Catalog Number
ACM25085534
Product Name
Polypropylene
Category
Hydrophobic Polymers
Synonyms
1-Propene, homopolymer, isotactic;1-Propene,homopolymer,isotactic;isotactic;isotacticpolypropene;propyleneresin(med.m.wt.);PROPYLENE, ISOTACTIC RESIN;PROPYLENE RESIN;POLYPROPYLENE, ATACTIC
Description
Propylene is a colorless gas with a faint petroleum like odor. It is shipped as a liquefied gas under its own vapor pressure. For transportation it may be stenched. Contact with the liquid can cause frostbite. It is easily ignited. The vapors are heavier than air. Any leak can either be liquid or vapor. It can asphyxiate by the displacement of air. Under prolonged exposure to fire or intense heat the containers may rupture violently and rocket. It is used to make other chemicals. Can cause explosion.;GasVapor; GasVapor, Liquid; Liquid;GasVapor; Liquid;COLOURLESS COMPRESSED LIQUEFIED GAS.;Colorless gas with a faint petroleum like odor.
Molecular Weight
42.08g/mol
Molecular Formula
C3H6;CH2CHCH3;CH3CHCH2;C3H6
InChI
InChI=1S/C3H6/c1-3-2/h3H,1H2,2H3
InChI Key
QQONPFPTGQHPMA-UHFFFAOYSA-N
Boiling Point
-53.9 °F at 760 mm Hg (NTP, 1992);-48.0 °C;-47.68 °C;-48 °C;-53.9°F
Melting Point
-301.4 °F (NTP, 1992);-185.0 °C;-185.30 °C;-185 °C;-301.4°F
Flash Point
-162 °F (NTP, 1992);-162 °F (-108 °C);Flammable gas;-162°F
Density
0.609 at -52.6 °F (USCG, 1999);0.5139 at 20 °C/4 °C (liquid);Relative density (water = 1): 0.5;0.609 at -52.6°F
Solubility
44.6 mL/100 mL (NTP, 1992);0.00 M;In water, 200 mg/L at 25 °C;In water, 44.6 mL gas/100 mL at 20 °C;Very soluble in water;Very soluble in ethanol, acetic acid;Soluble in ethanol (1250 mL/100 mL), acetic acid (524.5 mL/100 mL);Soluble in alcohol, ether;Moderately soluble in alcohol;Solubility in water: poor
Application
Polypropylene serves as a versatile low-density resin that provides a balanced combination of thermal, chemical, and electrical properties, along with moderate strength. Its strength can be significantly enhanced with the addition of reinforcing agents such as glass fiber. Despite its limited heat resistance, polypropylene is suitable for applications that require exposure to boiling water or steam sterilization. It is resistant to chemical attacks from aqueous solutions of inorganic salts and mineral acids and bases, even at high temperatures, and remains unaffected by most organic substances at room temperature. However, it is vulnerable to halogens, fuming nitric acid, other active oxidizing agents, and aromatic and chlorinated hydrocarbons at elevated temperatures. The resin is translucent and autoclavable, and its properties can be refined by incorporating fillers, blending with synthetic elastomers, or copolymerizing with small amounts of other monomers. Polypropylene also serves as a modifier for waxes to reduce blocking, scuffing, and abrasion, and enhances pigment dispersion in films and fibers. It is uniquely similar to polyethylene in structure, yet can be formed into thinner films, making it an ideal material for applications such as impregnated capacitors where reduced electrical loss is advantageous.
Covalently-Bonded Unit Count
1
EC Number
204-062-1;271-735-4;292-050-7;607-534-9;619-168-7
Heat of Vaporization
18.42 kJ/mol at BP
Log P
1.77 (LogP);log Kow = 1.77;1.77
MeSH Entry Terms
isopropylidene;propene;propylene
Monoisotopic Mass
42.04695g/mol
Odor
Practically odorless; aromatic;Faint, petroleum-like
Other Experimental
Density: 1.49 (Air = 1.0) (triple point);Critical volume: 184 cu cm/mol;Density: 0.505 g/cu cm at 25 °C (pressure >1 atm );Index of refraction: 1.3567 at -40 °C/D;Index of refraction: 1.3567 at -70 °C;VP: 10 atm at 19.8 °C;Surface tension: 16.7 dynes/cm at 90 °C;Heat of fusion: 717.6 cal/mol; burns with yellow sooty flame; liquefies at 7-8 atm; dipole moment: 0.35;Ratio of specific heats of vapor (gas): 1.152; Floats and boils on water;Henry's Law constant = 1.96X10-1 atm-cu m/mole at 25 °C;Hydroxyl radical reaction rate constant = 2.90X10-11 cu cm/molecule-sec at 25 °C;Ozone reaction rate constant = 1.2X10-17 cu cm/molecule-sec at 25 °C (est)
Stability
Stable under recommended storage conditions.
UN Number
1077;1077;1077;1077
Vapor Density
1.46 at 32 °F (NTP, 1992) (Relative to Air);1.46 (Air = 1.0) at 0 °C;Relative vapor density (air = 1): 1.5;4.46
Vapor Pressure
1 mm Hg at -205.4 °F ; 760 mm Hg at -53.9° F (NTP, 1992);8.69e+03 mmHg;8.69X10+3 mm Hg at 25 °C /Extrapolated/;Vapor pressure, kPa at 25 °C: 1158;1 mmHg at -205.4°F
Viscosity
83.4 micropoises at 16.7 °C
