Discussion
Match each analytical number with what it measures.
List I
A. Iodine value
B. Saponification value
C. Acid value
D. Peroxide value
List II
1. the free fatty acid content
2. the degree of unsaturation
3. the extent of oxidative rancidity
4. the mean molecular weight of the acids
Answer: B
These four numbers characterise a fat between them and appear on every specification. Each is determined by a titration, and confusing them leads to quite wrong conclusions about a sample. A specification usually quotes all four together.
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