Sweet cherry kernel oil (Prunus avium): SAP value and fatty acids
Sweet cherry kernel oil (Prunus avium) has a saponification value of 192.4 mg KOH/g. One gram needs 0.137 g of sodium hydroxide (NaOH) for bar soap or 0.192 g of potassium hydroxide (KOH) for liquid soap to turn fully into soap, before any superfat.
Key numbers
- SAP, NaOH
- 0.137159 g per g oil
- SAP, KOH
- 0.1924 g per g oil
- Saponification value
- 192.4 mg KOH/g
- INCI name
- Prunus Avium Seed Oil
Example: 100 g of Sweet cherry kernel oil (Prunus avium) with no superfat needs 13.7 g of 100% NaOH, or 19.2 g of 100% KOH. A 5% superfat uses 5% less.
In soap
Its main fatty acids in our cited profile are oleic (48.6%) and linoleic (36.1%). The eight fatty acids used in soap-quality scores make up 96.7% of the profile.
On its own it scores 12 for hardness, 0 for cleansing and 85 for conditioning, with a saturated : unsaturated split of 12 : 85.
FNWL's row gives the INCI as Prunus Avium Kernel Oil; CosIng's name is PRUNUS AVIUM SEED OIL.
Fatty-acid profile
| Fatty acid | % of fatty acids | Counts toward |
|---|---|---|
| lauric | 0% | hardness, cleansing, bubbly lather |
| myristic | 0% | hardness, cleansing, bubbly lather |
| palmitic | 8.1% | hardness, creamy lather |
| stearic | 3.8% | hardness, creamy lather |
| ricinoleic | 0% | conditioning, bubbly and creamy lather |
| oleic | 48.6% | conditioning |
| linoleic | 36.1% | conditioning |
| linolenic | 0.1% | conditioning |
Basis: Rodríguez-Blázquez et al. 2023 Table 3, cherry (Prunus avium) kernel oil; lauric/myristic not reported, recorded as 0.
Soap-quality scores (this oil alone)
| Hardness | 12 |
|---|---|
| Cleansing | 0 |
| Conditioning | 85 |
| Bubbly lather | 0 |
| Creamy lather | 12 |
Each score adds up certain fatty acids, the way Soap Ledger scores a whole recipe. They are for comparing recipes; they don't predict how a bar will feel, and they say nothing about safety or skin.
Sources
SAP value: 192.4 mg KOH/g (Median of sources), from Saponification Chart, From Nature With Love (soap/cosmetic supplier). Printed value: 180 - 200 mg KOH/g.
Published values we checked:
- 180 - 200 mg KOH/g — From Nature With Love (soap/cosmetic supplier)
- NaOH 0.1389 / KOH 0.1956 g alkali per g oil — Certified Lye
Fatty acids: Rodríguez-Blázquez S. et al. (2023) Valorization of Prunus Seed Oils: Fatty Acids Composition and Oxidative Stability. Molecules 28:7045. doi:10.3390/molecules28207045, MDPI (open access, peer-reviewed).
NaOH and KOH values are converted from mg KOH/g with the molar masses 39.997 and 56.106 and rounded to 6 decimals, exactly as in the Soap Ledger app. Real oils vary by origin, grade and lot: check your supplier's certificate of analysis. Verify every weight before you make this, and follow lye safety. Not a safety or compliance certification.
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