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Diethyl 2-butenylphosphonate, predominantly trans

2-丁烯基膦酸二乙酯,主要为反式

Also known as: Diethyl 2-Buten-1-ylphosphonate, Diethyl but-2-en-1-ylphosphonate, Diethyl trans-crotyl phosphonate, crotyl phosphonate de diethyle, but-2-enyl-phosphonic acid diethyl ester, Phosphonic acid, 2-butenyl-, diethyl ester, MFCD05865177, (E)-1-diethoxyphosphorylbut-2-ene

Diethyl 2-butenylphosphonate, predominantly trans (CAS 682-34-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H17O3P and a molecular weight of 192.19300 g/mol. It is also known as Diethyl 2-Buten-1-ylphosphonate, Diethyl but-2-en-1-ylphosphonate and Diethyl trans-crotyl phosphonate. Key properties include a boiling point of 245.385ºC at 760 mmHg, a density of 1.014 g/mL at 25ºC(lit.) and a flash point of 219 °F. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
682-34-8
Jingsj CID
J-16697-9
Molecular Formula
C8H17O3P
Chinese Name
2-丁烯基膦酸二乙酯,主要为反式
Molecular Weight
192.19300 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point245.385ºC at 760 mmHg
Density1.014 g/mL at 25ºC(lit.)
Flash Point219 °F

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of Diethyl 2-butenylphosphonate, predominantly trans?

The CAS number of Diethyl 2-butenylphosphonate, predominantly trans is 682-34-8.

What are the molecular formula and molecular weight of Diethyl 2-butenylphosphonate, predominantly trans?

Diethyl 2-butenylphosphonate, predominantly trans has molecular formula C8H17O3P and molecular weight 192.19300 g/mol.

Is Diethyl 2-butenylphosphonate, predominantly trans hazardous?

Diethyl 2-butenylphosphonate, predominantly trans has GHS signal word Warning.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Diethyl 2-butenylphosphonate, predominantly trans (CAS 682-34-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-16697-9 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.