Polystyrene

Product Information

Molecular Formula:
(C8H8)x
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.
Synonyms
Benzene, ethenyl-, homopolymer; Styrene, polymers; Poly(vinylbenzene); Polyflex (vinyl polymer); PS 100 (styrene polymer); Styrafoil; Styrene homopolymer; Styrene polymer; Styrene-N,N,N',N'-tetramethylethylenediamine copolymer
Boiling Point
30-80°C
Melting Point
240°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
1.04-1.13 g/cm3
Appearance
Beads or pellets
Application
Extrusion molded foamed packaging, dinnerware, bottles and toys.
Storage
Store at RT
Refractive Index
1.5916
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).
LogP
2.95 (LogP);2.95;log Kow = 2.95;2.95;3.0
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
Henry's Law Constant
0.00275 atm cu m/mole at 25 °C
Decomposition
Hazardous decomposition products formed under fire conditions - Carbon oxides.
Odor
Characteristic, sweet, balsamic, almost floral odor that is extremely penetrating

Safety Information

Hazards
Harmless-use normal precautions
Handling
Exercise normal care
Precautionary Statement
P262
Molecular WeightDescription
~ 100,000 Solvent-soluble (aromatic hydrocarbons, chlorinated hydrocarbons,
tetrahydrofuran, esters). Mw/Mn ~ 1.06
~ 30,000,000 Solvent-soluble (aromatic hydrocarbons, chlorinated hydrocarbons,
tetrahydrofuran, esters). Mw/Mn ~ 1.30
~ 1,000 Solvent-soluble (aromatic hydrocarbons, chlorinated hydrocarbons,
tetrahydrofuran, esters). Mw/Mn ~ 1.30
~ 20,000 Solvent-soluble (aromatic hydrocarbons, chlorinated hydrocarbons, tetrahydrofuran, esters. Mw/Mn ~ 1.06
~ 600 Solvent-soluble (aromatic hydrocarbons, chlorinated hydrocarbons, tetrahydrofuran, esters. Mw/Mn ~ 1.30
~ 20,000,000 Solvent-soluble (aromatic hydrocarbons, chlorinated hydrocarbons, tetrahydrofuran, esters. Mw/Mn ~ 1.20
~ 9,000 Solvent-soluble (aromatic hydrocarbons, chlorinated hydrocarbons,
tetrahydrofuran, esters). Mw/Mn ~ 1.04

Computed Properties

XLogP3
2.9
Hydrogen Bond Donor Count
0
Hydrogen Bond Acceptor Count
0
Rotatable Bond Count
1
Exact Mass
104.062600255 g/mol
Monoisotopic Mass
104.062600255 g/mol
Topological Polar Surface Area
0Ų
Heavy Atom Count
8
Formal Charge
0
Complexity
68.1
Isotope Atom Count
0
Defined Atom Stereocenter Count
0
Undefined Atom Stereocenter Count
0
Defined Bond Stereocenter Count
0
Undefined Bond Stereocenter Count
0
Covalently-Bonded Unit Count
1
Compound Is Canonicalized
Yes

Patents

Publication Number Title Priority Date
CN-113620834-A Allium macrostemon medicinal material extract, extraction method, preparation method and application 2021-07-08
US-2022081559-A1 Resin composition and article made therefrom 2020-09-15
JP-2021172656-A Metal complexes, compositions and light emitting devices 2020-04-21
WO-2021215210-A1 Metal complex, composition and light emitting element 2020-04-21
WO-2021115489-A1 Novel heterocyclic derivatives with cardiomyocyte proliferation activity for treatment of heart diseases 2019-12-14
JP-2021088665-A Polymer compounds and light emitting devices using them 2019-12-04
US-2020247926-A1 Polymerizable monomer, polymer compound for conductive polymer, and method for producing the polymer compound 2019-01-31
KR-20200081837-A Low specific gravity sheet molding compound 2018-12-28
JP-2020068306-A Light emitting element 2018-10-25
JP-6672518-B1 Light emitting element 2018-10-25

Literatures

PMID Publication Date Title Journal
34668566 2021-12-28 Associations Between Residential Exposure to Volatile Organic Compounds and Liver Injury Markers Toxicological sciences : an official journal of the Society of Toxicology
34324853 2021-09-25 1,3-Butadiene, styrene and selected outcomes among synthetic rubber polymer workers: Updated exposure-response analyses Chemico-biological interactions
33064461 2020-11-03 Identifying the Transcriptional Response of Cancer and Inflammation-Related Genes in Lung Cells in Relation to Ambient Air Chemical Mixtures in Houston, Texas Environmental science & technology
28951217 2017-11-15 Assessing molecular initiating events (MIEs), key events (KEs) and modulating factors (MFs) for styrene responses in mouse lungs using whole genome gene expression profiling following 1-day and multi-week exposures Toxicology and applied pharmacology
28678435 2017-10-01 Molecular mechanisms of action of styrene toxicity in blood plasma and liver Environmental toxicology
28962520 2017-10-01 Editor's Highlight: Complete Attenuation of Mouse Lung Cell Proliferation and Tumorigenicity in CYP2F2 Knockout and CYP2F1 Humanized Mice Exposed to Inhaled Styrene for up to 2 Years Supports a Lack of Human Relevance Toxicological sciences : an official journal of the Society of Toxicology
26505805 2016-07-01 In Utero and Early-Life Exposure to Ambient Air Toxics and Childhood Brain Tumors: A Population-Based Case-Control Study in California, USA Environmental health perspectives
26463279 2015-12-02 Subcellular localization of rat CYP2E1 impacts metabolic efficiency toward common substrates Toxicology
26343807 2015-11-05 1,3-Butadiene, styrene and lymphohematopoietic cancer among male synthetic rubber industry workers--Preliminary exposure-response analyses Chemico-biological interactions
25562543 2015-03-04 Influence of genetic polymorphisms of styrene-metabolizing enzymes on the levels of urinary biomarkers of styrene exposure Toxicology letters
The molarity calculator equation

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

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