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331651

Sigma-Aldrich

Polystyrene

average Mw 35,000

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:
24859987
NACRES:
NA.23

form

beads or pellets

mol wt

average Mw 35,000

transition temp

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

density

1.06 g/mL at 25 °C

InChI

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

InChI key

PPBRXRYQALVLMV-UHFFFAOYSA-N

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General description

Polystyrene is a high molecular weight synthetic polymer made from the polymerization of styrene. It is durable, thermoplastic, and hydrophobic in nature.

Application

Polystyrene(PS) can be used as a precursor to synthesize dye-doped fluorescent PS nanoparticles, which can be applied in the field of optical microscopy, cell tracking, and optical sensors.

It can be used to stabilize the perovskite component by forming PS-capped perovskite grains. This PS coverage can suppress the organic component evaporation, and water corrosion and promotes crystal self-healing of perovskite films.

Due to its optical clarity, low production cost, and ease ofmanufacture, it is widely used as a fundamental substrate for in vitrocell culture.

Features and Benefits

  • Thermal efficiency
  • Durability
  • Moisture resistance

Physical form

Bimodal.

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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Certificates of Analysis (COA)

Lot/Batch Number
MKCP8072
MKCN4744
MKCL6607
MKCG5477
MKCG5475

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Hiroyuki Yanagisawa et al.
Molecules (Basel, Switzerland), 23(4) (2018-03-23)
This study was conducted with the aim of achieving the simultaneous screening of various additives in polymer materials by utilizing a solvent-free pyrolyzer/thermal desorption gas chromatography mass spectrometry (Py/TD-GC-MS) method. As a first step to achieve this goal, simultaneous screening
Jelena Stanković et al.
Environmental pollution (Barking, Essex : 1987), 262, 114248-114248 (2020-03-15)
The effect of microplastics (MP) exposure on the chironomid species Chironomus riparius Meigen, 1804 was investigated using the OECD sediment and water toxicity test. Chironomid larvae were exposed to an environmentally relevant low microplastics concentration (LC), a high microplastics concentration
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
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
Sanghee Kim et al.
Journal of nanoscience and nanotechnology, 9(12), 7171-7176 (2009-11-17)
Bare and surface modified polystyrene nanoparticles with an anionic sulfate end group were synthesized by emulsion polymerization for adsorption of a protein (immunoglobulin G, IgG) by passive adsorption and electrostatic attraction for application as a biosensor. Dynamic light scattering (DLS)
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Questions

1–3 of 3 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  3. What is the number molecular weight of this polystyrene? Do you have a GPC cromatogram of this polystyrene?

    1 answer

    1. This product has an approximate molecular weight of 35,000. In regards to the GPC Chromatogram, please navigate to the link https://www.sigmaaldrich.com/techservice, click on "Product Technical Inquiries" under the Products Section with all the required information so that a member of the Technical Service team can reach out to assist further. Thank you.

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