Abyssinian oil (crambe seed oil): SAP value and fatty acids
Abyssinian oil (crambe seed oil) has a saponification value of 166.25 mg KOH/g. One gram needs 0.119 g of sodium hydroxide (NaOH) for bar soap or 0.166 g of potassium hydroxide (KOH) for liquid soap to turn fully into soap, before any superfat.
Key numbers
- SAP, NaOH
- 0.118517 g per g oil
- SAP, KOH
- 0.16625 g per g oil
- Saponification value
- 166.25 mg KOH/g
- INCI name
- Crambe Abyssinica Seed Oil
Example: 100 g of Abyssinian oil (crambe seed oil) with no superfat needs 11.9 g of 100% NaOH, or 16.6 g of 100% KOH. A 5% superfat uses 5% less.
In soap
Abyssinian oil (crambe seed oil) is left out of the soap-quality scores in Soap Ledger: it is mostly not ordinary oil (a wax, resin, blend or an oil with unusual fatty acids), so those scores would not describe it. It still counts fully in the lye calculation.
High-erucic oil (long C22 chains), so its SAP is lower than most seed oils. Check your supplier COA.
Sources
SAP value: 166.25 mg KOH/g (Median of sources), from Certificate of Analysis, Abyssinian Oil (representative sample), MakingCosmetics Inc. (supplier COA). Printed value: 155 - 175 mg KOH/g (result 169.96) mg KOH/g.
Published values we checked:
- 155 - 175 mg KOH/g (result 169.96) mg KOH/g — MakingCosmetics Inc. (supplier COA)
- 160 - 175 mg KOH/g — Essential Ingredients Inc. (supplier)
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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