Khoom npe:Toluene

Molecular hom:c7h8 ua

CAS Nr:108-88-3 ib

Cov khoom siv molecular:

Chemical Properties::

Toluene, ib qho organic compound nrog cov tshuaj formula C₇H₈, yog cov kua tsis muaj xim, tsis muaj kuab lom nrog cov ntxhiab tsw ntxhiab tsw. Nws muaj zog refractive zog. Nws yog miscible nrog ethanol, ether, acetone, chloroform, carbon disulfide thiab glacial acetic acid, thiab me ntsis soluble hauv dej. Flammable, lub vapor tuaj yeem tsim qhov sib xyaw nrog huab cua, qhov ntim ntawm qhov sib xyaw tuaj yeem tawg ntawm qhov tsawg. Tsawg toxicity, LD50 (rat, qhov ncauj) 5000mg / kg. high concentration gas yog narcotic, irritating

Daim ntawv thov:

Toluene yog muab los ntawm thee tar thiab aspetroleum. Nws tshwm sim hauv cov roj av thiab ntau cov kuab tshuaj roj av. Toluene yog siv los tsim trinitrotoluene (TNT), toluene diisocyanate, thiab benzene; raws li cov khoom xyaw fordyes, tshuaj, thiab tshuaj ntxuav tes; thiab raws li industrialsolvent rau roj hmab, xim, coatings, andoils.

Toluene muaj ntau daim ntawv thov hauv kev lag luam tshuaj thiab roj av, nrog kwv yees li 6 lab tons siv txhua xyoo hauv Tebchaws Meskas thiab 16 lab tons siv thoob ntiaj teb. Kev siv loj ntawm toluene yog raws li octane booster hauv roj av. Toluene muaj qhov ntsuas octane ntawm 114. Toluene yog ib qho ntawm plaub lub ntsiab lus tseem ceeb ntawm cov tshuaj tsw qab, nrog rau benzene, xylene, thiab ethylbenzene, uas yog tsim thaum lub sij hawm refining los txhim kho cov roj av kev ua tau zoo. Ua ke, plaub lub tebchaw no yog luv ua BTEX. BTEX yog ib qho tseem ceeb ntawm cov roj av, tsim txog 18% los ntawm qhov hnyav ntawm ib qho kev sib xyaw. Txawm hais tias qhov kev faib ua feem ntawm cov tshuaj tsw qab yog sib txawv los tsim cov khoom sib txawv kom tau raws li thaj chaw thiab raws caij nyoog, toluene yog ib qho ntawm cov khoom tseem ceeb. Cov roj av ib txwm muaj kwv yees li 5% toluene los ntawm qhov hnyav.
Toluene yog thawj cov khoom noj siv los tsim ntau yam organic tebchaw. Nws yog siv los tsim diisocyanates. Isocyanates muaj cov pab pawg ua haujlwm ?N = C = O, thiab diisocyanates muaj ob ntawm cov no. Ob lub ntsiab diisocyanates yog toluene 2,4-diisocyanate thiab toluene 2,6-diisocyanate. Kev tsim cov diisocyanates nyob rau hauv North America yog ze rau ib lab lab txhua xyoo. Ntau tshaj 90% ntawm toluene diisocyanate ntau lawm yog siv los ua polyurethanes foams. Cov tom kawg yog siv los ua cov khoom siv tau yooj yim hauv cov rooj tog zaum, txaj txaj, thiab cushions.Hauv daim ntawv nruj nws yog siv rau rwb thaiv tsev, tawv plhaub txheej, cov khoom siv hauv tsev, nws pib qhov chaw, thiab cov menyuam skate log.

Hauv kev tsim cov benzoic acid, benzaldehyde, explosives, dyes, thiab ntau lwm yam organic compounds; ua ib qho hnyav rau cov xim, lacquers, pos hniav, resins; thinner rau inks, perfumes, dyes; nyob rau hauv extraction ntawm ntau yam hauv paus ntsiab lus ntawm cov nroj tsuag; raws li roj av additive.