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Merck

202371

Sigma-Aldrich

Poly(ethylene glycol)

average Mn 300, hydroxyl

Synonym(s):

Polyethylene glycol, PEG

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MXP 1,299.00
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MXP 25,031.00

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250 G
MXP 1,299.00
500 G
MXP 1,346.00
1 KG
MXP 2,078.00
20 KG
MXP 25,031.00

About This Item

Linear Formula:
H(OCH2CH2)nOH
CAS Number:
MDL number:
UNSPSC Code:
12352104
PubChem Substance ID:
NACRES:
NA.23

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MXP 1,299.00


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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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1 of 4

This Item
8126020239881300
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

Polyethylene glycol (PEG) is a hydrophilic polymer. It can be easily synthesized by the anionic ring opening polymerization of ethylene oxide, into a range molecular weights and variety of end groups. When crosslinked into networks, PEG can have high water content, forming "hydrogels". Hydrogel formation can be initiated by either crosslinking PEG by ionizing radiation or by covalent crosslinking of PEG macromers with reactive chain ends. PEG is a suitable material for biological applications because it does not trigger an immune response.

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

dust mask type N95 (US), Eyeshields, Gloves

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Questions

1–5 of 5 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

      Helpful?

  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

      Helpful?

  3. What is the liquid assay concentration?

    1 answer
    1. The product is a pure liquid with a concentration of 100%.

      Helpful?

  4. Quelle est la densité de ce PEG à 20°C ?

    1 answer
    1. The density of this product is listed in the 'PROPERTIES' section as 1.125 g/mL at 25 °C.

      Helpful?

  5. What is the assay concentration of the liquid? 100%?

    1 answer
    1. This product is a neat or pure liquid with a concentration of 100 %.

      Helpful?

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