Lithium Stearate

Lithium Octadecanoate, Stearic Acid Lithium Salt.

CAS
4485-12-5
EC
224-772-5
Sectors
Lubricants & Metalworking, Plastics & Polymers

Lithium Stearate (CAS 4485-12-5) is a metallic soap supplied as a white powder, a lithium salt of stearic acid that is used as the primary thickening agent for multi-purpose automotive and industrial greases and as an internal lubricant and heat stabilizer for nylon and other engineering plastics. Our High-Purity Grade is specifically designed for the manufacture of high-performance lubricating greases.

Unlike other metallic soaps, it maintains its structural integrity at high operating temperatures, preventing the breakdown of lubricants in heavy-duty machinery. It features a fine particle size, allowing for easy dispersion in both mineral and synthetic base oils.

In the polymer industry, it serves as a highly effective internal lubricant and heat stabilizer for specialized plastics. Its unique chemical properties provide a low coefficient of friction, making it indispensable for high-precision manufacturing and automotive components.

Typical Properties

Molecular formulaC18H36O2.Li
Molecular weight290.41 g/mol
Appearancewhite powder
FormPowder
ColorWhite
Melting point216-217 °C
Density1.025
Water solubilityInsoluble in water.
HS code29157090
Grades availableTechnical Grade

Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.

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Lithium Stearate

Applications
  • Lithium Greases: The primary thickening agent for multi-purpose automotive and industrial greases, offering high-temperature durability.
  • Plastic Processing: Acts as a lubricant and stabilizer for nylon and other engineering plastics during high-temperature extrusion.
  • Powder Metallurgy: Used as a lubricant in the pressing of metal powders to ensure uniform density and easy part release.
Safety & Risks

Classified as a non-hazardous solid; however, dust may cause mechanical irritation. Always use safety glasses, protective gloves, and avoid dust accumulation to minimize inhalation risks.

Packaging

20 kg or 25 kg Multi-layer Paper Bags.