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430102

Sigma-Aldrich

Polystyrene

average Mw ~192,000

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Synonym(s):
PS
Linear Formula:
[CH2CH(C6H5)]n
CAS Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

form

beads or pellets

Quality Level

melt index

6.0-9.0 g/10 min (200°C/5kg)

mol wt

average Mw ~192,000

refractive index

n20/D 1.59

transition temp

softening point 107 °C (Vicat, ASTM D 1525)

InChI

1S/C8H8/c1-2-8-6-4-3-5-7-8/h2-7H,1H2

InChI key

PPBRXRYQALVLMV-UHFFFAOYSA-N

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1 of 4

This Item
182427327808327794
Polystyrene average Mw ~192,000

Sigma-Aldrich

430102

Polystyrene

Polystyrene average Mw ~280,000 by GPC

Sigma-Aldrich

182427

Polystyrene

Polystyrene analytical standard, for GPC, 900,000

Supelco

327808

Polystyrene

Polystyrene analytical standard, for GPC, 400,000

Supelco

327794

Polystyrene

refractive index

n20/D 1.59

refractive index

n20/D 1.5916

refractive index

-

refractive index

-

transition temp

softening point 107 °C (Vicat, ASTM D 1525)

transition temp

Tg 100 °C

transition temp

-

transition temp

-

melt index

6.0-9.0 g/10 min (200°C/5kg)

melt index

-

melt index

-

melt index

-

mol wt

average Mw ~192,000

mol wt

average Mw ~280,000 by GPC

mol wt

average Mw 900,000 (Typical)

mol wt

average Mw 400,000 (Typical)

General description

Hard, clear moderately strong polymer, biologically inert, good dimensional stability. Susceptible to exterior (UV) degradation.

Application

Extrusion molded foamed packaging, dinnerware, bottles and toys. Injection molded packaging containers, toys and disposable cutlery.

Physical form

Thermoplastic amorphous polymer.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Matthew G Petroff et al.
Langmuir : the ACS journal of surfaces and colloids, 35(14), 4976-4985 (2019-03-21)
We report direct measurements of ionic strength-dependent interactions between different molecular weights of zwitterionic triblock copolymers adsorbed to hydrophobic colloids and surfaces. The zwitterionic copolymers investigated include phosphorylcholine [poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC)] and sulfopropylbetaine [poly(3-( N-2-methacryloyloxyethyl- N, N-dimethyl)ammonatopropanesulfonate) (PMAPS)] end blocks
Marta Kocun et al.
ACS nano, 11(10), 10097-10105 (2017-09-28)
Tapping mode atomic force microscopy (AFM), also known as amplitude modulated (AM) or AC mode, is a proven, reliable, and gentle imaging mode with widespread applications. Over the several decades that tapping mode has been in use, quantification of tip-sample
Megan Farrell et al.
Colloids and surfaces. B, Biointerfaces, 81(2), 468-475 (2010-08-31)
Dextran and polyethylene glycol (PEG) are often covalently bound to the surface of polydimethylsiloxane (PDMS) for the purpose of modifying its hydrophilicity and biocompatibility. In this work, the effects of the dextran and PEG on the morphology, wetting, and surface
Ji Yeon Ahn et al.
Journal of chromatography. A, 1217(24), 3876-3880 (2010-05-05)
The separation efficiencies of three different asymmetrical flow field-flow fractionation (AF4) channel designs were evaluated using polystyrene latex standards. Channel breadth was held constant for one channel (rectangular profile), and was reduced either linearly (trapezoidal profile) or exponentially (exponential profile)
M Jönsson-Niedziółka et al.
Lab on a chip, 11(3), 490-496 (2010-11-26)
Environmental air monitoring is of great interest due to the large number of people concerned and exposed to different possible risks. From the most common particles in our environment (e.g. by-products of combustion or pollens) to more specific and dangerous

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