Base Oil

The base oil is a type of oil that is used as a base for lubricants. The main element of lubricants (volume-wise) is base oil and it forms about 95% of the lubricant’s weight. In some lubricants (Compressor and hydraulic oil) 99% of the oil has consisted of base oil and only 1% which is left contains additives. Base oils can be reached from oil-based and non-oil based resources. Most of the base oils used in the world are obtained from crude oil refining. Most of the compounds which form base oils are Paraffinic, Naphthenic and aromatic compounds.

Base oil’s chemical properties and their impact on the usage of final lubricant:

Volatility: reduction of the oil, oil thickening, sediments
Surface Activity: foaming, pressure tolerance, air release, emulsion expansion
Oxidations: sediments, oil thickening, metal oxidation, mud forming
Viscosity: Fluidity in lower degrees, energy waste, abrasion protection, proper cooling
Being soluble: Motor neatness, sealant compatibility, process applications, formulation sustainability

The base oil which is extracted from crude oil is called mineral base oil which is categorized into two types (Paraphinic and Naphtshic).

Paraphinic oils have consisted of normal hydrocarbons and Iso hydrocarbons.
Naphthic oils consist of annular full hydrocarbons.

Paraphinic oils have certain attributes in comparison with naphthic oils such as:

More shedding temperature
Less special weight
More viscosity indicators
Less solubility property
Higher resistance against oxidation
Higher flashpoint

Mainly naphthic oils are needed for less temperature criteria and pour point specially; hydraulic oils, coolers, rubber producing oils, metalworking and cylinders’ lubricants for big motors and greases.

Gemini International co supplies all types of BASE OIL(SN 100-150-300-500-600-700) from great and authentic refineries with best services and facilities.

Base Oil SN 150

Specification Base Oil SN 150

Test items	Test Method	Test Results
Appearance	Visual	Bright & Clear
Color	ASTM D 1500	2.0 – 2.2
Density @ 30 C	ASTM D 1298	0.870
Kinematic Viscosity @ 40 C	ASTM D 445	30.0 – 31.54
Kinematic Viscosity @ 100 C	ASTM D 445	5.0 – 5.5
Viscosity Index	ASTM D 2270	90 – 92
Flash Point, C	ASTM D 92	200 – 210
Pour Point, C	ASTM D 97	-3

Base Oil SN 300

Specification Base Oil SN 300

Test items	Test Method	Test Results
Appearance	Visual	Bright & Clear
Color	ASTM D 1500	2.0 – 2.2
Density @ 30 C	ASTM D 1298	0.870 – 0.880
Kinematic Viscosity @ 40 C	ASTM D 445	45.0 – 65.0
Kinematic Viscosity @ 100 C	ASTM D 445	6.5 – 8.0
Viscosity Index	ASTM D 2270	89 – 92
Flash Point, C	ASTM D 92	210 – 220
Pour Point, C	ASTM D 97	-3

Base Oil SN 500

Specification Base Oil SN 500

Test items	Test Method	Test Results
Appearance	Visual	Bright & Clear
Color	ASTM D 1500	L 2.0 – 2.5
Density @ 30 C	ASTM D 1298	0.885 – 0.890
Kinematic Viscosity @ 40 C	ASTM D 445	97.5 – 102.0
Kinematic Viscosity @ 100 C	ASTM D 445	10.5 – 11.5
Viscosity Index	ASTM D 2270	89.0 – 92.0
Flash Point, C	ASTM D 92	225 – 235
Pour Point, C	ASTM D 97	-3

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Base Oil

The base oil which is extracted from crude oil is called mineral base oil which is categorized into two types (Paraphinic and Naphtshic).

Base Oil SN 150

Base Oil SN 300

Base Oil SN 500

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