Propylene glycol CAS: 57-55-6
Chiyambi cha malonda
Dzina la sayansi la propylene glycol ndi "1,2-propanediol". The racemate ndi hygroscopic viscous madzi ndi kukoma pang'ono zokometsera. Imasungunuka m'madzi, acetone, ethyl acetate ndi chloroform, komanso kusungunuka mu ether. Zosungunuka m'mafuta ambiri ofunikira, koma osasunthika ndi petroleum ether, parafini ndi mafuta. Imakhala yokhazikika pakutentha ndi kuwala, ndipo imakhala yokhazikika pakatentha kwambiri. Propylene glycol imatha kukhala oxidized mu propionaldehyde, lactic acid, pyruvic acid ndi acetic acid pa kutentha kwambiri.
Propylene glycol ndi diol ndipo imakhala ndi ma alcohols ambiri. Amakhudzidwa ndi ma organic acid ndi ma inorganic acid kuti apange ma monoesters kapena diesters. Imakhudzidwa ndi propylene oxide kupanga ether. Imakhudzidwa ndi hydrogen halide kupanga ma halohydrin. Imasanganikirana ndi acetaldehyde kupanga methyldioxolane, wopanda mtundu, viscous ndi madzi okhazikika omwe amayamwa madzi, pafupifupi osakoma komanso osanunkhiza. Zosakaniza ndi madzi, Mowa ndi zosungunulira zosiyanasiyana organic.
Munda wofunsira
Amagwiritsidwa ntchito ngati zopangira zopangira ma resin, ma plasticizer, ma surfactants, emulsifiers ndi demulsifiers, komanso antifreeze ndi zonyamula kutentha.
Kufotokozera za zomangamanga
Propylene glycol
CAS: 57-55-6
Molecular formula C3H8O2
Kulemera kwa molekyulu 76.09
Nambala ya EINECS 200-338-0
Malo osungunuka -60 °C (kuyatsa)
Malo otentha 187 ° C (lit.)
Kachulukidwe 1.036 g/mL pa 25 °C (lit.)
Kuchuluka kwa nthunzi 2.62 (vs mpweya)
Kuthamanga kwa nthunzi 0.08 mm Hg (20 °C)
Refractive index n20 /D 1.432(lit.
Kusungirako ndi mayendedwe
Kulongedza: malinga ndi zomwe kasitomala amafuna
Kusungirako: Sungani pamalo owuma, amdima ndi mpweya wabwino.
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