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
202371
Poly(ethylene glycol)
average Mn 300, hydroxyl
Synonym(s):
Polyethylene glycol, PEG
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Product Name
Poly(ethylene glycol), average Mn 300
form
viscous liquid
Quality Level
mol wt
Mn 285-315
average Mn 300
refractive index
n20/D 1.463
pH
6-7 (23 °C, at 10 g/l)
viscosity
5.8 cSt(210 °F)(lit.)
mp
−15-−8 °C (lit.)
density
1.125 g/mL at 25 °C
Mw/Mn
1.1 (typical)
Ω-end
hydroxyl
α-end
hydroxyl
SMILES string
C(CO)O
InChI
1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2
InChI key
LYCAIKOWRPUZTN-UHFFFAOYSA-N
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Related Categories
1 of 4
This Item | 81260 | 202398 | 81300 |
|---|---|---|---|
| form viscous liquid | form flakes | form viscous liquid | form flakes |
| Quality Level 200 | Quality Level 300 | Quality Level 200 | Quality Level 200 |
| mol wt Mn 285-315, average Mn 300 | mol wt Mn 5,000-7,000, average Mn 6,000 | mol wt Mn 380-420, average Mn 400 | mol wt average Mn 20,000 |
| mp −15-−8 °C (lit.) | mp 60-63 °C | mp 4-8 °C (lit.) | mp 63-66 °C |
| density 1.125 g/mL at 25 °C | density - | density 1.128 g/mL | density - |
| refractive index n20/D 1.463 | refractive index - | refractive index n20/D 1.466 | refractive index - |
General description
Application
- PEG modification increases thermostability and inhibitor resistance of Bst DNA polymerase.: This study demonstrates that polyethylene glycol (PEG) modification significantly enhances the thermostability and inhibitor resistance of Bst DNA polymerase, highlighting PEG′s potential in improving enzyme performance for biotechnological applications (Yang et al., 2024).
- Development of Lyophilized Eukaryotic Cell-Free Protein Expression System Based on Leishmania tarentolae.: The incorporation of PEG in the lyophilization process of a cell-free protein expression system demonstrates its role in enhancing the stability and efficiency of biotechnological workflows (Alfaro-Palma et al., 2024).
- A comprehensive review on singlet oxygen generation in nanomaterials and conjugated polymers for photodynamic therapy in the treatment of cancer.: This review highlights the application of PEGylated nanomaterials in photodynamic therapy, emphasizing its significance in improving biocompatibility and therapeutic efficacy in cancer treatments (Singh et al., 2024).
Storage Class Code
10 - Combustible liquids
WGK
WGK 1
Flash Point(F)
428.0 °F - closed cup
Flash Point(C)
220.00 °C - closed cup
Personal Protective Equipment
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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 is the liquid assay concentration?
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The product is a pure liquid with a concentration of 100%.
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Quelle est la densité de ce PEG à 20°C ?
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The density of this product is listed in the 'PROPERTIES' section as 1.125 g/mL at 25 °C.
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What is the assay concentration of the liquid? 100%?
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This product is a neat or pure liquid with a concentration of 100 %.
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