579-39-5
579-39-5 structure
- Name: 1,2-Bis(4-fluorophenyl)-1,2-ethanedione
- Chemical Name: 4,4'-difluorobenzil
- CAS Number: 579-39-5
- Molecular Formula: C14H8F2O2
- Molecular Weight: 246.209
- Create Date: 2018-04-25 08:00:00
- Modify Date: 2025-08-20 15:03:58
| Name | 4,4'-difluorobenzil |
|---|---|
| Synonyms |
1,2-bis(4-fluorophenyl)ethane-1,2-dione
1,2-Ethanedione, 1,2-bis(4-fluorophenyl)- 1,2-Bis(4-fluorophenyl)-1,2-ethanedione MFCD00134541 |
| Density | 1.3±0.1 g/cm3 |
|---|---|
| Boiling Point | 370.2±27.0 °C at 760 mmHg |
| Melting Point | 120-122 °C(lit.) |
| Molecular Formula | C14H8F2O2 |
| Molecular Weight | 246.209 |
| Flash Point | 141.5±17.9 °C |
| Exact Mass | 246.049240 |
| PSA | 34.14000 |
| LogP | 3.82 |
| Vapour Pressure | 0.0±0.8 mmHg at 25°C |
| Index of Refraction | 1.562 |
| Symbol |
GHS07 |
|---|---|
| Signal Word | Warning |
| Hazard Statements | H315-H319-H335 |
| Precautionary Statements | P261-P305 + P351 + P338 |
| Personal Protective Equipment | dust mask type N95 (US);Eyeshields;Gloves |
| Hazard Codes | Xi:Irritant; |
| Risk Phrases | R36/37/38 |
| Safety Phrases | S26-S37/39 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | 3 |
| HS Code | 2914700090 |
| Precursor 9 | |
|---|---|
| DownStream 9 | |
| HS Code | 2914700090 |
|---|---|
| Summary | HS: 2914700090 halogenated, sulphonated, nitrated or nitrosated derivatives of ketones and quinones, whether or not with other oxygen function Tax rebate rate:9.0% Supervision conditions:none VAT:17.0% MFN tariff:5.5% General tariff:30.0% |