Recommended Reference Materials for Realization of Physicochemical Properties

Abstract

Absolute density (Masse volumique) Symbol, p; Unit, kg m-3 • Relative density (Densite relative) Symbol, d, where d is the ratio of the absolute density of a material to the absolute density of a specified reference material.The conditions, pressure, temperature, etc. may be different for the two materials.In the section on water in this report d, refers to the ratio of the absolute density, p" of a given sample of water at a temperature t•c, relative to its maximum value Pmax which is reached at a temperature close to 4•c, the water being free from dissolved gases and under a pressure of 101 325 Pa.Temperatures refer to the International Practical Temperature Scale of 1%8.

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