Xylene (CAS 1330-20-7)yog hais txog ib pab pawg ntawm peb cov isomers zoo sib xws-cov tshuaj sib xyaw nrog tib cov tshuaj formula (C₈H₁₀) tab sis cov qauv sib txawv. Peb hom no yog ortho-xylene (o-xylene), meta-xylene (m-xylene), thiab para-xylene (p-}xylene), txawv los ntawm txoj hauj lwm ntawm ob pawg methyl txuas rau lub nplhaib benzene.
1. Ortho-xylene (o-xylene, CAS 95-47-6)
- Qauv:Ob pawg methyl nyob ib sab (1,2 txoj haujlwm) ntawm lub nplhaib benzene, tsis muaj qhov chaw nruab nrab ntawm lawv.
- Khoom:Cov kua uas tsis muaj xim uas muaj ntxhiab tsw qab, kub ntawm 144℃- siab dua li ob isomers. Nws yog me ntsis denser thiab tsawg volatile tshaj m- los yog p-xylene.
- Kev siv:Feem ntau hloov mus rau hauv phthalic anhydride, cov khoom tseem ceeb hauv plasticizers (kom cov yas hloov tau yooj yim), dyes, thiab polyester resins. Nws kuj tseem siv los ua cov kuab tshuaj hauv qee cov txheej txheem kev lag luam.
2. Meta-xylene (m-xylene, CAS 108-38-3)
- Qauv:Cov pab pawg methyl raug cais los ntawm ib qho carbon atom (1,3 txoj haujlwm) ntawm lub nplhaib benzene.
- Khoom:Cov kua tsis muaj xim nrog cov ntxhiab tsw qab zoo sib xws, kub ntawm 139 degree. Nws yog volatile ntau dua o-xylene thiab yog cov isomer tshaj plaws nyob rau hauv natural xylene mixs.
- Kev siv:Feem ntau yog siv los tsim cov isophthalic acid, uas yog siv rau hauv polyester resins rau fiberglass, ntim khoom noj, thiab lub raj mis yas. Nws kuj ua raws li cov kuab tshuaj nyob rau hauv cov xim, inks, thiab tshuaj ntxuav.
3. Para-xylene (p-xylene, CAS 106-42-3)
- Qauv:Cov pab pawg methyl yog qhov sib txawv ntawm ib leeg (1,4 txoj haujlwm) ntawm lub nplhaib benzene, muab nws cov duab sib luag.
- Khoom:Cov kua dej tsis muaj xim nrog cov ntxhiab tsw qab, ua rau kub ntawm 138 degrees. Nws muaj qhov siab tshaj plaws melting point (13.2 degree) ntawm peb, lub ntsiab lus nws solidifies yooj yim dua nyob rau hauv txias txias.
- Kev siv:Yuav luag tshwj xeeb yog siv los ua terephthalic acid, ib qho tseem ceeb hauv PET (polyethylene terephthalate) plastics - pom nyob rau hauv fwj dej, polyester fabrics, thiab ntim khoom noj. Nws symmetry ua kom zoo ib yam hauv PET ntau lawm.
Tag nrho peb xylenes yog volatile, insoluble nyob rau hauv dej, thiab soluble nyob rau hauv organic solvents. Thaum lawv qhia cov khoom zoo sib xws, lawv cov qauv sib txawv ua rau muaj kev sib txawv ntawm kev lag luam, ua rau txhua tus isomer muaj txiaj ntsig hauv cov txheej txheem tsim khoom tshwj xeeb.
Peb xa tawm xylene txhua xyoo puag ncig, tuaj yeem xyuas kom meej tias cov khoom lag luam zoo lav rau cov neeg siv khoom.Peb muab Cov Ntawv Pov Thawj Ua Lag Luam, Cov Ntawv Sau, Daim Ntawv Sau Npe, COA.Koj puas txaus siab rau cov khoom no? Thov xa cov lus nug, thiab peb yuav tiv tauj koj hauv 24 teev ua haujlwm los tham txog koj cov kev xav tau.
Tiv tauj peb rau ib qho kev tsocai
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 neeg xa khoom ntawm cov khoom siv tshuaj hauv Henan, Suav teb.Tau ntau xyoo, peb tau cog lus rau kev lag luam tshuaj lom neeg ntawm intermediates, yas additives, dej kho tshuaj thiab fungicide, thiab tshuaj txhua hnub.
Peb cov khoom nrov muaj xws li Cov Khoom Siv Hluav Taws Xob (Polyisobutylene, Styrene Monomer, Propylene Glycol, Cyclohexanone, Cyclohexane, Isopropyl Cawv), Cov Tshuaj Txhua Hnub (Didecylmethylamine, Dodecyl dimethyl betaine), thiab ntau yam Petrochemicals (Ethylene Tar, Petroleum).
Qhov zoo
1). Cov khoom xa tuaj me me thiab sub- ntim yog muaj.
2). Muab COA, MSDS, Daim Ntawv Pov Thawj Kev Noj Qab Haus Huv thiab Daim Ntawv Pov Thawj Keeb Kwm.
3). Ua ntej, kev pabcuam zoo tshaj plaws.