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Phenol (C6H5OH) yog ib qho siv lead ua zoo li koob tsis muaj xim nrog rau ib qho tsw tshwj xeeb. Nws ua haujlwm ua ib qho khoom siv tseem ceeb hauv kev tsim cov resins, bactericidals, preservatives, thiab tshuaj (xws li aspirin). Nws kuj tseem siv tau rau kev tua kab mob cov cuab yeej phais, kho cov quav ...Nyeem ntxiv»
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Feem ntau siv ua cov khoom siv raw rau vinyl chloride, ethylene glycol, oxalic acid, ethylenediamine, tetraethyl lead, polyethylene polyamine, thiab benzil. Kuj siv ua cov kuab tshuaj rau cov roj, cov resins, thiab roj hmab; ua cov tshuaj ntxuav qhuav; ua cov tshuaj rho tawm rau cov tshuaj tua kab xws li pyrethrin, caffeine, vitamins...Nyeem ntxiv»
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Ethanol (feem ntau hu ua cawv) yog ib qho tseem ceeb organic compound nrog ntau yam kev siv thiab kev ua haujlwm. Cov hauv qab no yog cov kev siv tseem ceeb thiab kev ua haujlwm ntawm ethanol: ① Dej haus: Ethanol yog cov khoom tseem ceeb ntawm cov dej haus cawv thiab tuaj yeem tsim los ntawm kev ua kom cov suab thaj hauv cov kab mob me me. ② Di...Nyeem ntxiv»
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Lub cev: Hauv kev ua lag luam tseem ceeb, cov nqi toluene hauv tsev kaw nrog kev hloov pauv me me nag hmo, qhia txog kev hloov pauv me ntsis ntawm ntau thaj chaw sib txawv. Hauv Jiangsu, kev sib tham tau nce siab dua, txhawb nqa los ntawm kev nce nqi ntawm xylene. Lub caij no, hauv South China thiab Shandong, kev thov tau mos muag, ua rau muaj ...Nyeem ntxiv»
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Cov nqi dichloromethane hauv tebchaws (DCM) tau ruaj khov hauv lub sijhawm dhau los, tom qab kev poob qis thaum lub sijhawm so. Qhov kev poob qis ntawm tus nqi tau txhawb nqa qee qhov kev rov ua dua tshiab los ntawm cov tub luam thiab cov neeg yuav khoom hauv qab, txhawb nqa cov khoom xa tuaj zoo rau cov neeg tsim khoom, tshwj xeeb tshaj yog cov uas muab tus nqi qis dua, ...Nyeem ntxiv»
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Kev Ruaj Ntseg Xav Tau Ua Ntej Lub lag luam toluene hauv Suav teb tau pom muaj kev txav mus los sib txawv hauv cheeb tsam thaum kaw lub rooj sib tham ua lag luam kawg. Hauv cov lag luam sab qaum teb, cov nqi tau poob qis me ntsis thaum pib vim muaj kev thov tsis zoo thaum kawg lub lim tiam. Txawm li cas los xij, cov nqi qis dua tom qab ntawd tau nyiam qee tus neeg ua lag luam ...Nyeem ntxiv»
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Lub lag luam propylene glycol kaw qis dua hauv kev sib pauv dhau los, nrog rau kev muab khoom ruaj khov thiab txaus ua rau tus nqi hnyav. Cov neeg tsim khoom txuas ntxiv txo cov kev muab, thaum cov neeg yuav khoom hauv qab tseem ceev faj, ua rau kev txhim kho tsawg hauv cov ntim kev lag luam. Zuag qhia tag nrho, kev ua lag luam tseem tsis muaj zog,...Nyeem ntxiv»
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Daim Duab Qhia Txog Kev Lag Luam (Hnub Ua Lag Luam Yav Dhau Los): Tus nqi Butyl acrylate tau ntsuas qis dua hauv kev sib tham dhau los. Thaum cov neeg muag khoom loj feem ntau khaws cia lossis txo qis me ntsis lawv cov nqi teev npe, qee tus tau qhia txog kev ywj pheej ntau dua hauv kev sib tham. Kev cuam tshuam ntawm kev lag luam sib txawv los ntawm thaj chaw vim yog qhov hnyav ntawm cov qauv. Qis dua...Nyeem ntxiv»
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1. Cov Yam Tseem Ceeb Uas Cuam Tshuam Rau Kev Hloov Pauv Tus Nqi Hauv Kev Lag Luam Tam Sim No Kev Muab Khoom: Cov haujlwm ntawm cov nroj tsuag isopropanol hauv tsev feem ntau tseem ruaj khov, nrog rau kev muab khoom ntau hauv kev lag luam. Kev Xav Tau: Kev ua raws li sab kev xav tau yog qhov nruab nrab, nrog rau cov lag luam hauv qab tswj hwm cov kev xav tau kev yuav khoom nruj. Tus nqi: Ob yam khoom siv raw ...Nyeem ntxiv»
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SHANGHAI - Tuam Tshoj tus nqi nruab nrab ntawm kev ua haujlwm rau dichloromethane (methylene chloride) kev tsim khoom tau nce siab lub lim tiam no, ncav cuag 76.89%, nce ntawm 10.82 feem pua ntawm lub sijhawm dhau los. Qhov kev nce siab feem ntau yog tsav los ntawm kev ua haujlwm ntau dua ntawm Shandong Luxi Chemical lub ntsej muag ...Nyeem ntxiv»
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Lub lim tiam no, tus nqi ntawm cov khoom lag luam hauv cov saw hlau phenol-ketone feem ntau poob qis. Kev hla tus nqi tsis zoo, nrog rau kev muab khoom thiab kev thov siab, ua rau muaj kev hloov kho qis rau cov nqi saw hlau kev lag luam. Txawm li cas los xij, cov khoom lag luam sab saud tau qhia txog qhov tsis zoo dua ...Nyeem ntxiv»
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【Tus Thawj Coj】Lub lim tiam no, qhov kev ua haujlwm tag nrho ntawm cov saw hlau propylene tau zoo dua me ntsis. Sab kev muab khoom feem ntau tseem xoob, thaum cov ntsuas kev ua haujlwm ntawm cov khoom lag luam txuas ntxiv tau nce siab. Ua ke nrog cov nyiaj tau los ntawm qee cov khoom lag luam txuas ntxiv, dow...Nyeem ntxiv»