Benzophosphoryl dichloride CAS Number: 824-72-6
Pharmaceutical Materials 2025-03-02
CAS Number: 824-72-6
Molecular Formula: C6H5Cl2OP
Molecular Weight: 194.98 g/mol
Appearance: Colorless liquid
Melting Point: 3 °C Boiling Point: 258 °C
Usage: Used in the production of phenylphosphonic acid and esters, as well as flame-retardant polymers.
Benzophosphoryl dichloride, also known as phenylphosphonic dichloride, is a chemical compound with the CAS number 824-72-6. It is a colorless to light yellow liquid with a slight fruity odor. This compound is widely used in organic synthesis, particularly in the production of benzophosphonic acids and esters. Due to its reactive chlorine atoms, benzophosphoryl dichloride readily reacts with water, alcohols, and amines to form a variety of compounds. It is also employed as an intermediate in the synthesis of flame-retardant polymers and thermal stabilizers for polyesters. However, it should be handled with caution as it is corrosive and can cause severe irritation to skin and eyes.
| Property | Value |
|---|---|
| CAS Number | 824-72-6 |
| Physical Properties | |
| – Appearance | Colorless to light yellow liquid |
| – Odor | Slight fruity |
| – Density | 1.375 g/mL at 25°C |
| – Melting Point | 3°C |
| – Boiling Point | 258°C |
| – Flash Point | 204°C |
| – Refractive Index | 1.559 (n20/D) |
| Chemical Properties | |
| – Molecular Formula | C6H5Cl2OP |
| – Molecular Weight | 194.98 g/mol |
| – Solubility | Soluble in benzene, chloroform, and carbon tetrachloride |
| – Reactivity | Reactive with water, alcohols, and amines |
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