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427772

Sigma-Aldrich

Polyethylene

average Mw ~4,000 by GPC, average Mn ~1,700 by GPC

Sinônimo(s):

PE

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250 G
R$ 500,00
1 KG
R$ 1.143,00

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250 G
R$ 500,00
1 KG
R$ 1.143,00

About This Item

Fórmula linear:
H(CH2CH2)nH
Número CAS:
9002-88-4
Número MDL:
MFCD00084423
Código UNSPSC:
12162002
ID de substância PubChem:
24866779
NACRES:
NA.23

R$ 500,00

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Formulário

powder

Nível de qualidade

100

peso molecular

average Mn ~1,700 by GPC
average Mw ~4,000 by GPC

viscosidade

1.5 poise(25 °C, Brookfield Thermosel)(lit.)

pf

92 °C

número de acidez

<0.05 mg KOH/g

temperatura de transição

softening point 106 °C (ring and ball)

densidade

0.92 g/mL at 25 °C

cadeia de caracteres SMILES

C=C

InChI

1S/C2H4/c1-2/h1-2H2

chave InChI

VGGSQFUCUMXWEO-UHFFFAOYSA-N

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Categorias relacionadas

Aplicação

Mold release additive, lubricant in rubber processing, extrusion and calendering aid for PVC and dispersing aid for color concentrates.PEG-4000 may be used as a precipitant during protein fractionation and virus precipitation.[1]Influence of PEG of various molecular weights on mammalian cell hybridization.[2]

Características e benefícios

Low molecular weight and viscosity for easy processing.

Código de classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 3

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

Eyeshields, Gloves, type N95 (US)

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Certificados de análise (COA)

Lot/Batch Number
MKCW2074
MKCT6767
MKCT5408
MKCP9612
MKCQ9709

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Se precisar de uma versão específica, você pode procurar um certificado específico pelo número do lote ou da remessa.

Pesquise por COA

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Sigma-Aldrich

434264

Polyethylene

Polypropylene Isotactic, average Mw ~250,000, average Mn ~67,000

Sigma-Aldrich

427888

Polypropylene

Reduced cortical neurotransmitPolyethylene glycol-induced mammalian cell hybridization: Effect of polyethylene glycol molecular weight and concentration.
Davidson RL, et al.
Somatic Cell Genetics, 2(3), 271-280 (1976)
A method for the estimation of polyethylene glycol in plasma protein fractions, Analytical Biochemistry
Sims GEC and Snape TJ
Analytical Biochemistry, 107(1), 60-63 (1980)
Lisa K McCarthy et al.
Pediatrics, 132(1), e135-e141 (2013-06-19)
Hypothermia on admission to the NICU is associated with increased mortality in preterm infants. Many newborns are hypothermic on admission despite using polyethylene bags (PBs). Using exothermic mattresses (EMs) in addition to PBs may reduce hypothermia but increase hyperthermia. We
Melody Yee-Man Wong et al.
Rapid communications in mass spectrometry : RCM, 27(6), 713-721 (2013-02-19)
Despite various porous materials having been widely adopted as spraying tips for direct sample analysis using electrospray ionization mass spectrometry (ESI-MS), the effect of surface property and porosity of spraying tip materials on their analytical performances is not clear. Investigation
Agnieszka Karbownik et al.
Acta poloniae pharmaceutica, 70(2), 301-307 (2013-04-26)
The study concerned the stability of calcium folinate in concentrate in glass vials and diluted in polyethylene (PE) bags stored at 15-25 degrees C and 2-8 degrees C for up to 34 days. Original vials of calcium folinate injection (10
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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

      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. May I know the average particle size of this product?

    1 answer

    1. The exact particle size has not been determined. However, 99.5% to 100% of the powder passes through an 18 mesh screen (18 mesh = 1.0 mm).

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