Triethyl 4-phosphonocrotonate
4-膦酰丁烯酸三乙脂
Also known as: EINECS 243-748-5, Einecs 243-748-5, TRIETHYL-4-PHOSPONOCROTONATE, ethyl 2-(diethoxyphosphinyl)but-2-enoate, Tthyl 2-(diethoxyphosphinyl)but-2-enoate, Ethyl (2E)-4-(diethoxyphosphoryl)-2-butenoate, 4-(Diethoxyphosphinyl)-2-butenoic acid ethyl ester, 2-Butenoic acid, 2-(diethoxyphosphinyl)-, ethyl ester, [3-(Ethoxycarbonyl)allyl]phosphonic acid diethyl ester, 4-Phosphonocrotonic acid triethyl ester~Triethyl trans-4-phosphono-2-butenoate
Triethyl 4-phosphonocrotonate (CAS 20345-62-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H19O5P and a molecular weight of 250.22900 g/mol. It is also known as EINECS 243-748-5, Einecs 243-748-5 and TRIETHYL-4-PHOSPONOCROTONATE. Key properties include a boiling point of 327.3ºC at 760mmHg, a density of 1.1g/cm3 and a flash point of 165.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20345-62-4
- Jingsj CID
- J-13236-5
- Molecular Formula
- C10H19O5P
- Chinese Name
- 4-膦酰丁烯酸三乙脂
- Molecular Weight
- 250.22900 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 327.3ºC at 760mmHg |
|---|---|
| Density | 1.1g/cm3 |
| Flash Point | 165.5ºC |
| Exact Mass | 250.09700 |
| PSA | 71.64000 |
| LogP | 2.37180 |
| Vapor Pressure | 0.000204mmHg at 25°C |
| Refractive Index | 1.444 |
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 Triethyl 4-phosphonocrotonate?
The CAS number of Triethyl 4-phosphonocrotonate is 20345-62-4.
What are the molecular formula and molecular weight of Triethyl 4-phosphonocrotonate?
Triethyl 4-phosphonocrotonate has molecular formula C10H19O5P and molecular weight 250.22900 g/mol.
What are the upstream and downstream products of Triethyl 4-phosphonocrotonate?
For Triethyl 4-phosphonocrotonate, Upstream Products: Triethyl 2-phosphonobutyrate.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Triethyl 4-phosphonocrotonate (CAS 20345-62-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-13236-5 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.