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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
441147182427327808
Polystyrene average Mw ~192,000

Sigma-Aldrich

430102

Polystyrene

Polystyrene average Mw ~350,000, average Mn ~170,000

Sigma-Aldrich

441147

Polystyrene

Polystyrene average Mw ~280,000 by GPC

Sigma-Aldrich

182427

Polystyrene

Polystyrene analytical standard, for GPC, 900,000

Supelco

327808

Polystyrene

refractive index

n20/D 1.59

refractive index

-

refractive index

n20/D 1.5916

refractive index

-

transition temp

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

transition temp

Tg 95 °C

transition temp

Tg 100 °C

transition temp

-

melt index

6.0-9.0 g/10 min (200°C/5kg)

melt index

2.0-4.0 g/10 min (200°C/5kg)

melt index

-

melt index

-

mol wt

average Mw ~192,000

mol wt

average Mn ~170,000, average Mw ~350,000

mol wt

average Mw ~280,000 by GPC

mol wt

average Mw 900,000 (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.
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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
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