Polypropylene isotactic
Polypropylene syndiotactic
IUPAC name
Other names
Polypropylene; Polypropene;
Polipropene 25 [USAN]; Propene polymers;
Propylene polymers; 1-Propene; [-Ch2-Ch(Ch3)-]n
  • none
ECHA InfoCard100.117.813
Density0.855 g/cm3, amorphous

0.946 g/cm3, crystalline

Melting point130 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).
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Infobox references

Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications. It is an addition polymer made via chain-growth polymerization from the monomer propylene. Polypropylene can be produced in a variety of structures giving rise to applications including packaging and labeling, textiles, plastic parts and reusable containers of various types, laboratory equipment, automotive components, and medical devices. It is a white, mechanically rugged material, and is resistant to many chemical solvents, bases and acids.[1]

In 2013, the global market for polypropylene was about 55 million tonnes.[2] Polypropylene is the world's second-most widely produced synthetic plastic, after polyethylene (see: commodity plastics).


Phillips Petroleum chemists J. Paul Hogan and Robert Banks first polymerized propylene in 1951.[3] Propylene was first polymerized to a crystalline isotactic polymer by Giulio Natta as well as by the German chemist Karl Rehn in March 1954.[4] This pioneering discovery led to large-scale commercial production of isotactic polypropylene by the Italian firm Montecatini from 1957 onwards.[5] Syndiotactic polypropylene was also first synthesized by Natta and his coworkers.

After polyethylene, polypropylene is the most important plastic with revenues expected to exceed US$145 billion by 2019. The sales of this material are forecast to grow at a rate of 5.8% per year until 2021.[2]

Other Languages
Afrikaans: Polipropileen
беларуская: Поліпрапілен
bosanski: Polipropilen
català: Polipropilè
čeština: Polypropylen
Deutsch: Polypropylen
español: Polipropileno
Esperanto: Polipropileno
euskara: Polipropileno
français: Polypropylène
Bahasa Indonesia: Polipropilena
íslenska: Fjölprópýlen
italiano: Polipropilene
kaszëbsczi: Pòlipropëlen
қазақша: Полипропилен
lietuvių: Polipropilenas
Bahasa Melayu: Polipropilena
Nederlands: Polypropeen
Nordfriisk: Polypropyleen
norsk: Polypropen
polski: Polipropylen
português: Polipropileno
română: Polipropilenă
русский: Полипропилен
Simple English: Polypropylene
slovenčina: Polypropylén
Basa Sunda: Polipropiléné
svenska: Polypropen
татарча/tatarça: Polipropilen
Türkçe: Polipropilen
українська: Поліпропілен
Tiếng Việt: Polypropylen
中文: 聚丙烯