Skip to Content
Merck
CN

63158

Sigma-Aldrich

TWEEN® 20

Synonym(s):

Polyethylene glycol sorbitan monolaurate, Polyoxyethylenesorbitan monolaurate

Sign Into View Organizational & Contract Pricing

Select a Size

About This Item

CAS Number:
9005-64-5
MDL number:
MFCD00165986
UNSPSC Code:
12161900

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

description

non-ionic

mol wt

~1228

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

density

1.095 g/mL at 25 °C (lit.)

SMILES string

CCCCCCCCCCCC(=O)OCCOCC(C1C(C(CO1)OCCO)OCCO)OCCO

InChI

1S/C26H50O10/c1-2-3-4-5-6-7-8-9-10-11-24(30)34-19-18-31-20-22(32-15-12-27)26-25(35-17-14-29)23(21-36-26)33-16-13-28/h22-23,25-29H,2-21H2,1H3

InChI key

HMFKFHLTUCJZJO-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Application

Non-ionic detergent

Legal Information

TWEEN is a registered trademark of Croda International PLC

Regulatory Information

新产品
This item has

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
SZBD0510
21820
81130
50750
71440

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

  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.

Lycias Zembe et al.
PloS one, 6(10), e26096-e26096 (2011-10-25)
The genetic diversity of HIV-1 across the globe is a major challenge for developing an HIV vaccine. To facilitate immunogen design, it is important to characterize clusters of commonly targeted T-cell epitopes across different HIV clades. To address this, we
Lili Lu et al.
Antioxidants & redox signaling, 11(4), 715-724 (2008-10-01)
Oxidative damage contributes to cone cell death in retinitis pigmentosa and death of rods, cones, and retinal pigmented epithelial (RPE) cells in age-related macular degeneration. In this study, we explored the strategy of overexpressing components of the endogenous antioxidant defense
Anna V Miller et al.
Molecular and cellular biology, 28(12), 4142-4151 (2008-04-23)
Transforming growth factor beta (TGFbeta) plays a dual role in oncogenesis, acting as both a tumor suppressor and a tumor promoter. These disparate processes of suppression and promotion are mediated primarily by Smad and non-Smad signaling, respectively. A central issue
Qing-wen Chen et al.
BMC cell biology, 10, 52-52 (2009-07-07)
muscle cells (VSMCs) through activation of endothelin type A (ETA) and type B (ETB) receptors. The extracellular signal-regulated kinase 1 and 2 (ERK1/2) mitogen-activated protein kinases (MAPK) are involved in ET-1-induced VSMC contraction and proliferation. This study was designed to
Louis Hermo et al.
The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society, 56(12), 1121-1135 (2008-09-18)
Water content within the epididymis of the male reproductive system is stringently regulated to promote sperm maturation. Several members of the aquaporin (AQP) family of water channel-forming integral membrane proteins have been identified in epididymal cells, but expression profiling for
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service