Sal Butter has a saponification (SAP) value of 0.132 for NaOH (bar soap) and 0.185 for KOH (liquid soap). It's typically used at 2-12% of the oils.
How much lye for Sal Butter?
Lye at 0% superfat = oil weight × SAP. Apply your superfat to reduce it (e.g. ×0.95 for 5%).
| Sal Butter | NaOH (0% SF) | NaOH (5% SF) | KOH (0% SF) |
|---|---|---|---|
| 100 g | 13.2 g | 12.5 g | 18.5 g |
| 250 g | 33 g | 31.4 g | 46.3 g |
| 500 g | 66 g | 62.7 g | 92.5 g |
What Sal Butter does in soap
| Property | Value |
|---|---|
| Hardness | 49 |
| Cleansing | 0 |
| Conditioning | 42 |
| Bubbly lather | 0 |
| Creamy lather | 49 |
| Longevity | 49 |
Values are the oil's solo contribution (SoapCalc-style property model). Real bars blend several oils — build the full recipe to see the combined profile.
Fatty-acid profile
| Fatty acid | % |
|---|---|
| palmitic | 5% |
| stearic | 44% |
| oleic | 42% |
Build a recipe with Sal Butter in SoapCalc — it computes the exact lye for your oils at any superfat and saves the recipe. See all soap-making oils or the SAP value chart.