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
441147
Polystyrene
average Mw ~350,000, average Mn ~170,000
Synonym(s):
PS
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$69.16
List Price$72.80Save 5%Estimated to ship onJuly 11, 2025Details
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About This Item
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$69.16
List Price$72.80Save 5%Estimated to ship onJuly 11, 2025Details
form
pellets
Quality Level
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)
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
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1 of 4
This Item | 182427 | 430102 | 182435 |
|---|---|---|---|
| form pellets | form beads or pellets | form beads or pellets | form pellets |
| density 1.04 g/mL at 25 °C | density 1.047 g/mL at 25 °C | density - | density 1.05 g/mL at 25 °C |
| melt index 2.0-4.0 g/10 min (200°C/5kg) | melt index - | melt index 6.0-9.0 g/10 min (200°C/5kg) | melt index - |
| mol wt average Mn ~170,000 | mol wt average Mw ~280,000 by GPC | mol wt average Mw ~192,000 | mol wt average Mn 130,000 (typical), average Mw 290,000 (typical) |
| impact strength 21 J/m (Izod, ASTM D 256, 23 °C, notched) | impact strength - | impact strength - | impact strength - |
| impurities ≤5% mineral oil | impurities - | impurities - | impurities - |
Application
Features and Benefits
Storage Class
11 - Combustible Solids
wgk_germany
WGK 3
ppe
dust mask type N95 (US), Eyeshields, Gloves
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How is shipping temperature determined? And how is it related to the product storage temperature?
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How can I determine the shelf life / expiration / retest date of this product?
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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.pdfHelpful?
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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?
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Unfortunately, the particle size is not a test specification for this product.
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What is the refractive index of product_441147 ?
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Unfortunately, the refractive index of this product is not determined.
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