Industrial Chemicals
Tween 21
Tween 21 is an ethoxylated sorbitan ester based on a natural fatty acid (lauric acid). This ethoxylate is highly effective at forming oil in water emulsions, particularly when used in combination with its non-ethoxylated precursor, Span 20.
Chemical Description
Ethoxylated sorbitan ester
Functions
- Emulsifier
- Surfactant
- Wetting agent
Applications
- Bitumen & Construction
- Chemicals Manufacture
- Emulsification
- Nonwovens
Regional Availability
- Europe
- Latin America
- N America
Main Specifications
| Property | Units | Value |
|---|---|---|
| Acid value | mgKOH/g | 1.5 |
| Saponification value | mgKOH/g | 107.5 |
| Hydroxyl value | mgKOH/g | 240 |
| Colour | Gardner | 3.5 |
| Form | Oily liquid | |
| HLB value | 13.3 | |
| Water | %m/m | 1.5 |
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