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441147

Sigma-Aldrich

Polystyrene

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

Synonyme(s) :

PS

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About This Item

Formule linéaire :
[CH2CH(C6H5)]n
Numéro CAS:
9003-53-6
Numéro MDL:
MFCD00084450
Code UNSPSC :
12162002
ID de substance PubChem :
24867334
Nomenclature NACRES :
NA.23

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Forme

pellets

Niveau de qualité

100

Indice de fusion

2.0-4.0 g/10 min (200°C/5kg)

Poids mol.

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

Résistance à l'impact

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

Impuretés

≤5% mineral oil

Température de transition

Tg 95 °C

Densité

1.04 g/mL at 25 °C

Élongation

ASTM D 638 - 1.5% (at break)

Chaîne SMILES 

c1(ccccc1)C=C

InChI

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

Clé InChI

PPBRXRYQALVLMV-UHFFFAOYSA-N

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Catégories apparentées

Application

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

Caractéristiques et avantages

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

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Équipement de protection individuelle

dust mask type N95 (US), Eyeshields, Gloves

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Certificats d'analyse (COA)

Lot/Batch Number
MKCW8307
MKCW9501
MKCT7609
MKCT7608
MKCP7904

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327778

Polystyrene

Polypropylene Isotactic, average Mw ~250,000, average Mn ~67,000

Sigma-Aldrich

427888

Polypropylene

Päivi Grönroos et al.
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
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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Articles

Electrospinning: Enabling Nanostructured Materials

Electrospinning technique applications discussed, emphasizing control of nanofibers and assembly into 3D architectures.

Questions

1–4 of 4 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 dimension has one pellet? I am looking for a particle between 1 - 5 mm in length and width? May do you know the density?

    1 answer

    1. Unfortunately, the particle size is not a test specification for this product.

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  4. What is the refractive index of product_441147 ?

    1 answer

    1. Unfortunately, the refractive index of this product is not determined.

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