Table 1.
Surfactants mostly used in drug delivery.
| Surfactant | Category | HLB | Groups |
|---|---|---|---|
| Span 85 | Non-ionic | 1.8 | Hydrophobic (oil soluble) |
| Span 65 | Non-ionic | 2 | Hydrophobic (oil soluble) |
| Span 80 | Non-ionic | 4.3 | Hydrophobic (oil soluble) |
| Span 60 | Non-ionic | 4.7 | Hydrophobic (oil soluble) |
| Span 40 | Non-ionic | 6.7 | Hydrophobic (oil soluble) |
| Span 20 | Non-ionic | 8.6 | Water Dispersable |
| Brij 30 | Non-ionic | 9.5 | Water Dispersable |
| Tween 61 | Non-ionic | 9.6 | Water Dispersable |
| Tween 81 | Non-ionic | 10 | Water Dispersable |
| Tween 65 | Non-ionic | 10.5 | Water Dispersable |
| Tween 85 | Non-ionic | 11 | Water Dispersable |
| PEG 400 monooleate | Non-ionic | 11.4 | Water Dispersable |
| PEG 400 monostearate | Non-ionic | 11.6 | Water Dispersable |
| Brij 97 | Non-ionic | 12.5 | Hydrophilic (water soluble) |
| Lipocol C-10 | Non-ionic | 12.9 | Hydrophilic (water soluble) |
| Tween 21 | Non-ionic | 13.3 | Hydrophilic (water soluble) |
| Tween 60 | Non-ionic | 14.9 | Hydrophilic (water soluble) |
| Tween 80 | Non-ionic | 14.9 | Hydrophilic (water soluble) |
| Tween 40 | Non-ionic | 15.6 | Hydrophilic (water soluble) |
| Tween 20 | Non-ionic | 16.7 | Hydrophilic (water soluble) |
| Brij 35 | Non-ionic | 16.9 | Hydrophilic (water soluble) |
| Solutol SH-15 | Non-ionic | 15.2 | Hydrophilic (water soluble) |