Zakudya Zamankhwala Zapamwamba Zoyera za Meta-Xylene

Chidutswa cha Mankhwala Oyera Kwambiri a Meta-Xylene

kufotokozera mwachidule:

Xylene (yomwe nthawi zambiri imatchedwa dimethylbenzene) ndi hydrocarbon yofunika kwambiri mu chemistry yamafakitale. Pokhala ndi ma isomer atatu (o-, m-, ndi p-xylene), Xylene yogulitsa nthawi zambiri imakhala yosakanikirana bwino, yomwe imawoneka ngati madzi opanda mtundu, owonekera bwino komanso onunkhira bwino.

Xylene yosinthasintha iyi imagwira ntchito yoyamba ngati chosungunulira chapamwamba kwambiri: imasungunula ma resins, rabara, ndi utoto wa zokutira, inki zosindikizira, ndi kuyeretsa zamagetsi. Kupatula kusungunuka, Xylene imagwira ntchito yofunika kwambiri - yokonzedwa kukhala p-xylene (yoyambira mapulasitiki a PET) ndi mankhwala abwino opangira nsalu ndi ma phukusi.

Chochititsa chidwi n'chakuti, Xylene imayaka moto, ndipo imafuna mpweya wabwino poigwiritsa ntchito. Ngakhale kuti pali njira zodzitetezera zotere, Xylene ikadali chinthu chofunikira chomwe chimagwiritsa ntchito mankhwala ndi zinthu zamakono zopangira.

Tumizani imelo kwa ife

Tsatanetsatane wa Zamalonda

Ma tag a Zamalonda

Kufotokozera

Chinthu	Magawo Apadera
Fomula ya Maselo	C₈H₁₀
Kulemera kwa Maselo	106.17
Nambala ya CAS	1330-20-7 (zosakaniza); o-Xylene: 95-47-6; m-Xylene: 108-38-3; p-Xylene: 106-42-3
Maonekedwe ndi Khalidwe	Madzi owonekera opanda mtundu ndi fungo lonunkhira bwino; mtundu wa mafakitale ndi chisakanizo cha o/m/p-isomers
Malo Osungunuka	-47.9℃ (o-Xylene) / -47.4℃ (m-Xylene) / 13.3℃ (p-Xylene)
Malo Owira	144.4℃ (o-Xylene) / 139.1℃ (m-Xylene) / 138.4℃ (p-Xylene)
Kuchulukana kwapakati (madzi = 1)	0.880 (o-Xylene, 20℃) / 0.864 (m-Xylene, 20℃) / 0.861 (p-Xylene, 20℃)
Kuchuluka kwa nthunzi (mpweya = 1)	3.7 (chosakaniza)
Kuthamanga kwa Nthunzi Yokhuta	1.3 kPa (25℃, m-Xylene); 0.8 kPa (25℃, p-Xylene)
Pophulikira	25℃ (chikho chotsekedwa, chosakaniza)
Malire a Kuphulika	1.0% ~ 7.0% (gawo la voliyumu, mpweya)
Kusungunuka	Sasungunuka m'madzi; amasakanikirana ndi ethanol, ether, acetone, benzene, ndi zina zotero.
Kukhuthala	0.6 mPa·s (20℃, osakaniza)
Chizindikiro Chowunikira	1.495 (o-Xylene, 20℃) / 1.497 (m-Xylene, 20℃) / 1.496 (p-Xylene, 20℃)
Kutentha Kodzidzimutsa	464℃ (chosakaniza)
pH Value (1% yankho)	Chosalowerera (6.5~7.5)

Xylene (CAS 1330-20-7) ndi chinthu chofunikira kwambiri chosungunulira mafuta ndi mankhwala, chomwe chili ndi ma isomers atatu (o-, m-, ndi p-xylene) omwe amapanga madzi okhazikika, opanda mtundu ndi fungo lonunkhira bwino. Yodziwika bwino chifukwa cha mphamvu yake yabwino kwambiri yosungunulira madzi komanso kugwirizana kwa zinthu, imagwira ntchito ngati chinthu choyambira chomwe chimakwaniritsa zofunikira zolimba za kapangidwe ka mafakitale ndi kapangidwe kake.

Yogwiritsidwa ntchito kwambiri padziko lonse lapansi, imagwiritsidwa ntchito makamaka ngati chosungunulira chapamwamba kwambiri cha zokutira, inki zosindikizira, ndi kuyeretsa zigawo zamagetsi; imagwiranso ntchito ngati chakudya chofunikira kwambiri popanga p-phthalic acid (choyambira mapulasitiki a PET) ndi mankhwala abwino. Zotumphukira izi zimathandiziranso mafakitale kuphatikiza kulongedza, kupanga zokutira zamagalimoto, kupanga zida zamagetsi, kukonza nsalu, ndi kukongoletsa zomangamanga.

Chogulitsa chathu cha xylene chimapereka njira zingapo zoyezera (zapamwamba kwambiri komanso zapamwamba kwambiri) kuti zigwirizane ndi zosowa zosiyanasiyana zopangira, zomwe zimakhala ndi kuwongolera kwapamwamba kwambiri kuti zitsimikizire kuti zinthu sizili zodetsedwa komanso kuti zinthu sizili zodetsedwa/zokhazikika nthawi zonse. Tikutsimikizira kupezeka kodalirika kwa zinthu zambiri, zikalata zonse zowopsa (kuphatikiza MSDS ndi satifiketi ya UN), komanso njira zoyendetsera zinthu zoyendetsedwa ndi anthu kuti zigwiritsidwe ntchito ponyamula madzi oyaka. Kuphatikiza apo, gulu lathu la akatswiri limapereka chithandizo chapadera - monga chitsogozo cha momwe zinthu zilili komanso malangizo ogwirizana ndi zosungunulira - kuti muwongolere bwino ntchito yanu yopanga komanso chitetezo cha ntchito.

Kufotokozera kwa Xylene

Chinthu	Kufotokozera
Maonekedwe	Madzi owonekera bwino, opanda zonyansa zopachikidwa
Chromaticity/Hazen(Pt-Co) ≤	20
Kachulukidwe (20℃)/(kg/m2)	860~870
Malo Oyamba Owira / ℃ ≥	137
Malo Ouma / ℃ ≤	143
Chiwerengero Chonse cha Distillation / ℃ ≤	5
Mtundu Wotsuka wa Acid, g/L	Mtundu wosadetsedwa kuposa njira yokhazikika (0.5gK₂Cr₂O₇ mu 1000mL asidi wosungunuka)
Kuchuluka kwa sulfure / (mg/kg) ≤	1
Zotsalira za nthunzi / (mg/100mL) ≤	5
Kutupa kwa Mkuwa	Pasipoti
Mayeso a Kusalowerera M'ndale	Osalowerera
Zotsalira za nthunzi/(mg/100mL) ≤	3
Kuyesa kusalowerera ndale	osalowerera ndale

Kupaka Xylene

Mu ng'oma ya pulasitiki yolemera makilogalamu 180 kapena ng'oma ya IBC.

Kusungira: Sungani m'nyumba yosungiramo zinthu yozizira, youma, komanso yodutsa mpweya; Sungani mosamala kutali ndi zinthu zopangitsa kuti zinthu zisawonongeke (monga nitric acid, peroxides), ma acid amphamvu, ndi ma halogen. Musasakanize kapena kusunga pamodzi.