About
Soybean Oil is rich in linoleic acid (50%). Very rich in polyunsaturated fatty acids, it makes a gentle but soft soap that is more prone to rancidity (orange spots), so it is best kept to a small share of the recipe.
Values
Saponification value (KOH)
191
mg KOH / g of oil
Saponification value (NaOH)
0.136
g NaOH / g of oil
INS
61
Iodine value
131
How much lye for 1 kg?
For 1,000 g of Soybean Oil with 5% superfat:
Sodium hydroxide (NaOH)
129.6 g
Potassium hydroxide (pure KOH)
181.5 g
i.e. 201.6 g of 90% pure KOH
These amounts apply to a soap made with this oil only. For a blend of oils, use the calculator.
Fatty acid profile
Soap qualities (oil used alone)
Values for a soap made with 100% of this oil, compared with the recommended range for a complete recipe.
Oils with a similar profile
Fats whose fatty acid composition is closest to this one: useful to find a substitute.