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重要文件

P5413

Sigma-Aldrich

聚(乙二醇)

for molecular biology, average mol wt 8,000

同義詞:

聚环氧乙烷, PEG

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About This Item

線性公式:
H(OCH2CH2)nOH
CAS號碼:
MDL號碼:
分類程式碼代碼:
12352104
PubChem物質ID:
NACRES:
NA.31
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等級

for molecular biology

品質等級

形狀

powder

分子量

average mol wt 8,000

溶解度

water: soluble (approximately 630 mg/ml, 20 °C)

密度

1.0845 g/mL at 70 °C
1.0689 g/mL at 90 °C

異物活動

DNase, RNase and NICKase, none detected

SMILES 字串

C(CO)O

InChI

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

InChI 密鑰

LYCAIKOWRPUZTN-UHFFFAOYSA-N

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一般說明

聚乙二醇(PEG)是环氧乙烷和水通过缩合反应产生的聚合物。[1]当暴露在空气中时,PEG易被氧化降解。尽量减少PEG暴露于高度和/或暴露于氧气或添加抗氧化剂,可以限制降解量。PEG在储存过程中不会水解或变质。PEG不支持霉菌生长。[2]
聚乙二醇(PEG)被用于洗涤剂、乳化剂、香皂、金属加工过程、药物制剂和化妆品中。[1]PEG常被用作润滑剂。它也被用于色谱的固定相中。[2]PEG可防止乳液中的晶体形成。[3]

應用

聚乙二醇已被用于:
  • 原生质体悬浮液[4]
  • 防止乳液发生相分离[3]
  • 噬菌体尾样颗粒沉淀[5]
  • 纯化和增强聚合酶链反应的产物[6]

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)


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分析證明 (COA)

Lot/Batch Number

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John M Murray
Journal of microscopy, 267(2), 193-213 (2017-03-23)
The ability to replace genes coding for cellular proteins with DNA that codes for fluorescent protein-tagged versions opens the way to counting the number of molecules of each protein component of macromolecular assemblies in vivo by measuring fluorescence microscopically. Converting
Associations between HLA class I alleles and escape mutations in the hepatitis B virus core gene in New Zealand-resident Tongans
Abbott William GH, et al.
Journal of Virology, 84(1), 621-629 (2010)
Genes for the biosynthesis of the fungal polyketides hypothemycin from Hypomyces subiculosus and radicicol from Pochonia chlamydosporia
Reeves CD
Applied and Environmental Microbiology, 74(16), 5121-5129 (2008)
Induction and Purification of C. difficile Phage Tail-Like Particles
Clostridium difficile, 167-175 (2016)
Retinol encapsulated into amorphous Ca2+ polyphosphate nanospheres acts synergistically in MC3T3-E1 cells
Muller Werner EG, et al.
European Journal of Pharmaceutics and Biopharmaceutics, 93, 214-223 (2015)

相關內容

Polyethylene glycol (PEG), also sometimes referred to as polyethylene oxide (PEO), is a condensation polymer of ethylene oxide and water that has several chemical properties that make it useful for biological, chemical and pharmaceutical applications.

聚乙二醇 (PEG),有時也稱為聚氧化乙烯 (PEO),是一種環氧乙烷與水的縮合聚合物,具有多種化學特性,使其在生物、化學和醫藥應用方面非常有用。

Questions

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  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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