4-Phosphonobutyric acid
4-膦酰基丁酸
Also known as: 4-Phosphonobutanoic acid, Butanoic acid, 4-phosphono-, 4-Phosphonobutanoic acid, 98%, (3-Carboxypropyl)phosphonic acid, 4-Phosphono-buttersaeure, 4-Phosphonobutyrate
4-Phosphonobutyric acid (CAS 4378-43-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H9O5P and a molecular weight of 168.085 g/mol. It is also known as 4-Phosphonobutanoic acid, Butanoic acid, 4-phosphono- and 4-Phosphonobutanoic acid, 98%. Key properties include a melting point of 127-129ºC, a boiling point of 465.0±47.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 235.0±29.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4378-43-2
- Jingsj CID
- J-2962-9
- Molecular Formula
- C4H9O5P
- Chinese Name
- 4-膦酰基丁酸
- Molecular Weight
- 168.085 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 127-129ºC |
|---|---|
| Boiling Point | 465.0±47.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 235.0±29.3 °C |
Frequently Asked Questions
What is the CAS number of 4-Phosphonobutyric acid?
The CAS number of 4-Phosphonobutyric acid is 4378-43-2.
What are the molecular formula and molecular weight of 4-Phosphonobutyric acid?
4-Phosphonobutyric acid has molecular formula C4H9O5P and molecular weight 168.085 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Phosphonobutyric acid (CAS 4378-43-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-2962-9 (accessed 2026-10-23).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.