Tween® 20pure, Ph. Eur., USP

(Polysorbate 20, Polyoxyethylene sorbitan monolaureate)
Mr ca. 1200CAS [9005-64-5]

n ca. 20, CMC (25 °C) 0.059 mM, HLB 16.7
Non-ionic surfactant that effectively suppresses unspecific reactions between antibodies, antigens and other molecules (1, 2). Also used as a solubilizer in membrane chemistry (3) and for density centrifugation of viruses (4).

Free dioxane
Free ethylene oxide
Heavy metals
Non animal origin
max. 1 ppm
max. 1 ppm
max. 10 ppm
Tween 20 = registered trademark of ICI, Ltd.

  1. Thean, E.T. & Toh, B.H. (1989) Anal. Biochem. 177, 256-8
  2. Tovey, E.R. et al. (1989) Electrophoresis 10, 243-9
  3. Lund, S. et al. (1989) J. Biol. Chem. 264, 4907-15
  4. Boeye, A. & DeRees, A. (1989) Arch. Virol. 107, 77-84

EINECS: 500-018-3WGK: 1LHS: 34021300
Storage Temperature: +15 °C to +30 °C

500 g
Please Login to order.
5 kg
*Please use the inquiry form in the right column.

Additional Information

You may find this also interesting:

Product Inquiry
*Please add your address and phone number to the field "Message". Samples according to availability. Equipment demonstration on request in Germany and other countries by appointment.
Your data will be processed electronically to answer your inquiry. By sending your request to you agree with the Privacy Policy.


SERVA Market Square: October-December 2020

Product of the Month December

Close window
SERVA Market Square: October-December 2020

• Vertical Protein Electrophoresis
• Horizontal Protöein Electrophoresis
• Westeern Blotting
• Fluorescent Dyes
• DNA/RNA Electrophoresis
• Fluorescent Labelling
• Cell-Based Assays
• Enzymes
• Detergents
• Protease and Phosphatase Inhibitors

  → This way to the Special Offer

Close window
Product of the Month December

Highly Effective Decontamination Solution

→ This way to the Special Offer

SERVA InfoMail - Get the latest information

Close window

When subscribing to »SERVA InfoMail« you will receive information about the latest product release, special promotions, new jobs at SERVA and more. This service is, of course, free of charge.
You may remove your name any time from the list of recipients.

Quick Order

Close window

Using the Quick Order field, you can add a product to your shopping cart with just one click. All you have to do: enter the Cat.No. as shown in our catalog in the format xxxxx.yy and click the Go!-Button.