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This study investigates the tribochemical properties of glycerol and its aqueous solutions under confinement between ferrous surfaces using reactive non-equilibrium molecular dynamics (NEMD) simulations. The results demonstrate that glycerol significantly reduces friction, with the friction coefficient showing a slight dependence on water concentration. While viscosity decreases with higher water content, pure glycerol achieves lower friction but exhibits pronounced wall slip effects near the surfaces. Analysis of the velocity profile reveals deviations from the linear shape close to the interface, particularly for pure glycerol, where surface interactions restrict molecular flow. The dissociation of glycerol molecules under shear stress and elevated pressures leads to the formation of water and transitive by-products, with dissociation rates increasing at higher pressures and decreasing as water concentration rises. A numerical method based on normalized atomic density profiles reveals atomic-scale surface wear, with iron atom dissociation increasing under high normal stresses. These findings provide a detailed understanding of the interplay between friction reduction, viscosity, and tribochemical reactivity in glycerol aqueous solutions, offering insights into their performance as environmentally sustainable lubricants under extreme operating conditions.