Abstract

The physical properties of algal hydrotreated renewal diesel (algal HRD) and several binary mixtures of n-hexadecane and 2,2,4,4,6,8,8-heptamethylnonane were measured in this work. The density and viscosity were measured at temperatures ranging from (293.15 to 393.15) K and the pure components values fell within the range of previously reported values. Speed of sound data were measured at temperatures ranging from (293.15 to 323.15) K and ranged from (1170 to 1360) m·s–1. The bulk modulus was calculated from the density and speed of sound data, and its values ranged from (1050 to 1425) MPa. For the pure n-hexadecane and 2,2,4,4,6,8,8-heptamethylnonane and their mixtures, the flash point values ranged from (367 to 408) K and the surface tension values ranged from (24.1 to 27.3) mN·m–1. The values of viscosity and flash point (360 K) for the algal HRD did not fall within the range of values for the mixtures of n-hexadecane and 2,2,4,4,6,8,8-heptamethylnonane, but the values of density, speed of sound, bulk ...

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