Polypropylene (PP) | |
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IUPAC name | Poly(1-methylethylene) P |
Other names | Polypropylene; Polypropene; Polipropene 25 [USAN]; Propene polymers; Propylene polymers; 1-Propene; [-Ch2-Ch(Ch3)-]n |
Identifiers | |
CAS number | |
Properties | |
Molecular formula | (C3H6)n |
Density | 0.855 g/cm3, amorphous 0.946 g/cm3, crystalline |
Melting point | 130 to 171 °C, Expression error: Unrecognized word "to". K, Expression error: Unrecognized word "to". °F |
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
Polypropylene (PP), or polypropene, is a type of plastic. It is a thermoplastic polymer which can be made into a fibre for yarn and fabric, film for packaging, or many other shapes.
As a plastic it can be made translucent but usually is opaque and often brightly colored. It is tough, and resists many solvents, acids and bases.