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P3265

Sigma-Aldrich

Poly(ethylene glycol)

average MN 400

Synonym(s):

Polyethylene glycol, PEG

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About This Item

Linear Formula:
H(OCH2CH2)nOH
CAS Number:
25322-68-3
MDL number:
MFCD00081839
UNSPSC Code:
12352104
PubChem Substance ID:
24897878
NACRES:
NA.23
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Product Name

Poly(ethylene glycol), average mol wt 400

form

liquid

Quality Level

200

mol wt

average mol wt 400

refractive index

n/D 1.465 (20 °C)

viscosity

7.3 cSt (210 °F)

mp

4-8 °C

solubility

water: 100 mg/mL

density

1.1254 g/cm3 at 20 °C
1.0930 g/cm3 at 60 °C

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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General description

Poly(ethylene glycol) (PEG) is an oligomer of ethylene oxide that is majorly used as a synthetic polymer for its unique properties which include low cost, biocompatibility, and hydrophilicity. It can be used in the production of biomedical hydrogels.[1][2][3]

Application

PEG has a variety of biomedical applications, applications in energy storage and drug delivery.[4][5]

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
WXBF5115V
MKCV3615
MKCS2904
MKCV1837
MKCT7525

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Biomedical hydrogels
Biomaterials, Artificial Organs and Tissue Engineering, 107-115 (2005)
Vanessa Martínez-Francés et al.
Frontiers in pharmacology, 8, 467-467 (2017-08-10)
In Valencia Region (Spain), some wild and cultivated sages are used for medicinal purposes. Among them
Takuya Nakayama et al.
Developmental biology, 426(2), 472-486 (2016-09-07)
We describe a novel recessive and nonlethal pigmentation mutant in Xenopus tropicalis. The mutant phenotype can be initially observed in tadpoles after stage 39/40, when mutant embryos display markedly reduced pigmentation in the retina and the trunk. By tadpole stage
Entrapment of essential oils in hydrogels for biomedical applications
Polymeric Gels, 125-141 (2018)
Hydrogels in craniofacial tissue engineering
Biomaterials for Oral and Dental Tissue Engineering, 47-64 (2017)
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Questions

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  1. 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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  2. 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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