Hexadecylphosphonic acid
Hexadecylphosphonic acid (CAS: 4721-17-9, C16H35O3P) is a phosphonic acid derivative with a molecular weight of 306.42 g/mol. This compound serves as a valuable building block in chemical synthesis and finds applications in materials science, particularly in micro/nanoelectronics. Its properties are utilised in self-assembly processes and contact printing techniques, contributing to the development of advanced materials.
- IUPAC
- n-Hexadecylphosphonic acid,HDPA

Chemical Synthesis
Hexadecylphosphonic acid is utilised as a key intermediate and building block in organic synthesis. Its phosphonic acid functionality allows for versatile chemical transformations.
Materials Science
This compound plays a role in the development of novel materials. It is particularly relevant for applications in micro and nanoelectronics due to its surface modification capabilities.
Self-Assembly and Contact Printing
Hexadecylphosphonic acid is employed in self-assembly processes and contact printing techniques. It can form ordered molecular layers on various surfaces.
| Molecular weight | 306.42 |
|---|---|
| Empirical formula | C16H35O3P |
| Assay | 97% |
| Storage temperature | 2-8°C |
| Melting point | 88-93 °C |
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 Hexadecylphosphonic acid used for?
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Hexadecylphosphonic acid is primarily used as a building block in chemical synthesis and in materials science, including micro/nanoelectronics, and for self-assembly processes.
What is the CAS number and formula for Hexadecylphosphonic acid?
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The CAS number is 4721-17-9 and the empirical formula (Hill notation) is C16H35O3P.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Hexadecylphosphonic acid with an assay of 97%. We do not represent this product as USP, BP, EP, or pharmacopoeia grade.
How should Hexadecylphosphonic acid be handled and stored?
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Hexadecylphosphonic acid is classified under WGK 2 in Germany, indicating it is hazardous to water. It should be stored at 2-8°C. Please refer to the safety data sheet for detailed handling instructions.
Is Hexadecylphosphonic acid a controlled substance?
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Based on the provided data, there is no indication that Hexadecylphosphonic acid is a controlled substance.
How is Hexadecylphosphonic acid packed, shipped, and exported?
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Tech Serve Solutions is a global supplier and exporter of fine chemicals. Specific packaging and shipping details are available upon request, adhering to international regulations.
How can I request a quote or sample of Hexadecylphosphonic acid?
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To request a quote or a sample of Hexadecylphosphonic acid, please contact our sales team through the website or by phone.
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