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/418/501/product-dating-information-06-25-mk.pdf
427772
Polyethylene
average Mw ~4,000 by GPC, average Mn ~1,700 by GPC
Synonym(s):
PE
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
250 g | Check Cart for Availability | $69.80 |
1 kg | Check Cart for Availability | $171.00 $128.25 |
About This Item
$69.80
form
powder
Quality Segment
mol wt
average Mn ~1,700 by GPC, average Mw ~4,000 by GPC
feature
hydrophobic
viscosity
1.5 poise(25 °C, Brookfield Thermosel)(lit.)
mp
92 °C
acid number
<0.05 mg KOH/g
transition temp
softening point 106 °C (ring and ball)
density
0.92 g/mL at 25 °C
SMILES string
C=C
InChI
1S/C2H4/c1-2/h1-2H2
InChI key
VGGSQFUCUMXWEO-UHFFFAOYSA-N
Application
Features and Benefits
1 of 1
This Item | |||
|---|---|---|---|
| description average Mw ~4,000 by GPC, average Mn ~1,700 by GPC | description analytical standard, suitable for gel permeation chromatography (GPC), 2,000 | description Medium density | description Ultra-high molecular weight, surface-modified, powder, 125 μm avg. part. size |
| viscosity 1.5 poise(25 °C, Brookfield Thermosel)(lit.) | viscosity - | viscosity - | viscosity - |
| form powder | form - | form powder | form powder |
| density 0.92 g/mL at 25 °C | density - | density 0.94 g/mL at 25 °C | density 0.94 g/mL at 25 °C |
| mp 92 °C | mp - | mp 109-111 °C | mp 146 °C |
| transition temp softening point 106 °C (ring and ball) | transition temp - | transition temp - | transition temp Tm (DSC) 146 °C (at peak) |
| mol wt average Mn ~1,700 by GPC, average Mw ~4,000 by GPC | mol wt Mn ~1790, Mp ~2030, Mw ~2010 | mol wt - | mol wt (Ultra-high molecular weight) |
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Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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
Helpful?
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May I know the average particle size of this product?
1 answer-
The exact particle size has not been determined. However, 99.5% to 100% of the powder passes through an 18 mesh screen (18 mesh = 1.0 mm).
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