| Molecular Formula | C8H4F2 |
| Molar Mass | 138.11 |
| Density | 1.163 g/mL at 25 °C (lit.) |
| Boling Point | 123-124 °C (lit.) |
| Flash Point | 78°F |
| Appearance | liquid |
| Color | Colorless to Light orange to Yellow |
| Storage Condition | 2-8°C |
| Refractive Index | n20/D 1.4910(lit.) |
| Physical and Chemical Properties | WGK Germany:3 |
| Hazard Symbols | Xi - Irritant![]() |
| Risk Codes | R10 - Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| UN IDs | UN 1993 3/PG 3 |
| WGK Germany | 3 |
| Hazard Note | Irritant |
| Hazard Class | 3 |
| Packing Group | Ⅲ |
| Use | 1-ethynyl-3, 5-difluorobenzene is used as a research compound. |