Polypropylene

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.

Polypropylene (PP)

Names
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	9003-07-0 Y
ChemSpider	None
ECHA InfoCard	100.117.813
CompTox Dashboard (EPA)	DTXSID00872805
Properties
Chemical formula	(C3H6)n
Density	0.855 g/cm3, amorphous 0.946 g/cm3, crystalline
Melting point	130 to 171 °C (266 to 340 °F; 403 to 444 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references

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.

It can be formed into a thin thread and woven into a strong strap, often used on backpacks, bags, and other things.

In 2008, the global market for polypropylene had a volume of 45.1 million metric tons, which led to a turnover of about $65 billion (€47.4 billion).