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Merck
CN

63158

TWEEN ® 20

别名:

聚氧乙烯山梨糖醇酐单月桂酸酯, 聚氧乙烯脱水山梨醇单月桂酸酯

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化学文摘社编号:
9005-64-5
UNSPSC Code:
12161900
MDL number:
MFCD00165986

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description

non-ionic

technique(s)

DNA extraction: suitable, RNA extraction: suitable, cell culture | mammalian: suitable, microbiological culture: suitable, protein purification: suitable

refractive index

n20/D 1.468 (lit.)

hydroxyl value

96‑108

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Application

非离子洗涤剂

Legal Information

TWEEN is a registered trademark of Croda International PLC

法规信息

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历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
SZBD0510
21820
81130
50750
71440

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. What is the purity of Product 63158, TWEEN® 20?

    Tween 20 is Polyoxyethylenesorbitan monolaurate. Product No. 63158 is not assayed for % purity. In our specifications, we have a hydroxyl value of 96-108.

  6. What are the impurities that may be present in Product 63158, TWEEN® 20?

    We do not test for impurities of the Tween 20.

  7. Can solutions of Product 63158, TWEEN® 20, be autoclaved?

    Increased temperatures can lead to autoxidation of Tween 20. Autoclaving is not recommended without testing for changes in the properties. Tween 20 may not be stable to autoclaving, particularly with metal cations in buffer solutions. Autoclaving is done at the customer's discretion.

  8. What is the purity of Product 63158, TWEEN® 20?

    Tween 20 is polyethoxysorbitan laurate. It is not assayed for % purity. In our specifications, we do have a hydroxyl value of 96-108. This means that we analyze the OH groups at the end of the chain. With this result, the amount of polyethoxysorbitan laurate can be calculated.

  9. What are the impurities that may be present in Product 63158, TWEEN® 20?

    We do not test for impurities of the Tween 20. However, the supplier states that there is: <3% water, <10 ppb heavy metals (as lead), and <1ppm arsenic.

  10. What is the percentage of Tween 20 in Product 63158?

    This product is not dissolved in a solvent and therefore can be considered as "100%" Tween 20.

  11. Can solutions of Product 63158, TWEEN® 20, be autoclaved?

    Increased temperatures can lead to autoxidation of Tween 20. Autoclaving is not recommended without testing for changes in the properties. Tween 20 may not be stable to autoclaving, particularly with metal cations in buffer solutions. Autoclaving is done at the customer's discretion.

  12. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

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