Composition and Key Properties

Slack wax is an unrefined or partially refined byproduct obtained during the refining process of lubricating oils. It typically contains a relatively high oil content—ranging from 5% to 30%—which contributes to its softer texture and broader melting range compared to fully refined paraffin wax. Due to the presence of residual impurities and aromatic compounds, slack wax generally exhibits a color that can vary from pale yellow to brown. While its lower refinement level means it may not be directly suitable for highly sensitive applications, it retains enough wax content to be further refined into higher-grade products.

Applications and Benefits

Despite its modest level of refinement, slack wax serves as a versatile feedstock for producing other wax products such as semi-refined and fully refined paraffin wax. Its higher oil content can be advantageous in certain industrial uses, providing additional lubrication or flexibility when blending with other materials. Common applications include its use in the manufacture of polishes, waterproofing agents, and various emulsions where it adds body and improves consistency. This cost-effective nature, combined with the potential for further purification, makes slack wax a valuable resource across multiple sectors.