Shaanxi BLOOM Tech Co., Ltd. yog ib qho ntawm cov tuam ntxhab thiab cov muag khoom ntawm naphthalene hmoov cas 91-20-3 hauv Suav teb. Txais tos rau cov lag luam wholesale bulk zoo naphthalene hmoov cas 91-20-3 muag ntawm no los ntawm peb lub hoobkas. Kev pabcuam zoo thiab tus nqi tsim nyog muaj.
Naphthalene hmoov, qhov yooj yim tshaj plaws condensed aromatic hydrocarbon, nrog rau cov mis C10H8, yog tsim los ntawm ob lub nplhaib benzene sib koom ob cov pa roj carbon atoms. Dawb crystalline hmoov, yooj yim rau volatilize, nrog me ntsis aromatic tsw, thiab crude naphthalene muaj coal tar tsw. Insoluble hauv dej, tab sis soluble hauv ethanol, ether thiab benzene. Nws yog soluble hauv feem ntau cov kuab tshuaj organic xws li benzene, toluene, xylene, acetic acid, tetrahydronaphthalene, ether, acetone, carbon tetrachloride, carbon disulfide, methanol, ethanol, thiab lwm yam. Dyes xws li indigo xiav thiab nitroalizarin xiav uas yog insoluble nyob rau hauv cov organic solvents ntawm chav tsev kub yuav soluble nyob rau hauv molten naphthalene. Naphthalene dissolves feem ntau cov tebchaw uas muaj phosphorus, sulfur thiab iodine. Solubility ntawm naphthalene hauv dej yog tsawg heev. Naphthalene yog dav siv los ua raw khoom rau kev npaj dyes, resins, cov kuab tshuaj, thiab lwm yam, thiab kuj yog tshuaj tua kab.
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Tshuaj Formula |
C10H8 |
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Exact Mass |
128 |
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Molecular Luj |
128 |
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m/z |
128 (100.0%), 129 (10.8%) |
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Elemental Analysis |
C, 93.71; H, 6.29 |
Naphthalene hmoov, nrog cov mis mos molecular C10H8, yog qhov yooj yim tshaj plaws polycyclic aromatic hydrocarbon tsim los ntawm ob qho tib si carbon atoms fused ua ke los ntawm ob lub nplhaib benzene. Nws yog xim dawb los tawm dawb crystalline hmoov nrog lub melting point ntawm 80.5℃thiab lub boiling point ntawm 218 degree. Nws muaj cov ntxhiab tsw tshwj xeeb, yooj yim sublimated, thiab yog insoluble hauv dej tab sis soluble hauv ethanol thiab ether. Nws yog cov qauv tshuaj tshwj xeeb no uas ua rau naphthalene muaj zog heev reactivity - nws yog feem ntau rau electrophilic hloov cov tshuaj tiv thaiv, thiab nws cov kev ua ub no tseem siab dua li ntawm benzene rings.
Lub hom phiaj tseem ceeb:
Kev siv loj tshaj plaws, tsis ntseeg, yog kev tsim cov phthalic anhydride (abbreviated li phthalic anhydride). Thoob plaws ntiaj teb, kwv yees li 70% ntawm naphthalene siv rau hauv cov kev taw qhia no, ua rau nws yog "qhov tseem ceeb" ntawm naphthalene noj.
Phthalic anhydride yog dab tsi? Nws yog ib qho tseem ceeb raw khoom rau plasticizers, unsaturated polyester resins, thiab alkyd resins. Siv vanadium pentoxide ua ib qho catalyst thiab huab cua ua oxidant ntawm qhov kub thiab txias, naphthalene tuaj yeem ncaj qha oxidized rau phthalic anhydride. Qhov kev hloov dua siab tshiab no yog qhov siab thiab cov txheej txheem yog qhov paub tab, ua rau nws txoj kev hloov pauv nyiaj txiag zoo tshaj plaws rau naphthalene.
Cov khoom lag luam qis ntawm phthalic anhydride muaj qhov dav dav: cov khoom siv yas yog siv los ua cov yas xws li PVC, ua rau lawv hloov tau; Unsaturated polyester cob yog siv dav hauv fiberglass, yachts, thiab tsheb qhov chaw; Alkyd resin yog cov khoom siv tseem ceeb hauv kev lag luam txheej. Nws tuaj yeem hais tias tsis muaj txoj hauv kev naphthalene phthalic anhydride, cov niaj hnub plastics, txheej, thiab cov ntaub ntawv sib xyaw ua lag luam yuav poob ib qho tseem ceeb.
Nws yog ib qho tsim nyog sau cia tias phthalic anhydride tuaj yeem tsim cov phthalimide ntxiv, uas tuaj yeem siv los tsim ntau yam khoom muaj nqis - ntxiv tshuaj, suav nrog qee yam khoom siv yas thiab cov khoom siv. Cov saw txuas ntxiv no ua rau tus nqi ntawm naphthalene nce mus rau qhov siab - kawg.
Dye kev lag luam
Nws tuav txoj haujlwm tseem ceeb hauv kev lag luam dyeing. Siv naphthalene ua raw khoom, muaj ntau yam kev ua haujlwm xws li sulfonation, nitration, txo qis, amination, thiab hydrolysis tuaj yeem tsim los tsim ntau yam tseem ceeb xws li - naphthol, - naphthol, thiab naphthylamine. Cov khoom nruab nrab no yog cov khoom siv tseem ceeb rau kev sib xyaw anthraquinone dyes, reactive dyes, dispersants, thiab dej reducers.
Tshwj xeeb:
- Naphthol: Nws yog lub hauv paus rau kev tsim azo dyes thiab naphthol AS series dyes, dav siv hauv textile dyeing thiab luam ntawv.
Naphthalene sulfonate: Naphthalene hloov mus rau hauv naphthalene sulfonate los ntawm sulfonation cov tshuaj tiv thaiv, uas tom qab ntawd reacts nrog formaldehyde los ua naphthalene sulfonate formaldehyde condensate. Cov tebchaw no tsis yog tsuas yog diffusion agents thiab dispersants nyob rau hauv dyeing ntau lawm, tab sis kuj yog cov tseem ceeb Cheebtsam ntawm cov pob zeb dej reducers - lawv muaj peev xwm ua tau zoo txhim kho cov yas deformation muaj peev xwm ntawm pob zeb tsis txo nws lub zog, thiab hu ua "super yas khoom".
Diffuser thiab dej reducer: Hauv kev tsim kho, naphthalene raws li dej reducer yog tam sim no yog ib qho ntawm cov khoom siv dav tshaj plaws - cov dej txo qis, uas tuaj yeem txhim kho lub zog thiab kav ntev ntawm cov pob zeb thiab yog ib qho tseem ceeb ntxiv rau hauv kev tsim kho niaj hnub no.
Kev siv naphthalene hauv kev lag luam dye nws txawv ntawm cov teb chaws. Cov teb chaws uas muaj cov xim tsawg dua, xws li Tebchaws Meskas, muaj kev siv ntau dua ntawm naphthalene hauv kev coj noj coj ua ntawm cov tshuaj tua kab, qhia txog qhov sib txawv hauv cheeb tsam ntawm kev siv naphthalene.
Kev kho mob teb
Nws kuj plays lub luag hauj lwm irreplaceable nyob rau hauv kev lag luam kws tshuaj. Derivatives ntawm naphthalene, xws li naphthalene sulfonate tebchaw, yog cov tseem ceeb intermediates nyob rau hauv synthesis ntawm ntau yam tshuaj.
Tsis yog steroidal anti-cov tshuaj tiv thaiv kab mob (NSAIDs): Naphthalene yog ib qho tseem ceeb raw khoom rau cov synthesis ntawm antipyretic thiab analgesic tshuaj xws li indomethacin. Indomethacin yog siv dav siv los tiv thaiv - tshuaj tiv thaiv kab mob thiab tshuaj tua kab mob hauv kev kho mob, thiab nws cov pob txha molecular muaj lub nplhaib naphthalene.
Cov tshuaj Naphthylamine: Naphthylamine tuaj yeem tsim los ntawm naphthalene los ntawm ntau cov tshuaj tiv thaiv, thiab siv ntxiv los ua cov tshuaj tua kab mob, tshuaj tua kab mob, thiab lwm yam tshuaj.
Alkaloids thiab kws tshuaj intermediates:Naphthalene hmoovkuj tuaj yeem siv los npaj ntau yam alkaloid tebchaw, muab cov molecular molecular nplua nuj rau kev tsim tshuaj tshiab.
Nws tuaj yeem hais tau tias naphthalene tsis yog tsuas yog cov khoom siv tshuaj lom neeg xwb, tab sis kuj yog "molecular Lego" ntawm cov kws kho mob niaj hnub no - nws muab cov pob txha muaj ntxhiab tsw ruaj khov, uas cov kws tshuaj tsim muaj ntau yam ntawm cov tshuaj molecules.
Roj hmab thiab yas kev lag luam
Kev siv cov naphthalene hauv kev lag luam roj hmab thiab yas feem ntau yog tsom rau ob qho kev qhia: roj hmab los tiv thaiv - cov neeg ua haujlwm laus thiab cov yas yas.
Rubber anti-aging agent: Naphthalene derivatives yog cov ntaub ntawv tseem ceeb rau kev tsim cov roj hmab los tiv thaiv - cov neeg ua haujlwm laus. Cov khoom siv roj hmab xws li cov log tsheb, hoses, thiab cov ntsaws ruaj ruaj tuaj yeem muaj hnub nyoog thiab tawg vim oxidation thaum siv. Naphthalene raws li kev tiv thaiv kev laus - cov neeg ua haujlwm laus tuaj yeem ncua cov txheej txheem no thiab ua kom lub neej ntev ntawm cov khoom siv roj hmab.
Plasticizers thiab resins: Naphthalene sulfonate formaldehyde condensate tuaj yeem siv los ua plasticizers thiab curing agents hauv yas thiab resin manufacturing, endowing cov ntaub ntawv nrog kev ua zoo dua thiab txhua yam khoom. Tsis tas li ntawd, naphthalene kuj yog ib qho tseem ceeb raw khoom rau zus tau tej cov hluavtaws resins, plasticizers, thiab surfactants, dav siv nyob rau hauv coatings, inks, thiab cov khoom yas.
Cov pej xeem thiab siv txhua hnub
Thaum nws los txog rau naphthalene, ntau tus neeg thawj cov tshuaj tiv thaiv yog "cov pob huv huv". Yog lawm, qhov zoo tshaj plaws -paub pej xeem siv naphthalene yog los tsim cov pob camphor (kab tshuaj tua kab). Cov cuab yeej sublimation yooj yim ntawm naphthalene tso cai rau nws kom tsis tu ncua tso pa tawm, ua kom muaj txiaj ntsig zoo ntawm cov kab tsuag thiab ntsaum hauv lub wardrobe.
Txawm li cas los xij, nws yuav tsum raug sau tseg tias xyoo 1993, Tuam Tshoj tau txwv tsis pub siv thiab muag tshuaj naphthalene.
Qhov laj thawj yog vim li cas naphthalene muaj qee yam tshuaj toxicity - qhov qis tshaj koob tshuaj tuag (LDLo) rau tib neeg yog 100mg / kg (cov menyuam yaus) thiab 29mg / kg (cov neeg laus) qhov ncauj, thiab LD50 rau nas yog 490mg / kg ntawm qhov ncauj. Lub sij hawm ntev raug rau qhov tsis tshua muaj siab tuaj yeem ua rau muaj kev nce siab hauv siab transaminase, ua rau lub siab ua haujlwm tsis zoo, thiab muaj kev cuam tshuam tsis zoo rau cov ntshav. Yog li ntawd, niaj hnub tshuaj tua kab hauv tsev tau maj mam hloov los ntawm lwm txoj kev nyab xeeb xws li dichlorobenzene.
Tsis tas li ntawd, naphthalene kuj tseem siv los ua tawv tawv los tiv thaiv pwm thiab tiv thaiv ntoo, thiab tseem muaj qee yam kev siv hauv kev lag luam.
Electronics thiab Emerging Fields
Daim ntawv thov ntawm naphthalene hauv kev lag luam hluav taws xob yog feem ntau cuam tshuam hauv kev tsim cov khoom siv hluav taws xob xws li capacitors thiab resistors. Lub siab vapor ceev (4.4, txheeb ze rau huab cua) thiab ruaj khov electrochemical zog ntawm naphthalene muab nws qhov tshwj xeeb zoo hauv qee yam khoom siv hluav taws xob tshwj xeeb.
Qhov tseem ceeb tshaj yog kev txiav - ntug daim ntawv thov ntawm naphthalene - PEN (polyethylene naphthalate).
PEN yog lub siab -kev ua tau zoo engineering yas nrog superior tshav kub tsis kam, thaiv cov khoom, thiab txhua yam muaj zog piv rau PET zoo tib yam. Nyiv suav hais tias PEN yog thaj chaw tseem ceeb ntawm kev xav tau kev loj hlob yav tom ntej rau naphthalene, thiab nws txoj kev loj hlob nyob ntawm qib ntawm kev ua tiav hauv kev tsim khoom. Tam sim no, ntau lub tuam txhab thoob ntiaj teb tab tom tshawb nrhiav thiab tsim PEN cov txheej txheem ntau lawm. Thaum cov thev naus laus zis loj tuaj, qhov kev thov rau naphthalene yuav ua rau muaj kev loj hlob tshiab.
Kev npaj ntawmnaphthalene hmoov:
Naphthalene suav txog kwv yees li 8% mus rau 12% ntawm siab -kub thee tar. Distillation ntawm thee tar, txiav cov kerosene, tshem tawm phenol thiab quinoline, thiab distillation kom tau tiav naphthalene. Txhua tons ntawm naphthalene siv 10 tons ntawm thee tar.
Catalytic hloov pauv roj, catalytic tawg lub teeb voj voog roj, tar los ntawm -cov khoom los ntawm kev tawg mus rau hauv ethylene, thiab lwm yam.
Naphthalene siv hauv kev lag luam raw khoom yog txias sai rau hauv lub thawv crystallization, tom qab ntawd txias mus rau 82℃C, uniformly txias, thiab tom qab ntawd txias ntawm 2℃C / h rau 60℃C. Thawj thawj zaug, naphthalene siv lead ua roj nplua nuj nyob rau hauv sulfones yog tawm raws li nruab nrab distillate rau post- kho.
Tom qab ntawd, cov khoom siv hauv lub thawv crystallization yog rhuab ntawm tus nqi ntawm 4℃C / h, kuaj txhua 0.5 teev, thiab nws cov crystallization point yog ntsuas.
Raws li cov ntsiab lus sib txawv crystallization, lawv raug tso tawm mus rau hauv cov khoom siv distillation sib xws, yog li 3-4 fractional crystallization tuaj yeem nqa tawm kom tau txais kev ua kom zoo nkauj zoo nkauj naphthalene.
Cov txheej txheem ntau lawm suav nrog cov voj voog loj raws li cov voj voog ntau lawm. Txhua lub voj voog loj muaj plaub lub voj voog, nrog rau txhua lub voj voog uas muaj 4-6 ntu.
Txhua theem muaj peb theem: crystallization, ib nrab melting, thiab tag nrho melting. Piv txwv ntawm cov txheej txheem ntog zaj duab xis crystallization: Cov kua muaj naphthalene xa tawm los ntawm chav tsev naphthalene raug xa mus rau hauv lub tank distillate.
Thaum lub sijhawm ua haujlwm thib plaub crystallization tiav, cov kua dej hauv lub tank yog pumped rau hauv lub tank dynamic crystallization sau.
Uncrystalline naphthalene roj thiab hws tau muab tso rau hauv lub tank distillation nrog qis purity, thiab tag nrho cov yaj tuaj yeem siv los ua raw khoom rau qib tsib.
Tom qab rau theem crystallization, naphthalene tuaj yeem tau los ntawm kev ua kom zoo raws li cov txheej txheem ua ntej.
Txhawm rau txhim kho tus nqi rho tawm ntawm naphthalene, feem ntau ntawm thionaphthalene tuaj yeem xa mus rau qhov zoo li qub crystallizer rau kev kho mob. Cov khoom lag luam crystallization zoo li qub yuav raug xa rov qab mus rau qhov sib thooj distillation tank ntawm dynamic crystallization system, thiab cov kua residual yuav raug muag raws li tus neeg saib xyuas dej. Vim tias kev siv tib lub sijhawm ntawm cov khoom siv hluav taws xob zoo li qub thiab zoo li qub crystallizers hauv lub cuab yeej, tsis tsuas yog tuaj yeem txhim kho tus nqi naphthalene, tab sis kev siv hluav taws xob kuj tuaj yeem txo.
Tshuaj lom neeg ntawm naphthalene:
Ib qho oxidant me me yields quinone, thiab muaj zog oxidant yields anhydride. Naphthalene nplhaib yog yooj yim rau oxidized tshaj sab saw, yog li naphthoic acid tsis tuaj yeem npaj los ntawm sab saw oxidation. Cov nplhaib uas muaj hluav taws xob siab huab cua yog yooj yim rau oxidized. Piv txwv li - Nitro naphthalene yog oxidized rau 3-nitrophthalic anhydride, - Naphthylamine yog oxidized rau phthalic anhydride (lub nplhaib ntawm amino pawg yog oxidized).
Naphthalene tuaj yeem ntxiv nrog 5 hydrogen los tsim decalin.
Naphthalene - Qhov sib piv me ntsis - Cov tshuaj tiv thaiv electrophilic hloov pauv ntau dua yuav tshwm sim nyob rau hauv . - Ob qho tib si ntawm ob lub resonances muaj tiav benzene rings . - Tsuas muaj ib hom resonance nrog ua tiav benzene nplhaib.
Kev hloov hluav taws xob feem ntau tshwm sim ntawm lub nplhaib naphthalene, uas yog tib yam li lub nplhaib benzene (yooj yim hloov, nyuaj rau ntxiv), tab sis muaj zog dua li lub nplhaib benzene.
Pib los ntawm C ntawm ib sab mus rau ob qhov sib luag C hauv nruab nrab (ob qho tib si hauv nruab nrab tsis suav). Ntawm lawv, carbon 1, 4, 5 thiab 8 muaj tib yam kev ua haujlwm (hu ua Carbon), Tsis muaj . 2, 3, 6 thiab 7 carbon muaj tib yam khoom (hu ua Carbon).
Nquag, Carbon kev ua haujlwm ntau dua Carbon, hloov pauv hauv Qhov no yog tswj los ntawm kev hloov pauv. Thaum kub yog siab naphthalene hmoov. Cov khoom hloov pauv ntawm cov pa roj carbon yuav raug xa mus rau On carbon.
Txawm li cas los xij, Friedel Crafts acylation cov tshuaj tiv thaiv ntawm naphthalene generates Bitsum A sib tov ntawm cov khoom. Yog tias nitromethane siv los ua hnyav, nws tsuas yog tsim cov khoom Acylation.
Cov lus nug nquag
Naphthalene tsw zoo li cas?
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Naphthalene-cov tshuaj nquag nyob rau hauv cov kab npauj npauj ib txwm muaj- muaj zog, sib txawv heev, thiab tshuaj tsw qab. Nws yog feem ntau piav raws li hnov tsw ntse thiab acrid, nrog pom zoo sib xws rau cov roj av, ntoo tar, los yog cov tshuaj chlorine hnyav los ntawm lub pas dej da dej hauv tsev.
Lub npe hu ua naphthalene yog dab tsi?
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Naphthalene feem ntau cov npe hauv cov khoom siv niaj hnub yog npauj npaim thiab npauj npauj. Hauv kev lag luam thiab tshuaj lom neeg, nws feem ntau hu ua dawb tar, tar camphor, los yog naphthalin.
Puas yog npauj npaim zoo ib yam li naphthalene?
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Mothballs hauv Teb Chaws Asmeskas muaj ntau cov tshuaj naphthalene los yog paradichlorobenzene ua cov khoom xyaw nquag. Lawv txhais tau tias yuav tsum tau siv rau hauv cov thawv kaw, airtight kom cov pa taws uas lawv tsim tau raug kaw. Cov fumes uas nyob rau hauv thiab tua tej khaub ncaws npauj nyob rau hauv.
Dab tsi yog naphthalene siv rau?
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Naphthalene yog ib qho muaj zog - ntxhiab tsw, flammable dawb cov khoom siv feem ntau yog siv los ua ib lub tsev thaiv kev lag luam thiab cov khoom muaj nyob hauv cov tshuaj tua kab.
Puas yog naphthalene muaj teeb meem rau tib neeg?
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Yog lawm, naphthalene yog tshuaj lom rau tib neeg. Kev kis tau mus rau qib siab -txawm yog los ntawm kev ua pa hauv vapors, kov nws, lossis yuam kev nqos nws- tuaj yeem ua rau muaj kev mob hnyav thiab sai sai.
Cim npe nrov: Naphthalene hmoov CAS 91-20-3, lwm tus neeg, manufacturers, hoobkas, lag luam wholesale, yuav, nqe, tej, kev muag khoom