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Phenyl N-phenylphosphoramidochloridate

Also known as: N-Phenylphosphoramidochloridic acid phenyl ester, O-Phenyl N-phenylphosphoramidochloridate, N-[Chloro(phenoxy)phosphoryl]aniline, Phenyl phenylphosphoramidochloridate, N-Phenylamidochloridophosphoric acid phenyl ester, 3P-CL, MFCD00003029

Phenyl N-phenylphosphoramidochloridate (CAS 51766-21-3) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H11ClNO2P and a molecular weight of 267.64800 g/mol. Key properties include a melting point of 132-134ºC(lit.), a boiling point of 365.8ºC at 760 mmHg, a density of 1.363g/cm3 and a flash point of 175ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
51766-21-3
Jingsj CID
J-1965757-9
Molecular Formula
C12H11ClNO2P
Molecular Weight
267.64800 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point132-134ºC(lit.)
Boiling Point365.8ºC at 760 mmHg
Density1.363g/cm3
Flash Point175ºC
Exact Mass267.02200
PSA48.14000
LogP4.59740
Appearancesolid
Refractive Index1.622

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

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 Phenyl N-phenylphosphoramidochloridate?

The CAS number of Phenyl N-phenylphosphoramidochloridate is 51766-21-3.

What are the molecular formula and molecular weight of Phenyl N-phenylphosphoramidochloridate?

Phenyl N-phenylphosphoramidochloridate has molecular formula C12H11ClNO2P and molecular weight 267.64800 g/mol.

Is Phenyl N-phenylphosphoramidochloridate hazardous?

Phenyl N-phenylphosphoramidochloridate has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of Phenyl N-phenylphosphoramidochloridate?

For Phenyl N-phenylphosphoramidochloridate, Upstream Products: Phenyl dichlorophosphate, Sodium phenoxide, Aniline hydrochloride.

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

Last updated:

How to cite: Jingsj. "Phenyl N-phenylphosphoramidochloridate (CAS 51766-21-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1965757-9 (accessed 2026-11-09).

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