PENTAERYTHRITOL- ▸ Alkyd resins: Polyol for alkyd resin and varnish manufacture.
- ▸ Rosin/tall-oil esters: Esterification polyol for rosin ester resins.
- ▸ Radiation-cure monomers: Backbone for acrylate monomers (e.g., PETA).
- ▸ Synthetic lubricants: Feedstock for synthetic ester base stocks.
- ▸ Antioxidants: Intermediate for hindered-phenol antioxidants.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
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Pentaerythritol is a high-functionality tetraol — a four-hydroxyl building block for alkyd and ester resins, synthetic lubricants, PVC stabilizers and intumescent flame retardants. Identity: CAS 115-77-5.
What it is
Pentaerythritol (CAS 115-77-5, C5H12O4) is a white crystalline tetrahydric alcohol. Its four primary hydroxyl groups make it a versatile, high-functionality polyol and esterification building block.
Industrial uses
It is used to make alkyd resins for coatings (raising crosslink density and hardness), rosin and fatty-acid esters (tackifiers, gum esters), synthetic ester lubricants (POE), PVC co-stabilizers, and as the carbon/char source in halogen-free intumescent flame-retardant systems. It is also a building block for stabilizers and specialty esters.
It is the carbon source in intumescent systems — see APP and the flame retardants guide.
Forms, grades and handling
Pentaerythritol is supplied as mono- and technical/di-grades (powder/crystalline) in bags and bulk; specify grade. Properties are typical reference values; the Certificate of Analysis (CoA) for the lot you buy governs. Always consult the current Safety Data Sheet (SDS) before handling, and confirm regulatory status and suitability for your application and jurisdiction. Each lot ships with CoA, TDS and SDS.
Bulk supply and RFQ
RawSource sources Pentaerythritol direct from producers in bulk, with CoA, TDS and SDS per lot. Tell us the grade, particle size or specification and quantity you need, and we will quote it. Products are sold for industrial and professional use.
Typical Properties
Typical reference values, not a specification; the Certificate of Analysis (CoA) for the lot governs.
| Property | Typical Value |
|---|---|
| Chemical / class | Polyhydric alcohol (tetraol) |
| CAS Number | 115-77-5 |
| Molecular Formula | C5H12O4 |
| Molecular Weight | 136.15 g/mol |
| Handling | Refer to the current SDS |
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 204-104-9
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Solutions Using This Product
Process-solution guides on this site that specify this chemistry:
- Intumescent & Fireproofing Coating Additives (Coatings & Construction)
Frequently Asked Questions
What is pentaerythritol used for?
Pentaerythritol (CAS 115-77-5) is a tetraol used to make alkyd resins, rosin and fatty-acid esters, synthetic ester lubricants, PVC co-stabilizers, and as the carbon/char source in intumescent flame retardants. RawSource supplies it for industrial use.
What grade of pentaerythritol should I use?
Mono-pentaerythritol (high mono content) is used where high purity/functionality is needed (e.g. POE lubricants, premium alkyds); technical/di-grades suit general resin and ester use. Specify the application and we will quote the grade.
How is bulk pentaerythritol supplied and quoted?
RawSource supplies pentaerythritol in bulk with CoA, TDS and SDS per lot. Pricing is quote-based on grade, particle size/specification and volume; submit an RFQ with your application and quantity.
What is the REACH and TSCA regulatory status of Pentaerythritol?
Pentaerythritol (CAS 115-77-5) is subject to U.S. TSCA Inventory requirements; supplying it into the EU requires valid REACH registration ((EC) No 1907/2006). RawSource cannot verify a third-party supplier's registrations — buyers should require documented TSCA and REACH compliance for their jurisdiction and volume (EC 204-104-9).