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430102

Polystyrene

average Mw ~192,000

Synonym(s):

PS

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About This Item

Linear Formula:
[CH2CH(C6H5)]n
CAS Number:
9003-53-6
UNSPSC Code:
12162002
PubChem Substance ID:
24866910
NACRES:
NA.23
MDL number:
MFCD00084450
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form

beads or pellets

Quality Level

100

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)

SMILES string

c1(ccccc1)C=C

InChI

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

InChI key

PPBRXRYQALVLMV-UHFFFAOYSA-N

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.

Features and Benefits

  • Medium molecular weight (~192,000 Mw) balancing excellent mechanical strength and processability, making it suitable for varied applications.
  • Beads or pellets form allows for easy handling, processing, and uniform melting in manufacturing processes.
  • Melt index of 6.0–9.0 g/10 min (200°C/5kg) provides good flow characteristics, enabling efficient molding and extrusion.

Physical form

Thermoplastic amorphous polymer.

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Storage Class

11 - Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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