Butylphosphonic acid
1-丁基磷酸
Also known as: 1-Butanephosphonic acid, 1-Butylphosphonic acid, n-Butylphosphonic acid, Butanephosphonic acid, Butylphosphonic acid, Phosphonic acid, butyl-, NSC 38367, MFCD00012295
Butylphosphonic acid (CAS 3321-64-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H11O3P and a molecular weight of 138.10200 g/mol. It is also known as 1-Butanephosphonic acid, 1-Butylphosphonic acid and n-Butylphosphonic acid. Key properties include a melting point of 105-107ºC, a boiling point of 274.8ºC at 760mmHg, a density of 1.214g/cm3 and a flash point of 120ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3321-64-0
- Jingsj CID
- J-24787-8
- Molecular Formula
- C4H11O3P
- Chinese Name
- 1-丁基磷酸
- Molecular Weight
- 138.10200 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 105-107ºC |
|---|---|
| Boiling Point | 274.8ºC at 760mmHg |
| Density | 1.214g/cm3 |
| Flash Point | 120ºC |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of Butylphosphonic acid?
The CAS number of Butylphosphonic acid is 3321-64-0.
What are the molecular formula and molecular weight of Butylphosphonic acid?
Butylphosphonic acid has molecular formula C4H11O3P and molecular weight 138.10200 g/mol.
Is Butylphosphonic acid hazardous?
Butylphosphonic acid has GHS signal word Danger.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Butylphosphonic acid (CAS 3321-64-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-24787-8 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.