Diethyl 1-phenylethylphosphonate

1-苯乙基膦酸二乙酯

Also known as: Phosphonic acid, P-(1-phenylethyl)-, diethyl ester, Phosphonic acid, (1-phenylethyl)-, diethyl ester, Diethyl 1-phenylethyl phosphonate, diethyl(alpha-methylbenzyl)phosphonate, NSC 220102, MFCD00961781, 1-diethoxyphosphorylethylbenzene, (1-Phenylethyl)phosphonic acid diethyl ester

Diethyl 1-phenylethylphosphonate (CAS 33973-48-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H19O3P and a molecular weight of 242.25100 g/mol. It is also known as Phosphonic acid, P-(1-phenylethyl)-, diethyl ester, Phosphonic acid, (1-phenylethyl)-, diethyl ester and Diethyl 1-phenylethyl phosphonate. Key properties include a boiling point of 328ºC at 760mmHg, a density of 1.072g/cm3 and a flash point of 166ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
33973-48-7
Jingsj CID
J-1398606-3
Molecular Formula
C12H19O3P
Chinese Name
1-苯乙基膦酸二乙酯
Molecular Weight
242.25100 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point328ºC at 760mmHg
Density1.072g/cm3
Flash Point166ºC
Exact Mass242.10700
PSA45.34000
LogP4.01370
Refractive Indexn20/D 1.496(lit.)

Customs & Trade Information

HS Code2931900090
Summary2931900090. 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 Diethyl 1-phenylethylphosphonate?

The CAS number of Diethyl 1-phenylethylphosphonate is 33973-48-7.

What are the molecular formula and molecular weight of Diethyl 1-phenylethylphosphonate?

Diethyl 1-phenylethylphosphonate has molecular formula C12H19O3P and molecular weight 242.25100 g/mol.

What are the upstream and downstream products of Diethyl 1-phenylethylphosphonate?

For Diethyl 1-phenylethylphosphonate, Upstream Products: 1-Phenylethanol, Triethyl phosphite, (S)-(-)-1-Phenylethanol.

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

Last updated:

How to cite: Jingsj. "Diethyl 1-phenylethylphosphonate (CAS 33973-48-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1398606-3 (accessed 2026-10-28).

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