Hexadecylphosphonic acid
正十六烷基膦酸
Also known as: HDPA, n-Hexadecylphosphonic acid, 1-Hexadecylphosphonic acid, Hexadecylphosphonic acid 97%, P-hexadecyl-Phosphonic acid
Hexadecylphosphonic acid (CAS 4721-17-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C16H35O3P and a molecular weight of 306.42100 g/mol. It is also known as HDPA, n-Hexadecylphosphonic acid and 1-Hexadecylphosphonic acid. Key properties include a melting point of 95 °C, a boiling point of 467.5ºC at 760mmHg, a density of 1.246g/cm3 and a flash point of 236.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4721-17-9
- Jingsj CID
- J-35169-4
- Molecular Formula
- C16H35O3P
- Chinese Name
- 正十六烷基膦酸
- Molecular Weight
- 306.42100 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 95 °C |
|---|---|
| Boiling Point | 467.5ºC at 760mmHg |
| Density | 1.246g/cm3 |
| Flash Point | 236.6ºC |
Frequently Asked Questions
What is the CAS number of Hexadecylphosphonic acid?
The CAS number of Hexadecylphosphonic acid is 4721-17-9.
What are the molecular formula and molecular weight of Hexadecylphosphonic acid?
Hexadecylphosphonic acid has molecular formula C16H35O3P and molecular weight 306.42100 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Hexadecylphosphonic acid (CAS 4721-17-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35169-4 (accessed 2026-10-23).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.