acid number

(chemistry) acid value
(engineering) A number derived from a standard test indicating the acid or base composition of lubricating oils; it in no way indicates the corrosive attack of the used oil in service. Also known as corrosion number.

A measure of its rancidity due to hydrolysis, releasing free fatty acids; serves as an index of the efficiency of refining since the fatty acids are removed during refining and increase with deterioration during storage.

biochemistry For measuring the amount of fatty acid in a fat or wax, the number of mg of potassium hydroxide required to neutralize 1 g of substance.

Metric-m.k.s. Pressure in Pa = N·m^-2, speed in m·s^-1, result in N·s·m^-3 = kg·s^-1·m^-2 (m^-2·kg·s^-1).

Metric-c.g.s. Pressure in dyn·cm^-2, speed in cm·s^-1, result in dyn·s·cm^-3 = g·s^-1·cm^-2 (cm^-2·g·s^-1).