P1754 Sigma-Aldrich


viscous liquid

Synonym: POE (20) sorbitan monooleate, Polyethylene glycol sorbitan monooleate, Polyoxyethylenesorbitan monooleate, Polysorbate 80



Related Categories Biochemicals and Reagents, Cell Biology, Cell Culture, Cell Lysis Reagents, Cell Signaling and Neuroscience,
description   non-ionic
form   viscous liquid
mol wt   micellar avg mol wt 79,000
  average mol wt 1310
composition   Oleic acid, ≥58.0% (balance primarily linoleic, palmitic, and stearic acids)
aggregation number   60
CMC   0.012 mM(20-25°C)
transition temp   cloud point 65 °C
density   1.064 g/cm3
HLB   15


Frequently Asked Questions

Frequently Asked Questions are available for this Product.


Non-ionic detergent used for selective protein extraction and isolation of nuclei from mammalian cell lines.

TWEEN® 80 has been used in drug vehicle solution for specific injections in mice and rats. It has been used for the determination of esterase activity in bacterial cells.


1 L in poly bottle

1 gal in poly bottle

25, 500 mL in poly bottle

Biochem/physiol Actions

TWEEN® 80 is a polysorbate surfactant which helps in stabilizing proteins and in protein membrane studies. It is regularly used for the extraction of membrane proteins and isolation of nuclei from cells.

Legal Information

TWEEN is a registered trademark of Croda International PLC

Price and Availability

All labs need water
Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
>235.4 °F
Flash Point(C) 
>113 °C

Frequently Asked Questions

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. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
How do I get lot-specific information or a Certificate of Analysis?
A Certificate of Analysis is available by lot number and can be obtained through our Advanced Search Option:
What is the Critical Micelle Concentration (CMC) of Product P1754, TWEEN® 80?
The CMC value is 13-15 mg/Liter.  This and other information can be found on the Product Information Sheet, which can be accessed through the following link:
Is Product P1754, TWEEN® 80, sterile?
The product is not sterile. Autoclaving a solution of TWEEN 80 is generally not advised. Sterile filtration is more easily done if the liquid is warmed to about 40°C and alternate portions of hot distilled water and TWEEN 80 are poured through the 0.22 µm filter. The TWEEN 80 will blend and remain in solution.
Is Product P1754, TWEEN® 80, cell culture tested?
No, P1754 is not cell culture tested, but product P4780 is cell culture tested TWEEN 80.  More information can be found on the product detail page for P4780:
Is Product P1754, TWEEN® 80, tested for RNase and DNase activity?
No. Product P1754 is not tested for contaminating RNase and DNase activity.  Product P5188 is a Molecular Biology grade product that has been tested for DNase and RNase.  More information on product P5188 can be found on the product detail page:
Is it normal for the color of Product P1754, TWEEN® 80, to change from lot to lot?
Yes. According to Sigma-Aldrich's specifications, Product No. P1754 can appear bright yellow to yellow with a green cast.  Please see our Specification Sheet for more information:
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. 
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, or search here. 
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
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