Enter your Calculation Method along with values like Mass of Iodine Absorbed, Sample Mass, or titration inputs (Blank Volume, Sample Volume, Thiosulfate Normality) to calculate your Iodine Value — plus get your oil's Classification and Degree of Unsaturation based on how much iodine your fat or oil can absorb.
Iodine Value
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Oil Classification
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Degree of Unsaturation
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Iodine value is a measure of the degree of unsaturation in fats and oils, expressed as grams of iodine absorbed by 100 grams of fat. Higher values indicate more unsaturated fatty acids.
The basic formula is IV = (Mass of Iodine Absorbed / Sample Mass) × 100. For titration method, use IV = [(B-S) × N × 126.9] / Sample Mass, where B is blank volume, S is sample volume, and N is normality.
Coconut oil: 8-10, Palm oil: 50-55, Olive oil: 80-88, Sunflower oil: 125-140, Linseed oil: 170-204. Higher values indicate more unsaturated oils.
Iodine value helps determine oil hardness and soap bar quality. Lower iodine values produce harder soaps, while higher values create softer, more conditioning soaps.
A high iodine value indicates high unsaturation, meaning the oil contains many double bonds. Such oils are more prone to rancidity but provide better conditioning properties in cosmetics.
The fatty acid composition method is highly accurate when precise fatty acid percentages are known. It's commonly used in industrial applications for quality control.
Iodine value measures unsaturation (double bonds), while saponification value measures the amount of alkali needed to saponify the fat. Both are important for oil characterization.