Petroleum jelly
Melt. Point 49-51 c
Uv abs. (290 nm.) 0.257
Penetr. 170-210
Color (lovibond) max 2 yellow
Viscosity (210 f ) 40-47 sus
Odor and taste suitable
Ash max 0.05 %
Acidity notr
Reduced subs. None
Packing 170 kg net in new iron drums (one container takes 77 drums)
Specific gravity at 15.6 deg.C 0.9419max
Viscosity at 50 deg. C 178max
Flash point (p.M.) deg. C 55-65min.
Pour point deg. C 21max.
Sediment and water content vol% 0.8-1.0 max
Caloric value kcal/kg 10200
Ah content wt% 0.08max
Carbon residue (rams) wt% 8.5max
Sulfur content wt% 3.5-4max
REBCO (Russian Export Blend Crude Oil) is a sort of Russian Export Crude Oil with a mixture formed in the system of pipeline Transneft by mixing heavy sour crude Ural from the Volga region and low-sulfur oil in Western Siberia, the relevant characteristics to the brand Urals.
Urals brand oil is supplied through the Baku-Novorossiysk pipeline system and the Druzhba pipeline.
Components of petroleum are separated using a technique called fractional distillation, i.e. separation of a liquid mixture into fractions differing in boiling point by means of distillation, typically using a fractionating column.
Petroleum includes not only crude oil, but all liquid, gaseous and solid hydrocarbons.
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Modern mineral base oils are the result of a long and complex distillation and refining processes. The feedstock used is crude oil. This substance is not of uniform quality but consists of several thousands of hydrocarbon compounds in which the elements carbon and hydrogen are present in all molecules and, in part, are bound to other elements.
The hydrocarbons can be divided into three main groups: paraffinic, naphthenic and aromatic. Paraffinic hydrocarbons can be further divided into two subgroups: normal paraffinic and iso- paraffinic.
Paraffinic hydrocarbons are the best lubricants. The distillation process in the refinery separates the hydrocarbons contained in the crude into cuts based on the molecule size.
Furthermore, as many unwanted substances as possible are removed in the process, such as sulphur, aromatic hydrocarbons, paraffin wax, etc. In other words the mineral oil production process is physical cleaning and the end product is so-called paraffinic base oil.
Most of the hydrocarbons in the base oil are paraffinic, but it also contains naphthenic and aromatic molecules. When the finished lubricant, such as motor oil, is made of these, several additive compounds are used to improve the base oil properties.
The final outcome can also be so-called naphthenic base oil, where most of the hydrocarbons are naphthenic. Their cold properties are excellent.
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