Catalog Number
ACM9003536-56
Product Name
POLY(STYRENE)
Description
Insoluble in water and less dense than water. Contact may cause irritate skin, eyes, and mucous membranes. May be toxic by ingestion.;Styrene monomer, stabilized appears as a clear colorless to dark liquid with an aromatic odor. Vapors heavier than air and irritating to the eyes and mucous membranes. Subject to polymerization. If the polymerization takes place inside a closed container, the container may rupture violently. Less dense than water and insoluble in water. Used to make plastics, paints, and synthetic rubber.;GasVapor; Liquid; PelletsLargeCrystals; PelletsLargeCrystals, Liquid;Liquid;Liquid;COLOURLESS-TO-YELLOW OILY LIQUID.;COLOURLESS SOLID IN VARIOUS FORMS.;Colorless to yellow, oily liquid with a sweet, floral odor.;Colorless to yellow, oily liquid with a sweet, floral odor.
Molecular Weight
104.15g/mol
Canonical SMILES
C=CC1=CC=CC=C1
InChI
InChI=1S/C8H8/c1-2-8-6-4-3-5-7-8/h2-7H,1H2
InChI Key
PPBRXRYQALVLMV-UHFFFAOYSA-N
Boiling Point
293 to 295 °F at 760 mm Hg (NTP, 1992);145.0 °C;145.3 °C;145 °C;293°F;293°F
Melting Point
464 °F (NTP, 1992);-24 to -23 °F (NTP, 1992);-31.0 °C;Mp -33 °;-30.65 °C;-33°C;-30.6 °C;240 °C;-23°F;-23°F
Flash Point
88 °F (NTP, 1992);32.0 °C (89.6 °F) - closed cup;88 °F (31 °C) - closed cup;34.4 °C (Tag closed cup); 36.7 °C (Tag open cup).;31 °C c.c.;345-360 °C;88°F;88°F
Density
1.04 to 1.65 at 68 °F (NTP, 1992);0.906 at 68 °F (USCG, 1999);d20 0.91;0.9016 g/cu cm at 25 °C;Relative density (water = 1): 0.91;Relative density (water = 1): 1.04-1.13;0.91;0.91
Solubility
less than 1 mg/mL at 66° F (NTP, 1992);0.00 M;0.31 mg/mL at 25 °C;In water, 300 mg/L at 25 °C;Insoluble in water;Soluble in ethanol, ether, and acetone; miscible with benzene; slightly soluble in carbon tetrachloride;Soluble in carbon disulfide, alcohol, ether, methanol, acetone;Miscible with benzene;Soluble in ... toluene, ethanol, n-heptane, carbon tetrachloride ...;0.31 mg/mL at 25 °C;Solubility in water, g/100ml at 20 °C: 0.03;0.03%
Application
Poly(styrene) serves as a versatile material with a wide range of applications due to its distinctive properties. Its primary purpose is to act as a clear, glass-like material ideal for thermal and electrical insulation, packaging, and decorative uses. Manufactured by free-radical polymerization of styrene, poly(styrene) is predominantly utilized in various industries due to its high heat resistance and dimensional stability. Despite being brittle at room temperature, it softens at around 80°C and is often modified through copolymerization to enhance flexibility. This adaptability allows it to remain a key material in applications like capacitor films, coaxial-cable insulation, and numerous packaging and molded products. Its low moisture absorption ensures that fabricated parts retain their dimensions and strength even in humid environments, making it ideal for items ranging from household appliances to automotive parts. Additionally, the polymer's nontoxicity and resistance to fungus and bacteria contribute to its suitability for food container closures and disposable filters.
Color/Form
Colorless to yellowish, oily liquid;Viscous liquid
Corrosivity
Styrene will corrode copper and copper alloys
Covalently-Bonded Unit Count
1
EC Number
202-851-5;500-008-9;614-500-7;619-344-3
Heat of Vaporization
10.50 kcal/mol at 25 °C
Log P
2.95 (LogP);2.95;log Kow = 2.95;2.95;3.0
MeSH Entry Terms
Monomer, Styrene;Styrene;Styrene Monomer;Styrol;Vinylbenzene
Monoisotopic Mass
104.0626g/mol
Odor
Characteristic, sweet, balsamic, almost floral odor that is extremely penetrating;Aromatic odor;Sweet, floral odor;If pure, sweet and pleasant, but usually contains aldehydes that have a typical penetrating smell, sharp, sweet, and unpleasant.
Other Experimental
Percent in saturated air at 760 mm Hg & 15 °C: 0.57; density of saturated vapor-air mixture at 760 mm Hg & 15 °C: 1.02 (Air = 1);Heat of polymerization: -154 cal/g (-6.35X10+5 J/kg);Styrene dissolves rubber;Latent heat of fusion: 10.95 kJ/mole (at melting point); Latent heat of sublimation: 43.9 kJ/mole (25 °C); Heat of formation: 103.8 kJ/mole (25 °C); Ionization potential: 8.42 eV;When heated to 200 °C it is converted into polymer, polystyrene, which is clear plastic having excellent insulating properties even at ultrahigh radio frequencies.;Enthalpy, 24.83 kcal/mol (liquid), 35.22 kcal/mol (gas); Gibbs (free) energy of formation, 48.37 kcal/mol (liquid), 51.10 kcal/mol (gas); entropy, 56.78 cal/deg/mol (liquid), 82.48 cal/deg/mol (gas); heat capacity, 43.64 cal/deg/mol (liquid), 29.18 cal/deg/mol (gas);Liquid molar volume = 0.115714 cu m/kmol; Heat of formation = 1.4736E+08 J/kmol; Heat of fusion at melting pt = 1.0950E+07 J/kmol;Henry's Law constant = 0.00275 atm cu m/mole at 25 °C;Hydroxyl radical reaction rate constant = 5.8X10-11 cu cm/molecule-sec at 25 °C
Refractive Index
n20D 1.5463;Index of refraction: 1.5440 at 25 °C
RTECS Number
WL3675000;WL6475000
Stability
Stable under recommended storage conditions. Test for peroxide formation before distillation or evaporation. Test for peroxide formation or discard after 1 year.;On exposure to light and air it slowly undergoes polymerization and oxidation with formation of peroxides, etc..;It is a storage hazard above 32 °C.;... Styrene is stabilized by a polymerization inhibitor (often tertbutylcatechol). If this is not present in adequate concn, styrene can polymerize and explode its container. The polymerization is also speeded up by temperatures above 66 °C (150 °F).
UN Number
2211;2055;2055;2055;2055;2055
Vapor Density
3.6 (Air = 1);Relative vapor density (air = 1): 3.6
Vapor Pressure
4.3 mm Hg at 59 °F ; 9.5 mm Hg at 86° F; 10 mm Hg at 95° F (NTP, 1992);6.40 mmHg;6.40 mm Hg at 25 °C;Vapor pressure, kPa at 20 °C: 0.67;5 mmHg;5 mmHg
Viscosity
0.696 cP at 25 °C
