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441147

Sigma-Aldrich

Polystyrene

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

Synonym(e):

PS

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About This Item

Lineare Formel:
[CH2CH(C6H5)]n
CAS-Nummer:
9003-53-6
MDL-Nummer:
MFCD00084450
UNSPSC-Code:
12162002
PubChem Substanz-ID:
24867334
NACRES:
NA.23

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Form

pellets

Schmelzindex

2.0-4.0 g/10 min (200°C/5kg)

Mol-Gew.

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

Stoßfestigkeit

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

Verunreinigungen

≤5% mineral oil

Übergangstemp.

Tg 95 °C

Dichte

1.04 g/mL at 25 °C

Elongation

ASTM D 638 - 1.5% (at break)

SMILES String

c1(ccccc1)C=C

InChI

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

InChIKey

PPBRXRYQALVLMV-UHFFFAOYSA-N

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Verwandte Kategorien

Anwendung

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

Leistungsmerkmale und Vorteile

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

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 3

Persönliche Schutzausrüstung

dust mask type N95 (US), Eyeshields, Gloves

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
MKCW8307
MKCW9501
MKCT7609
MKCT7608
MKCP7904

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Polystyrol analytical standard, 90,000

Supelco

327778

Polystyrol

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

Sigma-Aldrich

427888

Polypropylen

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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
J K R Weber et al.
The Review of scientific instruments, 80(8), 083904-083904 (2009-09-04)
A single-axis acoustic levitator was constructed and used to levitate liquid and solid drops of 1-3 mm in diameter at temperatures in the range -40 to +40 degrees C. The levitator comprised (i) two acoustic transducers mounted on a rigid
Laarnie Tumolva et al.
Microscopy research and technique, 75(4), 505-512 (2011-09-16)
Morphological properties of atmospheric particles are directly related to their residence time and transport behaviors, and their deposition patterns in human respiratory systems. The projected properties of particles measured by transmission electron microscopy (TEM) were combined with the particle height
Kevin Kendall et al.
Nanotechnology, 20(27), 275701-275701 (2009-06-18)
The weak molecular attractions of nanoparticles are important because they drive self-assembly mechanisms, allow processing in dispersions e.g. of pigments, catalysts or device structures, influence disease through the attraction of viruses to cells and also cause potential toxic effects through
Prasert Akkaramongkolporn et al.
AAPS PharmSciTech, 10(2), 641-648 (2009-05-20)
The differently sulfonated styrene-divinylbenzene cross-linked copolymer cationic exchange resins were prepared by oil-in-water polymerization and varied degrees of sulfonation. Several characteristics of the obtained resins were evaluated, i.e., Fourier transform infrared spectra, the ion-exchange capacity, microscopic morphology, size, and swelling.
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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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