3.2. Physiochemical properties
The composition of OLPs determines their boiling point range.
Narrow range of carbon atom numbers of dominant hydrocarbons
causes the flat shape of distillation curve. Approximately 80% of
each product distilled at a boiling point of about 300–310 C (see
Fig. 2), which is the boiling point falling into the diesel fuel distillation
range. Density and kinematic viscosity of OLPs showed also
values acceptable for diesel fuel although the density of OLPs was a
little lower than that of diesel (see Table 2). However, this issue can
be easily solved by blending with a suitable heavier fraction. Typical
composition of hydroprocessed rapeseed oil leads to high calculated
cetane index of all prepared OLPs. It is expected that cetane
number can reach or even exceed the value of 100, as the calculated
cetane index does. Other monitored parameters (sulfur,
water and flash point) also satisfied the demands for diesel fuel