Base Oil SN 500 is a Group I mineral oil, widely used as a base stock in the formulation of lubricants across various industries. It is derived from crude oil through solvent refining and dewaxing processes, providing it with a balance of performance, stability, and cost-effectiveness. SN 500 is heavier and more viscous than lighter base oils like SN 150, making it ideal for applications that require thicker lubrication.

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Chemical and Physical Properties:

• Viscosity at 40°C: 90–100 cSt

• Viscosity Index (VI): 95

• Density at 15°C: ~0.890–0.900 g/cm³

• Flash Point: >220°C

• Pour Point: -6°C to -9°C

• Appearance: Clear, bright, and colorless liquid

• Odor: Mild petroleum odor

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Key Characteristics:

• High Viscosity: SN 500’s higher viscosity makes it suitable for applications that require thicker, more durable lubrication films.

• Good Oxidation Stability: SN 500 offers good resistance to oxidation, minimizing the formation of sludge and varnish over time, especially under high temperatures.

• Thermal Stability: Its high flash point and low volatility make SN 500 stable under thermal stress, reducing evaporation and degradation at high temperatures.

• Low Pour Point: SN 500 maintains fluidity at moderately low temperatures, ensuring good performance in diverse climate conditions.

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Applications of Base Oil SN 500

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1. In the Automotive Industry:

   • Engine Oils: SN 500 is commonly used as a primary base oil in the formulation of multi-grade engine oils, providing effective lubrication for internal combustion engines in cars, trucks, and other vehicles.

   • Transmission Fluids: It is used in manual transmission fluids and gear oils, offering the necessary viscosity and wear protection for heavy-duty applications.

2. In Industrial Lubricants:

   • Hydraulic Oils: SN 500 is used in hydraulic oils for high-pressure systems, ensuring efficient power transmission, wear protection, and system longevity.

   • Gear Oils: With its thicker viscosity, SN 500 is ideal for formulating gear oils that operate in high-load conditions, reducing wear and friction in industrial gearboxes and machinery.

3. In Marine and Heavy-Duty Lubricants:

   • Marine Engine Oils: SN 500 is commonly used in marine lubricants for large engines operating under extreme conditions, providing high-temperature stability and long-lasting lubrication.

   • Heavy-Duty Engine Oils: In trucks, buses, and other heavy-duty vehicles, SN 500 helps ensure optimal performance under high loads and temperatures, extending engine life.

4. In Grease Manufacturing:

   • Thickener in Grease: SN 500 serves as an essential component in the production of greases used in bearings, joints, and other mechanical parts that require long-lasting, high-viscosity lubrication.

5. In Metalworking Fluids:

   • Cutting and Machining Oils: SN 500 is utilized in metalworking fluids, providing a high-viscosity base that helps with tool lubrication and cooling during machining operations.

6. In Rubber and Tire Manufacturing:

   • Processing Oils: It is used in the rubber industry as a processing oil, improving flexibility and durability during the production of rubber and tire compounds.

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Safety and Handling:

Base Oil SN 500 is generally considered safe for industrial applications but should be handled with care. It is important to follow safety guidelines for storage and handling to prevent environmental contamination. The oil should be stored in a cool, dry place, away from direct sunlight and open flames. Protective equipment such as gloves and goggles should be used when handling it to prevent skin and eye contact.

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Comparison to Other Base Oils:

• Base Oil SN 150: Compared to SN 150, SN 500 is thicker and provides better protection in heavy-duty applications that require higher viscosity. However, SN 150 is more suited to lighter applications such as in smaller engines or low-load systems.

• Base Oil SN 600: SN 600 has a slightly higher viscosity than SN 500 and is often used in more extreme industrial environments where additional thickness is required for lubrication.

• Synthetic Base Oils: While SN 500 is cost-effective and performs well in many general-purpose applications, synthetic base oils offer superior performance in extreme temperature conditions and longer service life, though at a higher cost.

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If you require more information on the specifications or applications of Base Oil SN 500 in your industry, feel free to ask!