Polypropylene (PP), iru ti kii ṣe majele, alaiwu, polima opalescent ti ko ni itọwo pẹlu crystallization giga, aaye yo laarin 164-170 ℃, iwuwo laarin 0.90-0.91g / cm3, iwuwo molikula jẹ nipa 80,000-150,000.PP jẹ ọkan ninu ṣiṣu ti o fẹẹrẹ julọ ti gbogbo awọn oriṣiriṣi ni lọwọlọwọ, ni iduroṣinṣin pataki ninu omi, pẹlu iwọn gbigba omi ninu omi fun awọn wakati 24 jẹ 0.01% nikan.
