Perfluoropentanoic acid
Perfluoropentanoic acid (CAS: 2706-90-3), with the linear formula CF3(CF2)3COOH and a molecular weight of 264.05 g/mol, is a fluorinated carboxylic acid. It is primarily utilised in specialised chemical synthesis, particularly within the fields of fluorous synthesis and as a precursor for Rf-tagged building blocks. Its unique chemical properties make it a valuable reagent in advanced material science and research applications.
- IUPAC
- Nonafluoropentanoic acid,Perfluoropentanoic acid

Fluorous Synthesis
Perfluoropentanoic acid serves as a key component in fluorous synthesis techniques. Its highly fluorinated structure allows for selective separation and purification of reaction products in fluorous phases.
Rf-Tagged Building Blocks
This compound is used as a precursor for creating Rf-tagged molecules. These tagged molecules are important in diverse research areas, including combinatorial chemistry and high-throughput screening.
Specialty Chemical Synthesis
As a specialty chemical, Perfluoropentanoic acid is employed in niche synthetic pathways where its specific reactivity and properties are required for the creation of complex fluorinated compounds.
| Molecular weight | 264.05 |
|---|---|
| Linear formula | CF3(CF2)3COOH |
| Assay | ≥94% (GC) |
| Boiling point | 140 °C(lit.) |
| Density | 1.713 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.294(lit.) |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Transport (UN / ADR) | UN 3265 8 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 26-36/37/39-45 |
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 Perfluoropentanoic acid used for?
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Perfluoropentanoic acid is used in fluorous synthesis, as a precursor for Rf-tagged building blocks, and in specialty chemical synthesis.
What is the CAS number and formula for Perfluoropentanoic acid?
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The CAS number for Perfluoropentanoic acid is 2706-90-3, and its linear formula is CF3(CF2)3COOH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Perfluoropentanoic acid with an assay of ≥94% (GC). We do not represent this product as USP, BP, EP or any other pharmacopoeia grade.
What are the main hazards associated with Perfluoropentanoic acid?
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Perfluoropentanoic acid is classified as Danger, with Hazard Statement H314, indicating it causes severe skin burns and eye damage. Appropriate personal protective equipment, including faceshields, gloves, and suitable respirators, must be used when handling this chemical.
How is Perfluoropentanoic acid packed, shipped, and exported?
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Perfluoropentanoic acid is shipped as UN 3265, Class 8, Packing Group II. TSS exports this chemical globally, adhering to all relevant transport regulations.
How can I request a sample or quote for Perfluoropentanoic acid?
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To request a sample or a quote for Perfluoropentanoic acid, please contact our sales department through the website or by phone.
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