What Does TAN Stand For?

TAN stands for Total Acid Number

Total Acid Number (TAN) is a measure of the acidity of a substance, typically expressed in milligrams of potassium hydroxide (KOH) per gram of sample. It quantifies the amount of acidic constituents present, which is crucial for assessing the quality and stability of oils, fuels, and lubricants. A higher TAN indicates greater acidity, which may lead to corrosion and degradation of materials over time. TAN testing is essential in various industries, including petroleum, lubricants, and chemical manufacturing, to ensure product performance and longevity.

Added on 14th April 2008 | Last edited on 16th June 2025 | Edit Acronym

Other Meanings for TAN