Open Access
Table 4
HLB contribution by the oil phase of different formulations (F1-F5) to determine the rHLB of the emulsifier.
| Oil phase | Formulations | |||||
|---|---|---|---|---|---|---|
| F1 | F2 | F3 | F4 | F5 | ||
| White beeswax (HLB = 12) | %w/w | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
| HLB contribution | 0.53 | 0.56 | 0.6 | 0.64 | 0.49 | |
| Isopropyl myristate (HLB = 11.5) | %w/w | 7.5 | 7.5 | 7.5 | 7.5 | 10 |
| HLB contribution | 2.54 | 2.70 | 2.88 | 3.08 | 3.11 | |
| glyceryl monostearate (HLB = 3.8) | %w/w | 7.5 | 7.5 | 7.5 | 7.5 | 10.0 |
| HLB contribution | 0.84 | 0.89 | 0.95 | 1.02 | 1.03 | |
| Stearic acid (HLB = 15) | %w/w | 12.5 | 10.5 | 8.5 | 6.5 | 10.5 |
| HLB contribution | 5.51 | 4.92 | 4.25 | 3.48 | 4.26 | |
| Amesiodendron chinense (Merr.) Hu oil (HLB = 6.2) | %w/w | 5 | 5 | 5 | 5 | 5 |
| HLB contribution | 0.91 | 0.97 | 1.03 | 1.11 | 0.84 | |
| Total oil phase | 34 | 32 | 30 | 28 | 37 | |
| rHLB value of formulation | 10.33 | 10.04 | 9.71 | 9.33 | 9.72 |
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