05.07.2009

Refers to properties that differ based on the direction that is measured. Contrasts with isotropic

ASTM International is one of the largest voluntary standards development organizations in the world

A measure of how heavy or light a petroleum liquid is compared to water. If its API gravity is greater than 10, it is lighter and floats on water; if less than 10, it is heavier and sinks. API gravity is thus a measure of the relative density of a petroleum liquid and the density of water, but it is used to compare the relative densities of petroleum liquids

To preserve the benzene from oxidization and to improve its storage capacity it is necessary to add anti-oxidants