What is relative density?

Definition of relative density - the ratio of the density of a substance to the density of a standard, usually water for a liquid or solid, and air for a gas. read more

Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity usually means relative density with respect to water. The term "relative density" is often preferred in scientific usage. read more

Relative density is the comparison of the density of one material to the density of a particular standard, such as water, at a given temperature or pressure. Relative density is also known as specific gravity. read more

Relative density (RD) is the ratio of the density of a substance to the density of water. It is also known as specific gravity (SG). Because it is a ratio, relative density or specific gravity is a unitless value. If its value is less than 1, then the substance is less dense than water and would float. read more