nto active neeg sawv cev, hluavtaws fiber, tshuaj pleev ib ce thiab explosives, thiab siv raws li ib tug hnyav rau dyes, inks, thiab lwm yam., kev npaj lub cav antifreeze tus neeg saib xyuas, roj dehydrating tus neeg saib xyuas, manufacturing resin, kuj siv tau rau cellophane, fiber, tawv, nplaum wetting tus neeg saib xyuas.Nws tuaj yeem tsim cov khoom siv hluavtaws PET, fiber ntau PET uas yog polyester fiber, lub raj mis hlais PET rau ua cov dej ntxhia hauv fwj thiab lwm yam.Kuj tseem tuaj yeem tsim alkyd resin, glyoxal, thiab lwm yam, kuj siv los ua cov tshuaj tiv thaiv kab mob.Ntxiv nrog rau kev siv los tiv thaiv lub tsheb, nws kuj tseem siv tau rau kev thauj mus los ntawm kev lag luam cua txias, feem ntau hu ua cab kuj refrigerant, thiab tseem tuaj yeem siv los ua tus neeg sawv cev zoo li dej.
Ethylene glycol methyl ether series cov khoom lag luam yog cov organic solvents zoo, xws li luam ntawv number case, muaj kev tu tus neeg saib xyuas, txheej (nitro fiber xim, kua roj vanish, enamel), tooj liab coated phaj, luam ntawv thiab dyeing solvents thiab diluents;Nws tuaj yeem siv los ua cov ntaub ntawv raw rau cov khoom siv tshuaj xws li tshuaj tua kab intermediates, tshuaj intermediates thiab hluavtaws hluavtaws.Raws li electrolytes rau electrolytic capacitors, tshuaj fiber ntau dyeing tus neeg sawv cev rau tanning, thiab lwm yam. Siv raws li textile auxiliaries, hluavtaws kua dyes, raws li zoo raws li chiv thiab roj refining nyob rau hauv zus tau tej cov desulfurizer raw cov ntaub ntawv.
Ethylene glycol yuav tsum tau sau tseg thaum siv los ua cov khoom siv tub yees:
1. Lub freezing point hloov nrog cov concentration ntawm ethylene glycol nyob rau hauv aqueous tov.Thaum cov concentration qis dua 60%, qhov chaw khov kho yuav txo qis nrog qhov nce ntawm cov concentration ntawm ethylene glycol hauv cov kua dej, tab sis thaum cov concentration siab tshaj 60%, qhov khov khov nce ntxiv nrog qhov nce ntawm cov concentration ntawm ethylene glycol, thiab viscosity. nce nrog qhov nce ntawm qhov concentration.Thaum cov concentration nce mus txog 99.9%, nws qhov chaw khov khov nce mus rau -13.2 ℃, uas yog ib qho tseem ceeb vim li cas cov tshuaj tiv thaiv kab mob siab (antifreeze niam kua) tsis tuaj yeem siv ncaj qha, thiab yuav tsum nyiam cov neeg siv.
2. Ethylene glycol muaj hydroxyl pawg, uas yuav oxidized rau glycolic acid thiab ces mus rau oxalic acid, uas yog, glycolic acid (oxalic acid), muaj 2 pawg carboxyl, thaum nws ua hauj lwm ntawm 80-90 ℃ ntev.Oxalic acid thiab nws cov by-products cuam tshuam thawj lub hauv paus paj hlwb, tom qab ntawd lub plawv, thiab tom qab ntawd lub raum.Ethylene glycol glycolic acid, ua rau corrosion thiab to ntawm cov khoom siv.Yog li ntawd, nyob rau hauv kev npaj ntawm antifreeze, yuav tsum muaj ib tug preservative los tiv thaiv corrosion ntawm hlau, txhuas thiab tsim ntawm scale.
pob thiab thauj
B. Cov khoom no tuaj yeem siv tau, 25KG, 200KG, 1000KGBAERRLS.
C. Khaws ntim rau hauv qhov chaw txias, qhuav thiab qhov cua nyob hauv tsev.Cov thawv ntim khoom yuav tsum tau muab kaw kom nruj tom qab siv txhua zaus ua ntej siv.
D. Cov khoom no yuav tsum raug kaw kom zoo thaum lub sijhawm thauj mus los kom tsis txhob ya raws, muaj zog alkali thiab acid, nag thiab lwm yam impurities los ntawm kev sib xyaw.
