..., corn, castor bean, and animal fat based) in a metrological point of view. All the biodiesel types were obtained by a transesterification reaction with methanol in the presence of an alkaline base as a catalyst. The biodiesels had their viscosities measured using capillary viscometers following...

... with methanol in relation to temperature with a metrological point of view. These quantities were measured with a digital density meter, one of the Brazilian density standards, in a temperature range between 15 and 40°C. Measurement uncertainty was calculated. The behavior of density is analyzed considering...