Jatropha Oil, soapnut seed oil
Saponification values, fatty acid makeup, and what this oil does in a bar of soap.
Saponification values
Grams of lye needed to saponify one gram of jatropha oil, soapnut seed oil. Multiply by your oil weight, then apply your superfat.
- NaOH (bar soap)
- 0.138
- KOH (liquid soap)
- 0.193
- Iodine
- 102
- INS
- 91
Fatty acid profile
These figures account for 94% of jatropha oil, soapnut seed oil. The remainder is made up of fatty acids this model does not track, so treat the derived qualities below as indicative rather than complete.
| Fatty acid | Percentage |
|---|---|
| Oleic | 44% |
| Linoleic | 34% |
| Palmitic | 9% |
| Stearic | 7% |
Soap qualities at 100%
What a bar made entirely of jatropha oil, soapnut seed oil would score. Almost nobody soaps a single oil at 100% — this is here so you can see what the oil contributes to a blend. The shaded band is the range most makers aim for in a finished recipe.
What that means in a recipe
Almost no cleansing contribution (0) against high conditioning (78). Gentle on skin, but a bar built mainly on this will be slow to trace, slow to harden, and low on bubbles without something to balance it.
A high iodine value (102) points the same way: more unsaturated, softer, and quicker to go off than a saturated fat.
Derived from the numbers above rather than written by hand, so it stays in step with the data. Tendencies, not guarantees — your oils, water, and technique all move the result.
Oils that behave similarly
Closest matches by fatty acid makeup — the usual starting point when you have run out of jatropha oil, soapnut seed oil and need a substitute. Check the lye maths again after swapping: SAP values differ even between oils that behave alike.
- Pecan OilSAP 0.135 NaOH
- Cherry Kern2 Oil, p. cerasusSAP 0.137 NaOH
- Brazil Nut OilSAP 0.135 NaOH
- Argan OilSAP 0.136 NaOH
- Sesame OilSAP 0.134 NaOH