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Diethyl (phthalimidomethyl)phosphonate

Also known as: Diethyl (phthalimidomethyl)phosphonate, Diethyl N-phthalimidomethanephosphonate, (Phthalimidomethyl)phosphonic acid diethyl ester, 2-(Diethoxyphosphorylmethyl)isoindole-1,3-dione, Diethyl [(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl]phosphonate, Diethyl (phtalimidomethyl)phosphonate, Diethyl phthalimidomethyl phosphate, MFCD00134313, Diethyl(phthalimidomethyl)phosphonate, 97%, LABOTEST-BB LT00452168

Diethyl (phthalimidomethyl)phosphonate (CAS 33512-26-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H16NO5P and a molecular weight of 297.244 g/mol. Key properties include a melting point of 60-64 °C(lit.), a boiling point of 423.3±28.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 209.8±24.0 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
33512-26-4
Jingsj CID
J-1418420-4
Molecular Formula
C13H16NO5P
Molecular Weight
297.244 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point60-64 °C(lit.)
Boiling Point423.3±28.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point209.8±24.0 °C
Exact Mass297.076599
PSA82.72000
LogP1.76
Vapor Pressure0.0±1.0 mmHg at 25°C
Refractive Index1.541

GHS Safety & Compliance

Acute ToxicitySignal word: Danger
  • H301 — Toxic if swallowed

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 (phthalimidomethyl)phosphonate?

The CAS number of Diethyl (phthalimidomethyl)phosphonate is 33512-26-4.

What are the molecular formula and molecular weight of Diethyl (phthalimidomethyl)phosphonate?

Diethyl (phthalimidomethyl)phosphonate has molecular formula C13H16NO5P and molecular weight 297.244 g/mol.

Is Diethyl (phthalimidomethyl)phosphonate hazardous?

Diethyl (phthalimidomethyl)phosphonate has GHS signal word Danger and hazard statements H301 — Toxic if swallowed.

What are the upstream and downstream products of Diethyl (phthalimidomethyl)phosphonate?

For Diethyl (phthalimidomethyl)phosphonate, Upstream Products: N-(Bromomethyl)phthalimide, Triethyl phosphite, N-(tert-Butyldimethylsilyl)phthalimide; Downstream Products: (Aminomethyl)phosphonic acid.

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

Last updated:

How to cite: Jingsj. "Diethyl (phthalimidomethyl)phosphonate (CAS 33512-26-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1418420-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.