Google Scholar. Lewkowitseh, J. Goldschmidt, F. Monick, J. Wright, C. Download references. You can also search for this author in PubMed Google Scholar. Blank, E. Errors in the acid and saponification values of fatty acids.
J Am Oil Chem Soc 39, — Download citation. Received : 14 September Issue Date : February Anyone you share the following link with will be able to read this content:. Sorry, a shareable link is not currently available for this article. Provided by the Springer Nature SharedIt content-sharing initiative. Skip to main content. The key difference between acid value and saponification value is that acid value gives the mass of potassium hydroxide that is required to neutralize one gram of a chemical substance whereas saponification value gives the mass of potassium hydroxide required to saponify one gram of fat.
Although acid value and saponification value are different from each other, both these values are given as a mass of potassium hydroxide. Moreover, these terms give the value in the unit milligrams.
Overview and Key Difference 2. What is Acid Value 3. What is Saponification Value 4. Acid value is the mass in milligrams of potassium hydroxide that is required to neutralize one gram of a chemical substance. In other words, this value determines the amount of acid in the substance. Generally, this value is used as a measure of the amount of carboxylic acid groups in a chemical compound — E.
The determination of acid value includes dissolving a known amount of a sample in an organic solvent usually we use isopropanol as the solvent followed by titration with a solution of potassium hydroxide. Here, the potassium hydroxide solution should have a known concentration, and the indicator for this titration is phenolphthalein. The color change is colorless to pink. The acid number can be used to quantify the acidity of a substance such as biodiesel.
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