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
81323
ポリ(エチレングリコール)メチルエーテル
average MN 5,000, methoxy, hydroxyl
別名:
mPEG, ポリエチレングリコールモノメチルエーテル, メトキシポリ(エチレングリコール)
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About This Item
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製品名
ポリ(エチレングリコール)メチルエーテル, average Mn 5,000
蒸気密度
>1 (vs air)
蒸気圧
0.05 mmHg ( 20 °C)
フォーム
flakes
powder or crystals
分子量
average Mn 5,000
mp
60-64 °C
Ω末端
hydroxyl
α末端
methoxy
SMILES記法
O(CCO)C
InChI
1S/C3H8O2/c1-5-3-2-4/h4H,2-3H2,1H3
InChI Key
XNWFRZJHXBZDAG-UHFFFAOYSA-N
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関連製品
保管分類コード
10 - Combustible liquids
WGK
WGK 1
引火点(°F)
359.6 °F - closed cup
引火点(℃)
182 °C - closed cup
個人用保護具 (PPE)
Eyeshields, Gloves
適用法令
試験研究用途を考慮した関連法令を主に挙げております。化学物質以外については、一部の情報のみ提供しています。 製品を安全かつ合法的に使用することは、使用者の義務です。最新情報により修正される場合があります。WEBの反映には時間を要することがあるため、適宜SDSをご参照ください。
Jan Code
81323-6X1KG:
81323-VAR:
81323-BULK:
81323-1KG:
81323-250G:
最新バージョンのいずれかを選択してください：
試験成績書（COA）
資料
装置の性能と安全性に不可欠なバイオファウリングコントロール；生体分子とバイオオーガニズムの蓄積を最小限に抑える。
Biofouling control essential for device performance and safety; minimize accumulation of biomolecules and bioorganisms.
ポリエチレングリコール（PEG）は、生物学的、化学的応用や医薬品開発に有用な化学的性質を有するエチレンオキシドと水との縮合ポリマーです。研究用途にPEGを使用する際に考慮すべき4つのポイントをご紹介します。
Progress in biotechnology fields such as tissue engineering and drug delivery is accompanied by an increasing demand for diverse functional biomaterials. One class of biomaterials that has been the subject of intense research interest is hydrogels, because they closely mimic the natural environment of cells, both chemically and physically and therefore can be used as support to grow cells. This article specifically discusses poly(ethylene glycol) (PEG) hydrogels, which are good for biological applications because they do not generally elicit an immune response. PEGs offer a readily available, easy to modify polymer for widespread use in hydrogel fabrication, including 2D and 3D scaffold for tissue culture. The degradable linkages also enable a variety of applications for release of therapeutic agents.
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How can I determine the shelf life / expiration / retest date of this product?
1 回答-
役に立ちましたか？
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 回答-
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
役に立ちましたか？
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アクティブなフィルタ
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High dispersity!
Googleで翻訳するDispersity is 1.18! Not suitable for my experiment:(
役に立ちましたか？
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We are sorry to hear this polydispersity value is not suitable for your application. Each lot is tested for polydispersity, the value is reported on the COA but we do not provide a specification range. The values from three of our past lots are 1.35, 1.35, and 1.34. You can search for the result of your lot by using the COA search on this page.
If you observed a different polydispersity than what is listed on your lot specific COA, you can contact us for additional technical support. Please visit https://www.sigmaaldrich.com/US/en/support/customer-support to submit a Product Technical Inquiry.
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- 無料で製品を受け取った
Proton NMR spectrum of poly(etylene glycol)methyl ether does not indicate the structure!
Googleで翻訳するDear SA,
Your product MPEG5000 seems to have different structures/contaminants... In the spectra, by comparing -OCH3 end group protons with etylene protons, the degree of polymerisation calculated to be 50,7 instead of 113. Thus Mn is around 2260 g/mol (nor 5000 g/mol). Additionaly, there is an extra peak at 1,8-1,9 ppm is not related with MPEG5000 structure.. Our GPC study also indicates Mn around 2400 (not 5000) which fits well with NMR data... Please, reevaluate the structure of your product by considering our results...役に立ちましたか？
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We would like to investigate this further.
Please visit https://www.sigmaaldrich.com/US/en/support/customer-support to submit a Product Technical Inquiry.
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ライフサイエンス、有機合成、材料科学、クロマトグラフィー、分析など、あらゆる分野の研究に経験のあるメンバーがおります。.
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