دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the measure of the density or gravity of liquid petroleum products in the United States;derived from relative density in accordance with the following equation: API gravity at 60ﾰF = [141.5 + relative density 60/60ﾰF] -131.5 API gravity is expressed in degrees, 1 D. API being equivalent to 1.0, the specific gravity of water. See gravity.

n: A measure of the density of liquid petroleum products, expressed in degrees. It can be derived from the following equation: API gravity (degree) =141.5/specific gravity-131.5

the relative density of a hydrocarbon based on a scale of degrees API. Density in g/cc = (141 / (131 +API)).