Polysorbate 20, liquid
- Item requires temperature control for storage and delivery with additional fees. It's not eligible for return due to safety and quality concerns. Consider requirements before purchasing.
- Return Policy
Product Details & Documents
Polysorbate 20 is nonionic surfactant derived from sorbitan ester.
- Refractive Index: n20/D 1.468(Lit.)
- Viscosity: 400 cps at 25 °C.(Lit.)
- Critical Micelle Concentration (CMC): 0.06mM
Polysorbate 20 is typically used as an emulsifying agent for the preparation of stable oil-in-water emulsions, particularly in pharmaceutical applications. It has been used in pre-extraction of membranes to remove peripheral proteins. It has been used as a blocking agent on nitrocellulose.
Saponification No: 40-50
Polysorbate 20 is nonionic surfactant derived from sorbitan ester. Autoclaving of solutions is not recommended. Sterile filtering is suggested with a 0.22 micron filter. Tween® may need to be warmed to about 40 °C and alternated with portions of hot distilled water while being poured through the filter. As a blocking agent on nitrocellulose at a typical concentration of 0.05%. Used at concentration of 2% for extraction of membrane-bound proteins.
: Research Use Only (RUO).
- CAS Number:9005-64-5
- Formula:C₅₈H₁₁₄O₂₆
- MDL Number:MFCD00165986
- Boiling Pt:>100 °C (lit.)
- Density:1.095 g/mL (lit.)
- Storage Temperature:Ambient
Documents
Specifications
Specification Test Results
- Identity Test A:Passes
- Identity Test B:Passes
- FTIR:Conforms to Reference
- Solubility (1g/20mL):Clear, Foamy Solution
- Specific Gravity:1.08-1.113
- Water Content:≤3%
- Saponification Number:40-50
Specifications
- Pack type:Glass bottle, amber
- Size:500 ml
Specifications
Some Products May Appear Restricted
To ensure a smooth and speedy checkout, please log in to your account. Some items may show as restricted simply because you're not logged in.
If you do not have an account, you can register using our registration webform (https://www.avantorsciences.com/us/en/login/register)
If you're still seeing restrictions after logging in, certain products—like chemicals or medical devices—require additional account verification steps to be able to place an order. Some items may additionally require a specific license or customer documentation; additional documentation will be requested for these items prior to shipment.
Recommendations will be personalized based on your shopping preferences only if you have given your consent by enabling "Enhance my Shopping Experience" on the "Personal Info page".
Otherwise, you will receive generic recommendations.