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441147

Sigma-Aldrich

Polystyrene

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

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

form

pellets

Quality Level

melt index

2.0-4.0 g/10 min (200°C/5kg)

mol wt

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

impact strength

21 J/m (Izod, ASTM D 256, 23 °C, notched)

impurities

≤5% mineral oil

transition temp

Tg 95 °C

density

1.04 g/mL at 25 °C

elongation

ASTM D 638 - 1.5% (at break)

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
331651182427430102
Polystyrene average Mw ~350,000, average Mn ~170,000

Sigma-Aldrich

441147

Polystyrene

Polystyrene average Mw 35,000

Sigma-Aldrich

331651

Polystyrene

Polystyrene average Mw ~280,000 by GPC

Sigma-Aldrich

182427

Polystyrene

Polystyrene average Mw ~192,000

Sigma-Aldrich

430102

Polystyrene

transition temp

Tg 95 °C

transition temp

softening point (ASTM E 28) 123-128 °C

transition temp

Tg 100 °C

transition temp

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

density

1.04 g/mL at 25 °C

density

1.06 g/mL at 25 °C

density

1.047 g/mL at 25 °C

density

-

melt index

2.0-4.0 g/10 min (200°C/5kg)

melt index

-

melt index

-

melt index

6.0-9.0 g/10 min (200°C/5kg)

mol wt

average Mn ~170,000

mol wt

average Mw 35,000

mol wt

average Mw ~280,000 by GPC

mol wt

average Mw ~192,000

impact strength

21 J/m (Izod, ASTM D 256, 23 °C, notched)

impact strength

-

impact strength

-

impact strength

-

Application

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

Features and Benefits

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

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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25G
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705578-5MG-PW

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MMYOMAG-74K-13

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