Polysorbate 20

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 Number: 9005-64-5 Molecular Weight: 522.676 g/mol

MDL Number: MFCD00165986

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SKU 02194841-CF
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Description

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 (used at 2% for extraction of membrane-bound proteins). It has been used as a blocking agent on nitrocellulose at a typical concentration of 0.05%.

Usage Statement

Research Use Only (RUO). Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Key Applications

Non-ionic detergent||Emulsifying agent||Blocking agent

Specifications
SKU 02194841-CF
Alternate Names Polysorbate 20; Polyoxyethylene (20) Sorbitan Monolaurate; Glycosperse L-20X; Polyethylene glycol sorbitan monolaurate; Polyoxyethylenesorbitan monolaurate; TWEEN® 20; PEG(20)sorbitan monolaurate
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 (used at 2% for extraction of membrane-bound proteins). It has been used as a blocking agent on nitrocellulose at a typical concentration of 0.05%.
Critical Micelle Concentration 0.06 mM
Format liquid
Grade Molecular biology reagent
Applications Non-ionic detergent||Emulsifying agent||Blocking agent
MDL # MFCD00165986
Molecular Weight 522.676 g/mol
Personal Protective Equipment Eyeshields, Gloves
Physical Appearance Liquid
Product Families Description Polysorbate 20
Product Overview Polysorbate 20
Refractive Index n20/D 1.468(Lit.)
RTECS Number TR7400000
Solubility Soluble in <a class="pubchem-internal-link CID-962" href="https://pubchem.ncbi.nlm.nih.gov/compound/water">water</a>, <a class="pubchem-internal-link CID-702" href="https://pubchem.ncbi.nlm.nih.gov/compound/ethanol">ethanol</a>, <a class="pubchem-internal-link CID-887" href="https://pubchem.ncbi.nlm.nih.gov/compound/methanol">methanol</a>, <a class="pubchem-internal-link CID-8857" href="https://pubchem.ncbi.nlm.nih.gov/compound/ethyl%20acetate">ethyl acetate</a> and <a class="pubchem-internal-link CID-31275" href="https://pubchem.ncbi.nlm.nih.gov/compound/dioxane">dioxane</a>. 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.
Storage and Handling Store at Room Temperature(15-30 °C.)
Typical Working Concentration As a blocking agent on nitrocellulose at a typical concentration of 0.05%. Used at concentration of 2% for extraction of membrane-bound proteins.
Usage Statement Research Use Only (RUO). Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.