Phosphonoacetic acid
Also known as: 2-phosphonoacetic acid, carboxymethylphosphonic acid, Fosfonet, Fosfonoacetic acid, Phosphonoethanoic acid, AURORA KA-1453
Phosphonoacetic acid (CAS 4408-78-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C2H5O5P and a molecular weight of 140.03200 g/mol. Key properties include a melting point of 143-146 °C(lit.), a boiling point of 490.2ºC at 760mmHg and a density of 1.858g/cm3. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4408-78-0
- Jingsj CID
- J-50146-2
- Molecular Formula
- C2H5O5P
- Molecular Weight
- 140.03200 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 143-146 °C(lit.) |
|---|---|
| Boiling Point | 490.2ºC at 760mmHg |
| Density | 1.858g/cm3 |
| Exact Mass | 139.98700 |
| PSA | 104.64000 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
Customs & Trade Information
| HS Code | 2919900036 |
|---|---|
| Summary | 2919900036 2-phosphonoacetic acid |
Frequently Asked Questions
What is the CAS number of Phosphonoacetic acid?
The CAS number of Phosphonoacetic acid is 4408-78-0.
What are the molecular formula and molecular weight of Phosphonoacetic acid?
Phosphonoacetic acid has molecular formula C2H5O5P and molecular weight 140.03200 g/mol.
Is Phosphonoacetic acid hazardous?
Phosphonoacetic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of Phosphonoacetic acid?
For Phosphonoacetic acid, Upstream Products: Triethyl phosphonoacetate, Methyl 2-(diethoxyphosphoryl)acetate, Diethyl (cyanomethyl)phosphonate; Downstream Products: Trimethyl phosphonoacetate, Cyclopentylideneacetic acid methyl ester.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Phosphonoacetic acid (CAS 4408-78-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-50146-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.