(2-Hydroxyethyl)phosphonic acid
Also known as: 2-Hydroxyethylphosphonic acid, 2-Hydroxyethanephosphonic acid, 2-Hydroxyethanphosphonseaure, 2-Hydroxyethylphosphonate, Phosphonic acid, P-(2-hydroxyethyl)-
(2-Hydroxyethyl)phosphonic acid (CAS 22987-21-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C2H7O4P and a molecular weight of 126.04800 g/mol. Key properties include a boiling point of 398.8ºC at 760mmHg, a density of 1.611g/cm3 and a flash point of 195ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 22987-21-9
- Jingsj CID
- J-1135705-4
- Molecular Formula
- C2H7O4P
- Molecular Weight
- 126.04800 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 398.8ºC at 760mmHg |
|---|---|
| Density | 1.611g/cm3 |
| Flash Point | 195ºC |
| Exact Mass | 126.00800 |
| PSA | 87.57000 |
| Vapor Pressure | 5.14E-08mmHg at 25°C |
| Refractive Index | 1.494 |
Customs & Trade Information
| HS Code | 2931900090 |
|---|---|
| Summary | 2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of (2-Hydroxyethyl)phosphonic acid?
The CAS number of (2-Hydroxyethyl)phosphonic acid is 22987-21-9.
What are the molecular formula and molecular weight of (2-Hydroxyethyl)phosphonic acid?
(2-Hydroxyethyl)phosphonic acid has molecular formula C2H7O4P and molecular weight 126.04800 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(2-Hydroxyethyl)phosphonic acid (CAS 22987-21-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1135705-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.