Product Details
CasNo： 9005-64-5
Appearance： liquid
Delivery Time： 15 days
Packing： 200kg/drum
Purity： 99%
Basic Information
- English Name: Tween - 20, Polyoxyethylene(20)Sorbaitan Monolaurate, Polysorbate 20
- CAS No.: 9005 - 64 - 5
- Source and Preparation Method: It is prepared by the reaction of sorbitan monolaurate with ethylene oxide. Specifically, Tween 20 is obtained by the condensation of about 20 moles of ethylene oxide with each mole of sorbitol and its dehydration compounds under alkaline conditions. The lauric acid used in the esterification may contain other fatty acids.
Technical Indicators
- Appearance: Amber - colored viscous liquid.
- Saponification Value: 45 - 55mgKOH/g.
- Hydroxyl Value: 90 - 110mgKOH/g.
- Acid Value: ≤2mgKOH/g.
- Water Content: ≤3%.
- HLB Value: 16.7.
Physical and Chemical Properties
- Relative Density: 1.01.
- Boiling Point: >100°C.
- Flash Point: 321°C.
- Refractive Index: 1.472.
- Viscosity (25°C): 0.25 - 0.40Pa·s.
- Solubility: Miscible with water, ethanol, methanol, and ethyl acetate. Insoluble in liquid paraffin, non - volatile oils, and light petroleum. The pH of a 5% aqueous solution is 5 - 7.
Performance Characteristics
Tween 20 is an oil - in - water (O/W) type emulsifier with good solubilization, dispersion, stability, antistatic, and lubricating properties.
Main Uses
- Industrial Field: It can be used as a mineral oil emulsifier, a dye solubilizer, a foam plastic stabilizer, and a photographic emulsion auxiliary.
- Cosmetics Field: As an emulsifier in cosmetics, such as a viscosity regulator in shampoo.
- Pharmaceutical Field: As a pharmaceutical emulsifier, it can also be used as a solubilizer for drug carriers.
- Biological Science Field: It can be used as an emulsifier to prepare stable oil - in - water emulsions. It can also be used to remove peripheral proteins in membrane protein extraction and as a blocking agent in immunodetection.
