Polysorbate 20, liquid
About this item
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
3 Options Available Below
- 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
Specifications for Product Family
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
Product Family Options
Product Information
- Pack typeSizeAvailabilityPrice
- Supplier Number: 0210316880Item 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.
- Supplier Number: 0210316890Item 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.
- Supplier Number: 0210316891Item 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.
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