Diethyl phosphate
Also known as: Diethyl hydrogen phosphate, O,O-Diethyl hydrogen phosphate, Diethyl acid phosphate, Phosphoric acid, diethyl ester, Chlorpyrifos impurity 3 (diethyl phosphate), O,O-diethylphosphoric acid, diethylphosphoric acid, di-ethylphosphat
Diethyl phosphate (CAS 598-02-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H11O4P and a molecular weight of 154.102 g/mol. Key properties include a melting point of 6ºC, a boiling point of 200.3±23.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 74.9±22.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 598-02-7
- Jingsj CID
- J-1968832-5
- Molecular Formula
- C4H11O4P
- Molecular Weight
- 154.102 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 6ºC |
|---|---|
| Boiling Point | 200.3±23.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 74.9±22.6 °C |
| Exact Mass | 154.039490 |
| PSA | 65.57000 |
| LogP | 0.08 |
| Appearance | Liquid | Clear colorless to light yellow-orange |
| Vapor Pressure | 0.1±0.8 mmHg at 25°C |
| Refractive Index | 1.418 |
Frequently Asked Questions
What is the CAS number of Diethyl phosphate?
The CAS number of Diethyl phosphate is 598-02-7.
What are the molecular formula and molecular weight of Diethyl phosphate?
Diethyl phosphate has molecular formula C4H11O4P and molecular weight 154.102 g/mol.
What are the upstream and downstream products of Diethyl phosphate?
For Diethyl phosphate, Upstream Products: Dioctyl phosphonate, Diethyl phosphite, Benzaldehyde; Downstream Products: Diphenyl phosphite, Diethyl allyl phosphate, Diethyl anilinophosphonate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Diethyl phosphate (CAS 598-02-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1968832-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.