2. Determining physical characteristics

2.1 Density – Density

Density is determined using a pycnometer according to the standardized method NF EN ISO 6883 (Fats of animal and vegetable origin – Determination of conventional density (weight per liter in air). Absolute density can be expressed (in a vacuum), but as this determination is generally used to transform a mass of oil into a volume, we prefer to use the weight per liter of oil in air. The methods refer to the density of water, which differs according to the ISO or IUPAC method (table