430102
Polystyrene
average Mw ~192,000
Synonym(s):
PS
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About This Item
Linear Formula:
[CH2CH(C6H5)]n
CAS Number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23
MDL number:
Product Name
Polystyrene, average Mw ~192,000
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
form
beads or pellets
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)
Quality Level
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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.
General description
Hard, clear moderately strong polymer, biologically inert, good dimensional stability. Susceptible to exterior (UV) degradation.
Physical form
Thermoplastic amorphous polymer.
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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