| Product Name | Diphosgene |
| CAS No. | 503-38-8 |
| Synonyms | Trichloromethyl chloroformate; trichloromethyl chlorocarbonate |
| Molecular Formula | C2Cl4O2 |
| Molecular Weight | 197.8322 |
| Density | 1.788g/cm3 |
| Melting point | -57℃ |
| Boiling point | 128°C at 760 mmHg |
| Flash point | 32.2°C |
| Water solubility | may decompose |
| Refractive index | 1.498 |
| Hazard Symbols |  T+:Very toxic; |
| Risk Codes | R26/27/28:; R34:; |
| Safety | S26:; S28A:; S36/37/39:; S45:; |
503-38-8 diphosgene
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