Polypropylene, ib hom tsis muaj tshuaj lom, tsis muaj ntxhiab, tsis muaj saj opalescent polymer nrog crystallization siab, lub melting point ntawm 164-170 ℃, qhov ceev ntawm 0.90-0.91g / cm3, qhov hnyav molecular yog li 80,000-150,000. PP yog ib qho ntawm cov yas sib dua tshaj plaws ntawm txhua yam tam sim no, tshwj xeeb tshaj yog ruaj khov hauv dej, nrog rau qhov nqus dej hauv dej rau 24 teev tsuas yog 0.01%.