Stearic Acid has a saponification (SAP) value of 0.1412 for NaOH (bar soap) and 0.198 for KOH (liquid soap). It's typically used at 20-60% of the oils.
How much lye for Stearic Acid?
Lye at 0% superfat = oil weight × SAP. Apply your superfat to reduce it (e.g. ×0.95 for 5%).
| Stearic Acid | NaOH (0% SF) | NaOH (5% SF) | KOH (0% SF) |
|---|---|---|---|
| 100 g | 14.1 g | 13.4 g | 19.8 g |
| 250 g | 35.3 g | 33.5 g | 49.5 g |
| 500 g | 70.6 g | 67.1 g | 99 g |
What Stearic Acid does in soap
| Property | Value |
|---|---|
| Hardness | 94 |
| Cleansing | 0 |
| Conditioning | 2 |
| Bubbly lather | 0 |
| Creamy lather | 94 |
| Longevity | 94 |
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 | % |
|---|---|
| stearic | 94% |
| oleic | 2% |
Usage notes
Shaving soap formullerinde yogunluk ve stable kopuk icin kullanilir.
Build a recipe with Stearic Acid 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.