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189464

Sigma-Aldrich

Poly(ethylene oxide)

average MV 4,000,000 (nominal), powder, hydroxyl, BHT as inhibitor

Sinónimos:

Polyethylene oxide, PEO

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About This Item

Fórmula lineal:
(-CH2CH2O-)n
Número de CAS:
25322-68-3
Número MDL:
MFCD00081839
Código UNSPSC:
12352104
ID de la sustancia en PubChem:
24851382
NACRES:
NA.23
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Nombre del producto

Poly(ethylene oxide), average Mv ~4,000,000 (nominal), contains <1000 ppm BHT as inhibitor

Formulario

powder

Nivel de calidad

100

mol peso

average Mv ~4,000,000 (nominal)

contiene

<1000 ppm BHT as inhibitor
100-1000 ppm BHT as inhibitor

viscosidad

1,650-5,500 cP, 1 % in H2O(25 °C, Brookfield)(lit.)

temperatura de transición

Tm 65 °C

densidad

1.21 g/mL at 25 °C

grupo funcional

hydroxyl

cadena SMILES

[H]OCCO

InChI

1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2

Clave InChI

LYCAIKOWRPUZTN-UHFFFAOYSA-N

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Descripción general

Poly (ethylene oxide) (PEO) is a crystalline thermoplastic polymer. It is usually available over a wide range of molecular weights; the higher molecular weight entities are called poly (ethylene oxide), poly-oxyethylene or polyoxirane.[1]

Aplicación

PEO may be used to afford PEO-salt complexes which are act as polymeric electrolytes to be used for alkali metal rechargeable batteries.[2] PEO-polyester micelles have been reportedly used for drug delivery.[3] PEO hydrogels have been reported to be used for culture media, replacing agar. Cross-linked PEO may be used for drug delivery and blood filtration. Compounds form association complexes with high molecular weight PEO; for example:

  • bromine combines with PEO in controlled release,
  • carboxymethyl dextran and carechol tannis form complexes with PEO to act as adhesives,
  • copolymer of methyl vinyl ether and maleic anhydride form complex with PEO for its use in microencapsulation of non aqueous inks.

Industrially, PEO may be used to modify bituminous emulsion in paving compositions and as a dispersant for calamine lotion.[1][3][2][4]

Código de clase de almacenamiento

11 - Combustible Solids

Clase de riesgo para el agua (WGK)

WGK 1

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

Eyeshields, Gloves, type N95 (US)

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Certificados de análisis (COA)

Lot/Batch Number
MKCL3736
MKCQ4018
MKCV4541
MKCD8286
MKBV8508V

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Bailey FE
Alkylene Oxides and Their Polymers null
FE Jr Bailey
Poly(Ethylene Oxide) null
Whelan T
Polymer Technology Dictionary null
Hart DS
Polyethylene Oxide-polyester Micelles for Drug Delivery null
Yi Huang et al.
Polymers, 12(5) (2020-05-21)
Controlling the rheological property of suspensions consisting of colloidal particles and polymers is necessary in industry. Especially, gels induced by shear (shake-gel) are interesting phenomena in rheological field. To gain insight into the shake-gel phenomena of the aqueous suspensions of
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Questions

1–2 of 2 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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