Determination of some physical and chemical properties for different samples of petroleum lubricants

الملخص EN

Some physical and chemical properties for the different samples of lubricants oil for sewing machines, lubricants oil for car’s engine before and after burn process such as, density (d), Specific gravity (Sp.

gr.), standard density (API), dynamic viscosity (η), Kinematics viscosity (ν), Fludity (Φ), Refractive index (R.I ), the percentage of ash (% Ash), acidity and basicity for the different samples of petroleum lubrications were determined.

The heat of combustion (gross calorific value) (Q), heat of Latent (L) and the percentage of hydrogen (% H ) for the same samples were calculated also.