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441147

Sigma-Aldrich

Polystyrene

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

Synonym(s):

PS

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About This Item

Linear Formula:
[CH2CH(C6H5)]n
CAS Number:
9003-53-6
MDL number:
MFCD00084450
UNSPSC Code:
12162002
PubChem Substance ID:
24867334
NACRES:
NA.23

form

pellets

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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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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Polystyrene analytical standard, for GPC, 90,000

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327778

Polystyrene

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Sigma-Aldrich

427888

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Sensors (Basel, Switzerland), 19(12) (2019-06-30)
Novel hot electron-emitting working electrodes and conventional counter electrodes were created by screen printing. Thus, low-cost disposable electrode chips for bioaffinity assays were produced to replace our older expensive electrode chips manufactured by manufacturing techniques of electronics from silicon or
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)
Keiji Hirota et al.
Colloids and surfaces. B, Biointerfaces, 87(2), 293-298 (2011-06-28)
Our previous results on the phagocytic activity of alveolar macrophages (Mϕs) toward poly(lactic-co-glycolic) acid microspheres (PLGA MS) loaded with the anti-tuberculosis agent rifampicin (R-PLGA MS) suggest that the phagocytosis of R-PLGA MS enhances the phagocytic activity of Mϕ cells. To
Chongyang Shen et al.
Journal of contaminant hydrology, 134-135, 1-11 (2012-05-12)
This study examined the detachments of nano- and micro-sized colloids from primary minima in the presence of cation exchange by laboratory column experiments. Colloids were initially deposited in columns packed with glass beads at 0.2 M CaCl(2) in the primary
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