determine saponifiction value
Calculate Saponification Value
About Saponification Value
The saponification value (SV) is the number of milligrams of potassium hydroxide (KOH) required to saponify 1 gram of fat or oil. It's used to determine the average molecular weight of fats.
From Titration:
SV = (V_blank - V_sample) × N_KOH × 56.1 / Sample Mass
From Molecular Weight:
SV = (Number of Ester Groups × 56.1 × 1000) / MW
Average MW from SV:
MW = (Number of Ester Groups × 56.1 × 1000) / SV
Where:
- SV = Saponification value (mg KOH/g)
- V_blank = Blank titration volume (mL)
- V_sample = Sample titration volume (mL)
- N_KOH = KOH normality
- MW = Molecular weight (g/mol)
Typical Values:
• Coconut oil: 250-260
• Palm oil: 190-210
• Soybean oil: 185-195
• Olive oil: 185-200
Applications:
• Quality control of fats/oils
• Soap manufacturing
• Biodiesel production
• Food industry analysis
Saponification value is crucial in the fats and oils industry for quality control and determining the suitability of oils for specific applications.