Perchlorethylene (Tetrachloroethylene, PCE) yog halogenated hydrocarbon nrog cov tshuaj formula C₂Cl₄. Nws cov yam ntxwv tseem ceeb ntawm cov tshuaj yog raws li nram no:
Chemical Inertness:
Nyob rau hauv chav tsev kub, PCE yog ruaj khov nyob rau hauv lub xub ntiag ntawm dej, dilute acids, thiab alkalis, thiab nws tsis yooj yim undergo hydrolysis los yog oxidation. Txawm li cas los xij, hauv cov alkalis muaj zog (xws li sodium hydroxide hauv dej cawv), nws tuaj yeem raug dehalogenation cov tshuaj tiv thaiv, tsim trichlorethylene thiab lwm yam khoom.
Photolysis Reaction:
Raws li cov hluav taws xob ultraviolet, C₂Cl₄ maj mam decomposes los tsim cov khoom nruab nrab xws li trichloroacetyl chloride (CCl₃COCl) thiab dichloroacetyl chloride (CCl₂HCOCl), uas tuaj yeem tso cov roj chlorine ntxiv (Cl₂) lossis tsim phosgene (COCl₂).
Thermal stability:
Thaum qhov kub thiab txias (siab tshaj 150 degree) los yog thaum lub sij hawm combustion, tetrachlorethylene decomposes, tso pa phem xws li phosgene (COCl₂), hydrogen chloride (HCl), thiab chlorine (Cl₂). Yog li ntawd, nws yuav tsum tau khaws cia kom deb ntawm cov nplaim taws.
Hlau Corrosivity:
Ntawm qhov kub siab, perchloroethylene (PCE) tuaj yeem corrode reactive hlau xws li txhuas thiab magnesium, thiab cov dej noo tuaj yeem ua kom qhov corrosion ntxiv.
Solvent Properties:
Raws li cov kuab tshuaj nonpolar,perchloroethylene (PCE)muaj peev xwm yaj cov roj, waxes, roj hmab, thiab lwm yam polymers, thiab tau dav siv nyob rau hauv qhuav tu thiab industrial degreasing daim ntaub ntawv.