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445878

Sigma-Aldrich

Poly(ethylene glycol) dimethyl ether

average MN 250, cross-linking reagent click chemistry

Synonym(s):

Polyethylene glycol, Dimethyl polyethylene glycol

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About This Item

Linear Formula:
CH3O(CH2CH2O)nCH3
CAS Number:
24991-55-7
MDL number:
MFCD00147972
UNSPSC Code:
12162002
PubChem Substance ID:
24868206
NACRES:
NA.23
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Product Name

Poly(ethylene glycol) dimethyl ether, average Mn ~250

form

liquid

mol wt

average Mn ~250

reaction suitability

reagent type: cross-linking reagent
reaction type: click chemistry

refractive index

n20/D 1.441

bp

>250 °C

density

1.03 g/mL at 25 °C

polymer architecture

shape: linear
functionality: homobifunctional

SMILES string

CO.OCCO

InChI

1S/C4H10O2/c1-5-3-4-6-2/h3-4H2,1-2H3

InChI key

XTHFKEDIFFGKHM-UHFFFAOYSA-N

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Application


  • Paper Title: Molecular dynamics simulations for self-diffusion coefficients: The case of CO2, n-alkanes, and poly(ethylene glycol) dimethyl ethers - Studies self-diffusion coefficients using molecular dynamics simulations to provide insights into the behavior of poly(ethylene glycol) dimethyl ethers (OA Moultos et al., 2016).

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

312.8 °F - closed cup

Flash Point(C)

156.00 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
WXBD5478V
WXBD2811V
WXBD0058V
WXBC7683V
WXBC4681V

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Questions

1–3 of 3 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 is the viscosity of this material at room temperature?

    1 answer

    1. The viscosity is not tested (and therefore, guaranteed) for this material, but there is another product with the same average molecular weight offered (https://www.sigmaaldrich.com/product/mm/814173), which does have a viscosity value listed, which is 7.8 cSt (20 °C). The viscosity of product 445878 should be similar.

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