In physics, usually the density of water at the ice point (0°C), 0.99984 g cm-3; or the maximum density of water (at 4°C), 0.99997 g cm-3. In the U.S. Standard Atmosphere–1976, the density of air at a standard temperature of 15°C and a standard pressure of 1013.25 mb is 1225.00 g cm-3.

How do you find standard density?

The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. For example, the density of water is 1 gram per cubic centimetre, and Earth’s density is 5.51 grams per cubic centimetre.

What is STD density?

Standard air density is density of air calculated at standard temperature and pressure conditions. Standard temperature and pressure (STP) conditions are used as reference points in thermodynamics of gases.

Air having a density of 0.075 lb per cu ft (0.0012 gm per cu cm) which approximates air at 68°F (20.0°C) dry bulb and 50% relative humidity at a barometric pressure of 29.9 in. (76.0 cm) of mercury, or approximating dry air at 70°F (21.1°C) at the same pressure.