Pentaerythrityl stearate

Pentaerythrityl stearate (CAS 8045-34-9) is a pentaerythritol-based ester of stearic acid used as a lubricant and plasticizer across industrial manufacturing. It provides controlled slip, release, and softening effects in polymer processing and surface coating applications.

In plastics compounding, it functions as an internal and external lubricant, reducing melt viscosity and preventing adhesion to processing equipment during extrusion and injection molding. This ensures efficient production cycles and high-quality finishes.

Coatings and sealant formulators incorporate it to improve surface slip and substrate release without compromising film integrity. In metalworking lubricant formulations, it contributes to boundary lubrication performance under moderate load conditions.

Adhesive and elastomer producers use it as a softening agent to adjust flexibility and processing behavior in finished compounds. This versatility makes it a staple additive in various chemical manufacturing sectors globally.

Pentaerythrityl stearate is typically supplied as a white to off-white waxy solid, available in flake or powder form. Technical grade is the standard commercial offering for industrial lubricant and polymer applications.

Purity specifications and ester composition profiles vary by supplier, so buyers should confirm hydroxyl value and acid value against application requirements. Proper storage in cool, dry conditions is recommended to maintain product stability.