dimethyl vinylphosphonate
二甲基-乙烯基磷酸酯
Also known as: Dimethyl vinylphosphonate, dimethyl ethenylphosphonate, 1-dimethoxyphosphorylethene, Ethenylphosphonic acid dimethyl ester, Vinylphosphonic acid dimethyl ester, Vinylphosphonsuredimethylester
dimethyl vinylphosphonate (CAS 4645-32-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H9O3P and a molecular weight of 136.08600 g/mol. It is also known as Dimethyl vinylphosphonate, dimethyl ethenylphosphonate and 1-dimethoxyphosphorylethene. Key properties include a melting point of <-30°C, a boiling point of 197ºC, a density of 1.13 and a flash point of 101ºC. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4645-32-3
- Jingsj CID
- J-1098378-6
- Molecular Formula
- C4H9O3P
- Chinese Name
- 二甲基-乙烯基磷酸酯
- Molecular Weight
- 136.08600 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | <-30°C |
|---|---|
| Boiling Point | 197ºC |
| Density | 1.13 |
| Flash Point | 101ºC |
| Exact Mass | 136.02900 |
| PSA | 45.34000 |
| LogP | 1.61580 |
| Appearance | liquid | colorless |
| Refractive Index | n20/D 1.428 |
| Storage Conditions | 2-8°C |
| Stability | store cold |
| Additional Property | Fully miscible in water. |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
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 dimethyl vinylphosphonate?
The CAS number of dimethyl vinylphosphonate is 4645-32-3.
What are the molecular formula and molecular weight of dimethyl vinylphosphonate?
dimethyl vinylphosphonate has molecular formula C4H9O3P and molecular weight 136.08600 g/mol.
Is dimethyl vinylphosphonate hazardous?
dimethyl vinylphosphonate has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "dimethyl vinylphosphonate (CAS 4645-32-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1098378-6 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.