Description

Pentaerythritol is a symmetrical, tetrafunctional polyol with exceptional thermal stability and low volatility. Its unique molecular architecture enables high crosslink density in resins and coatings, delivering superior hardness, chemical resistance, and weatherability. It is essential for manufacturers of alkyd and polyester resins, powder coatings, synthetic lubricants, and plasticizers serving the automotive, aerospace, construction, and electronics industries. Pentaerythritol CAS NO 115-77-5 is widely specified for performance-critical industrial formulations requiring consistent reactivity and purity.

Application

• Primary raw material for high-performance alkyd and polyester resins used in automotive refinish and industrial maintenance coatings
• Key monomer in thermosetting powder coatings for metal furniture, appliances, and architectural cladding
• Building block for neopentyl glycol (NPG) and pentaerythritol tetranitrate (PETN) synthesis
• Base for synthetic lubricants and hydraulic fluids due to excellent oxidative stability and high flash point
• Plasticizer and stabilizer in PVC and other thermoplastics for enhanced heat and UV resistance
• Crosslinking agent in amino-formaldehyde resins for wood adhesives and laminates
• Intermediate in the production of flame-retardant additives and specialty esters
• Component in high-solids and low-VOC coating systems compliant with global environmental regulations

Basic Information

Product Name	Pentaerythritol
CAS No.	115-77-5
Molecular Formula	C5H12O4
Molecular Weight	136.15 g/mol
Synonyms	Pentaerythritol; 2,2-Bis(hydroxymethyl)-1,3-propanediol; Tetramethylolmethane; Pentaerythritol tetranitrate precursor; PER; PE; TMP analog; 1,1,1-Tris(hydroxymethyl)ethane alternative; C5 polyol; Tetrol
EINECS	204-104-9

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) are available upon request. All batches conform to ASTM D4292 and meet specifications for ACS Reagent Grade where applicable. We maintain ISO 9001-certified manufacturing processes and support regulatory compliance for REACH, FDA 21 CFR, and EU food-contact applications (subject to grade selection). Traceability and batch-specific documentation are standard for all shipments.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15–25°C). Due to its hygroscopic nature, minimize exposure to ambient humidity and avoid repeated opening of containers. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Assay (by titration)	≥ 99.0%
Moisture (Karl Fischer)	≤ 0.5%
Ash content	≤ 0.05%
Acidity (as acetic acid)	≤ 0.1%
Melting point	260–265°C
Identification (IR)	Conforms to reference spectrum
Solubility	Soluble in hot water, ethanol, acetone; slightly soluble in cold water

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.