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Polysorbate 20
Key Features and Details
Polysorbate 20
SYNONYMS: Polysorbate 20; Polyoxyethylene (20) Sorbitan Monolaurate; Glycosperse L-20X; Polyethylene glycol sorbitan monolaurate; Polyoxyethylenesorbitan monolaurate; TWEEN® 20; PEG(20)sorbitan monolaurate
CAS: #
9005-64-5
MOLECULAR WEIGHT: 522.676 g/mol
MDL No: MFCD00165986
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PRODUCT DESCRIPTION
Polysorbate 20
Application Notes
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.
Usage Statement
Unless specified otherwise, MP Biomedical's products are for research or further manufacturing use only, not for direct human use. For more information, please contact our customer service department.
Key Applications
Non-ionic detergent | Emulsifying agent | Blocking agent
SPECIFICATIONS
SKU: 02103168-CF
Base Catalog Number: 103168
Alternate Names: Polysorbate 20; Polyoxyethylene (20) Sorbitan Monolaurate; Glycosperse L-20X; Polyethylene glycol sorbitan monolaurate; Polyoxyethylenesorbitan monolaurate; TWEEN® 20; PEG(20)sorbitan monolaurate
CAS
: #
9005-64-5
Critical Micelle Concentration
: 0.06 mM
Format
: Liquid
MDL No
: MFCD00165986
Molecular Weight
: 522.676 g/mol
PPE
: Eyeshields, Gloves
Refractive Index
: n20/D 1.468(Lit.)
RTECS No
: TR7400000
Solubility
: Soluble in water, ethanol, methanol, ethyl acetate and dioxane. Insoluble in mineral oil and petroleum ether
Specific Gravity
: 1.08 - 1.13
Sterilization of Solutions
: 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.
Typical Working Concentration
: SUGGESTED WORKING DILUTIONS 1:50 - 1:200 for Tissue Staining 1:100 - 1:500 for Immunoblotting 1:400 - 1:2,000 for Elisa
