Chemical Name: Lithium Stearate
Synonyms: Stearic acid lithium salt
CAS No.: 4485-12-5
Molecular Formula: C18H35LiO2
Molecular Weight: 290.41
Appearance: White powder
Lithium stearate, a white crystalline powder with the chemical formula LiO₂C(CH₂)₁₆CH₃, serves as a versatile metal soap widely used in high-temperature lubricants, plastics stabilization, and cosmetics. Its CAS registry number is 4485-12-5.
Parameter | Lithium Stearate | Calcium Stearate | Zinc Stearate |
---|---|---|---|
Melting Point | 220°C | 155°C | 120°C |
Thermal Stability | Excellent (>300°C) | Good (200°C) | Moderate (180°C) |
Solubility in Water | Insoluble | Insoluble | Insoluble |
As a thickener in lithium-based greases, it enhances mechanical stability in automotive and aerospace components under extreme temperatures.
Acts as an acid scavenger in PVC production, preventing degradation during processing at 180-220°C.
Provides texture control in antiperspirants and creams due to its non-toxic, skin-friendly properties.
Challenge: Frequent grease failure in electric vehicle motors at 150°C+ operations.
Solution: 12% lithium stearate-enhanced grease.
Result: 40% longer service life with stable viscosity at 200°C.
Challenge: HCl release during recycled PVC extrusion.
Solution: 0.8% lithium stearate additive.
Result: 90% reduction in equipment corrosion, 15% faster production rates.
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