Used as a biodegradable slip agent and lubricant in polymer processing, particularly in polyethylene films. Enhances surface smoothness and reduces friction between layers, improving film handling and production efficiency. Also functions as a dispersing aid for pigments and fillers in plastics. Its oleic acid-based structure provides good compatibility with non-polar polymers and contributes to low toxicity and environmental acceptability. Commonly found in packaging materials where low migration and food contact compliance are required.