API gravity: Difference between revisions

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Conversely, the specific gravity of petroleum liquids can be derived from their API gravity value as
 
:<math>\text{SG at}~60^\circ\text{F} = \frac{141.5}{\text{API gravity} + 131.5}</math>
 
Thus, a heavy oil with a specific gravity of 1.0 (i.e., with the same density as pure water at 60&nbsp;°F) has an API gravity of: