Pentaerythritol

Chemical Name: Pentaerythritol

CAS Number: 115-77-5

HS Code: 2905.42.00

Pentaerythritol is a multifunctional polyol with the chemical formula C₅H₁₂O₄. It is typically supplied as a white, odorless crystalline powder or granules and is widely used as a key raw material in resin synthesis, synthetic lubricants and polymer additives. Thanks to its tetra-functional molecular structure, pentaerythritol provides high reactivity and structural stability in a wide range of industrial applications.

In industrial practice, pentaerythritol is commercially available in different purity levels to meet various formulation and performance requirements. The most commonly supplied grades are 95% grade and 98% high-purity grade, which are selected according to downstream application needs.

Key Characteristics

• White crystalline powder or granules

• Four primary hydroxyl groups with high reactivity

• Good thermal and chemical stability

• Suitable for esterification and condensation reactions

• Stable under normal storage and transportation conditions

Available Grades

Pentaerythritol 95% Grade
This grade is widely used in general industrial applications where stable performance and cost efficiency are required. It is commonly applied in alkyd resins, polyester resins, PVC stabilizers and plastic additives, offering reliable processing behavior and consistent quality.

Pentaerythritol 98% High-Purity Grade
The 98% grade features higher mono-pentaerythritol content and lower impurity levels. It is typically selected for applications with stricter quality and appearance requirements, such as high-grade alkyd resins, synthetic lubricant esters and other performance-sensitive formulations.

Typical Applications

Pentaerythritol is widely used across multiple industrial sectors:

Resins and Coatings
Both 95% and 98% grades are suitable for alkyd and polyester resin production. The 98% grade is often preferred for high-performance coatings requiring better color stability and consistency.

Synthetic Lubricants
The 98% high-purity grade is commonly used in the production of polyol ester (POE) synthetic lubricants due to its excellent thermal stability and low volatility.

PVC and Polymer Additives
The 95% grade is frequently used in PVC stabilizer systems and polymer processing, providing good thermal stability and cost-effective performance.

Handling and Storage

Pentaerythritol is not classified as a hazardous material and can be handled using standard industrial practices. It should be stored in a cool, dry and well-ventilated environment, with packaging kept sealed to prevent moisture absorption.