Kev qhia roj nplua
Cov khoom ntshiab yog cov xim tsis muaj pob tshab, uas yog daj ntseg daj thaum nws muaj impurities. Ntxub yaim. Qhov kub npau npau yog 180-310 ° C (tsis yog tsis kiag li, thiab nws feem ntau yuav tsum tau hloov pauv raws li cov kev mob tshwj xeeb thaum lub sijhawm ua khoom muag). Qhov hnyav nruab nrab molecular yog nruab nrab ntawm 200 txog 250. Qhov ceev yog ntau dua 0.84 g / cm3. Lub teeb nyem yog siab tshaj 40 ° C. Lub kinematic viscosity ntawm 40 ° C yog 1.0 txog 2.0 hli 2 / s. Insoluble hauv dej, soluble hauv cawv thiab lwm cov organic solvents. nrov nchav. yooj yim. Tom qab hloov mus, nws yog sib xyaw nrog huab cua los ua cov tshuaj sib tov. Qhov qhib tawg yog 2-3%. Ua kom tiav kev sib xyaw, tag nrho qhov ci ci, lub nplaim hluav taws xob ruaj khov, tsis muaj pa taws dub, tsis muaj pob taws, tsis muaj qhov tsis pom tseeb, tsis muaj kuab paug rau ib puag ncig.