Cov Khoom Noj Khoom Haus Meta-Xylene Uas Muaj Kev Ntshiab Siab

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Xylene (feem ntau hu ua dimethylbenzene) yog ib qho tseem ceeb aromatic hydrocarbon hauv kev lag luam chemistry. Muaj peb isomers (o-, m-, thiab p-xylene), Xylene lag luam feem ntau yog ib qho sib tov ruaj khov, zoo li cov kua tsis muaj xim, pob tshab nrog ib qho tsw ntxhiab tsw qab.

Xylene no ua haujlwm ua thawj zaug ua cov kuab tshuaj ua haujlwm siab: nws yaj cov resins, roj hmab, thiab cov xim rau cov txheej, cov kua luam ntawv, thiab kev ntxuav hluav taws xob. Tshaj li qhov ua kom yaj tau, Xylene ua haujlwm ua cov khoom noj tseem ceeb - ua tiav rau hauv p-xylene (ua ntej rau cov yas PET) thiab cov tshuaj zoo rau cov ntaub thiab ntim khoom.

Qhov tseem ceeb, Xylene yog cov khoom siv uas yooj yim hlawv, thiab yuav tsum muaj cua nkag tau zoo thaum lub sijhawm ua haujlwm. Txawm hais tias muaj kev ceev faj li no los xij, Xylene tseem yog ib yam khoom siv tseem ceeb uas txhawb nqa cov tshuaj lom neeg niaj hnub no thiab cov khoom siv tsim khoom.

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Cov Lus Qhia Txog Khoom

Cov Cim Npe Khoom

Kev piav qhia

Khoom	Cov Kev Ntsuas Tshwj Xeeb
Cov Qauv Molecular	C₈H₁₀
Qhov Hnyav Molecular	106.17
CAS Nr.	1330-20-7 (sib tov); o-Xylene: 95-47-6; m-Xylene: 108-38-3; p-Xylene: 106-42-3
Qhov tsos thiab tus cwj pwm	Cov kua tsis muaj xim pob tshab nrog cov ntxhiab tsw qab; qib kev lag luam yog sib xyaw ntawm o / m / p-isomers
Qhov Kub Yaj	-47.9℃ (o-Xylene) / -47.4℃ (m-Xylene) / 13.3℃ (p-Xylene)
Kub Kub	144.4 ℃ (o-Xylene) / 139.1 ℃ (m-Xylene) / 138.4 ℃ (p-Xylene)
Qhov Ceev Sib Txheeb Ze (dej = 1)	0.880 (o-Xylene, 20℃) / 0.864 (m-Xylene, 20℃) / 0.861 (p-Xylene, 20℃)
Qhov Sib Txheeb Ze ntawm Cov Pa Hluav Taws Xob (cua = 1)	3.7 (sib tov)
Siab ntawm cov pa roj uas tau nqus	1.3 kPa (25 ℃, m-Xylene); 0.8 kPa (25 ℃, p-Xylene)
Qhov Teeb Meem	25 ℃ (khob kaw, sib tov)
Kev Txwv Kev Tawg	1.0% ~ 7.0% (feem ntim, cua)
Kev yaj tau	Insoluble hauv dej; sib xyaw nrog ethanol, ether, acetone, benzene, thiab lwm yam.
Qhov viscosity	0.6 mPa·s (20 ℃, sib tov)
Refractive Index	1.495 (o-Xylene, 20℃) / 1.497 (m-Xylene, 20℃) / 1.496 (p-Xylene, 20℃)
Kub Kub Uas Pib Hluav Taws Xob	464 ℃ (sib tov)
Tus nqi pH (1% kua)	Nruab nrab (6.5 ~ 7.5)

Xylene (CAS 1330-20-7) yog ib qho tshuaj yaj tseem ceeb hauv petrochemical thiab cov khoom siv tshuaj lom neeg, uas muaj peb lub isomers (o-, m-, thiab p-xylene) uas tsim cov kua dej ruaj khov, tsis muaj xim nrog rau ntxhiab tsw qab. Nws tau txais kev qhuas rau nws lub zog ua kom yaj tau zoo thiab kev sib haum xeeb ntawm cov khoom siv, nws ua haujlwm ua cov khoom siv tseem ceeb uas ua tau raws li cov kev cai nruj ntawm kev tsim khoom thiab kev tsim khoom.

Siv dav thoob plaws ntiaj teb, nws ua haujlwm ua cov kuab tshuaj ua haujlwm siab rau cov txheej txheej, cov kua luam ntawv, thiab kev ntxuav cov khoom siv hluav taws xob; nws kuj ua haujlwm ua cov khoom siv tseem ceeb rau kev tsim cov p-phthalic acid (lub hauv paus tseem ceeb rau cov yas PET) thiab cov tshuaj zoo. Cov derivatives no txhawb nqa ntxiv rau kev lag luam suav nrog kev ntim khoom, kev tsim cov txheej txheem tsheb, kev tsim khoom siv hluav taws xob, kev ua cov ntaub, thiab kev kho kom zoo nkauj vaj tse.

Peb cov khoom xylene muaj ntau qib xaiv (qib kev lag luam thiab qib siab huv) kom haum rau ntau yam kev xav tau ntawm kev tsim khoom, nrog rau kev tswj xyuas zoo kom ntseeg tau tias muaj cov khoom tsis huv tsawg thiab kev daws teeb meem ruaj khov. Peb lav qhov kev xa khoom ntau, cov ntaub ntawv pov thawj khoom phom sij tiav (xws li MSDS thiab daim ntawv pov thawj UN), thiab cov kev daws teeb meem logistics rau kev thauj mus los ntawm cov kua dej uas yooj yim hlawv. Tsis tas li ntawd, peb pab neeg tshaj lij muab kev txhawb nqa tus kheej - xws li kev taw qhia txog qhov chaw khaws cia thiab cov lus qhia txog kev sib haum xeeb ntawm cov kuab tshuaj - kom ua kom koj cov khoom tsim tau zoo thiab kev nyab xeeb hauv kev ua haujlwm.

Cov Lus Qhia Txog Xylene

Khoom	Cov Lus Qhia Tshwj Xeeb
Qhov tsos	Cov kua pob tshab, tsis muaj cov khoom tsis huv uas raug tshem tawm
Chromaticity/Hazen(Pt-Co) ≤	20
Qhov Ceev (20 ℃) / (kg / m3)	860~870
Lub Kub Pib / ℃ ≥	137
Qhov Chaw Qhuav / ℃ ≤	143
Tag Nrho Cov Kev Sib Distillation / ℃ ≤	5
Xim ntxuav kua qaub, g/L	Xim tsis tsaus dua li cov tshuaj txheem (0.5gK₂Cr₂O₇ hauv 1000mL dilute acid)
Tag nrho cov sulfur ntsiab lus / (mg/kg) ≤	1
Cov Khoom seem uas ua pa / (mg/100mL) ≤	5
Kev xeb ntawm cov tooj liab	Dhau
Kev Ntsuas Qhov Tsis Sib Haum Xeeb	Nruab nrab
Cov khoom seem uas ua pa tawm / (mg / 100mL) ≤	3
Kev sim rau qhov tsis muaj kev sib koom siab	nruab nrab

Kev ntim khoom ntawm Xylene

Hauv 180kg net yas nruas lossis IBC nruas.

Kev Khaws Cia: Khaws cia rau hauv qhov chaw txias, qhuav, thiab muaj cua nkag tau; Khaws cia kom sib cais ntawm cov tshuaj oxidizing (piv txwv li, nitric acid, peroxides), cov kua qaub muaj zog, thiab halogens. Tsis txhob sib tov lossis khaws cia ua ke.