CAS 9003-53-6 Polystyrene - Materials / Alfa Chemistry

NAVIGATION

Polystyrene

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Catalog Number

ACM9003536-78

CAS Number

9003-53-6

Product Name

Polystyrene

Structure

Category

Polystyrene (PS)

Synonyms

Description

average Mw ~280,000 by GPC

IUPAC Name

styrene

Molecular Weight

average MW ~280,000 by GPC

Molecular Formula

[CH2CH(C6H5)]n

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)

Melting Point

212 °C

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

1.047 g/mL at 25 °C (lit.)

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%

Appearance

beads or pellets

Application

Polystyrene can be added to nanocatalyst suspension to prepare a polystyrene-photocatalyst thick film. This film can be used as a photoanode in an airlift photocatalytic fuel cell (APFC).Polystyrene can be used as a precursor to prepare graphene film and 3D graphene sponges by pyrolysis under argon atmosphere. The filmogenic property of polystyrene can be exploited to prepare 3D graphene sponges with uniform pore sizes.It can also be used to prepare dyed polystyrene (PS) film for routine dosimetry in radiation processing. Dyed PS film has high post-irradiation stability.

Storage

room temp

AutoIgnition Temperature

800 °F (NTP, 1992);914 °F (USCG, 1999);914 °F (490 °C);490 °C;427 °C

Color/Form

Colorless to yellowish, oily liquid;Viscous liquid

Complexity

68.1

Composition

21 J/m (Izod, ASTM D 256, 23 °C),≤5% mineral oil

Corrosivity

Styrene will corrode copper and copper alloys

Covalently-Bonded Unit Count

EC Number

202-851-5;500-008-9;614-500-7;619-344-3

Exact Mass

104.0626g/mol

Form

powder

Formal Charge

Heat of Vaporization

10.50 kcal/mol at 25 °C

Heavy Atom Count

ICSC Number

0073;1043

Log P

2.95 (LogP);2.95;log Kow = 2.95;2.95;3.0

MDL Number

MFCD00084450

MeSH Entry Terms

Monomer, Styrene;Styrene;Styrene Monomer;Styrol;Vinylbenzene

Monoisotopic Mass

104.0626g/mol

NSC Number

62785

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

Packaging

1 g in glass bottle

Refractive Index

n20/D n20/D 1.5916 (lit.)

Rotatable Bond Count

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).

Transition Temperature

Tg 100 °C

UNII

44LJ2U959V

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