2,5-Furandicarboxylic acid
2,5-Furandicarboxylic acid (CAS: 3238-40-2), also known as C6H4O5, is a rigid aromatic dicarboxylic acid. It is a valuable furan derivative and a versatile building block in chemical synthesis. Its structure lends itself to the development of novel polymers and materials, serving as a key intermediate in the production of bio-based plastics and resins.
- Synonyms
- C6H4O52,5-Dicarboxyfuran

Polymer Synthesis
Used as a monomer in the synthesis of polyesters and polyamides, contributing to the development of bio-based and high-performance polymers. It can serve as a furanic alternative to terephthalic acid in polymer backbones.
Organic Synthesis Intermediate
Serves as a crucial building block for the synthesis of complex organic molecules, heterocyclic compounds, and specialty chemicals. Its reactive carboxylic acid groups allow for diverse chemical transformations.
Material Science
Investigated for its role in creating advanced materials with tailored properties, including improved thermal stability and barrier characteristics in packaging applications.
| Molecular weight | 156.09 |
|---|---|
| Empirical formula | C6H4O5 |
| Assay | 97% |
| Melting point | >300 °C |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36/37 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 2,5-Furandicarboxylic acid used for?
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2,5-Furandicarboxylic acid is primarily used as a building block in organic synthesis and for the development of novel polymers, such as polyesters and polyamides, contributing to bio-based materials and advanced plastics.
What is the CAS number and molecular formula for 2,5-Furandicarboxylic acid?
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The CAS number for 2,5-Furandicarboxylic acid is 3238-40-2, and its molecular formula is C6H4O5 (empirical formula in Hill notation).
What grade and purity does Tech Serve Solutions supply for 2,5-Furandicarboxylic acid?
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Tech Serve Solutions supplies 2,5-Furandicarboxylic acid with an assay of 97%. We do not represent this product as USP, BP, EP, or other pharmacopoeial grades.
How should 2,5-Furandicarboxylic acid be handled safely?
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2,5-Furandicarboxylic acid is an irritant to the skin, eyes, and respiratory tract (H315, H319, H335). Handle with appropriate personal protective equipment in a well-ventilated area. Avoid breathing dust and ensure proper eye protection (P261, P305 + P351 + P338).
How is 2,5-Furandicarboxylic acid packaged and shipped?
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2,5-Furandicarboxylic acid is carefully packaged to maintain product integrity during transit. Tech Serve Solutions is an experienced global exporter, ensuring compliance with international shipping regulations.
How can I request a quote or sample of 2,5-Furandicarboxylic acid?
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To request a quote or a sample of 2,5-Furandicarboxylic acid, please contact our sales team through the website or via direct inquiry, providing your specific requirements.
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