Tetraethyl methylenediphosphonate
Also known as: Tetraethyl methylenebis(phosphonate), BIS(DIETHOXYPHOSPHINYL)METHANE, METHYLENEDIPHOSPHONIC ACID TETRAETHYL ESTER, Methylenebis(diethylphosphonate), TETRAETHYL(METHYLENE)BISPHOSPHONATE, 1-[diethoxyphosphorylmethyl(ethoxy)phosphoryl]oxyethane, AURORA KA-1506, NSC 133889
Tetraethyl methylenediphosphonate (CAS 1660-94-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H22O6P2 and a molecular weight of 288.215 g/mol. Key properties include a boiling point of 319.9±0.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 185.9±43.5 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1660-94-2
- Jingsj CID
- J-13888-5
- Molecular Formula
- C9H22O6P2
- Molecular Weight
- 288.215 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 319.9±0.0 °C at 760 mmHg |
|---|---|
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 185.9±43.5 °C |
| Exact Mass | 288.089172 |
| PSA | 90.68000 |
| LogP | 0.50 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.428 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2916190090 |
|---|---|
| Summary | 2916190090 unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tariff:6.5%。general tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Tetraethyl methylenediphosphonate?
The CAS number of Tetraethyl methylenediphosphonate is 1660-94-2.
What are the molecular formula and molecular weight of Tetraethyl methylenediphosphonate?
Tetraethyl methylenediphosphonate has molecular formula C9H22O6P2 and molecular weight 288.215 g/mol.
Is Tetraethyl methylenediphosphonate hazardous?
Tetraethyl methylenediphosphonate has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Tetraethyl methylenediphosphonate (CAS 1660-94-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-13888-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.