|Definition|| : ||Total Acid Number
|Category|| : ||Academic & Science Chemistry
|Country/Region|| : ||Worldwide
|Popularity|| : ||
What does TAN mean?
The Total Acid Number (TAN) is the amount of potassium hydroxide in milligrams that is needed to neutralize the acids in one gram of oil. It is an important quality measurement of crude oil. The TAN value indicates to the crude oil refinery the potential of corrosion problems. It is usually the naphthenic acids in the crude oil that causes corrosion problems. This type of corrosion is referred to as naphthenic acid corrosion or NAC.