302912-34-1
302912-34-1 structure
- Name: BENZENE, 1-ETHYNYL-2,4-DIFLUORO-
- Chemical Name: 1-Ethynyl-2,4-difluorobenzene
- CAS Number: 302912-34-1
- Molecular Formula: C8H4F2
- Molecular Weight: 138.11400
- Catalog: Organic raw materials Hydrocarbon compounds and their derivatives Hydrocarbon halide
- Create Date: 2018-07-03 20:10:22
- Modify Date: 2025-08-28 17:58:26
| Name | 1-Ethynyl-2,4-difluorobenzene |
|---|---|
| Synonyms |
2,4-difluorophenylethyne
1-ethynyl-2,4-difluoro-benzene (2,4-difluorophenyl)acetylene 2,4-difluoroethynylbenzene 4-(2,4-difluorophenyl)but-3-yn-2-ol MFCD02093726 |
| Density | 1.17g/cm3 |
|---|---|
| Boiling Point | 134.7ºC at 760 mmHg |
| Melting Point | 29-32ºC(lit.) |
| Molecular Formula | C8H4F2 |
| Molecular Weight | 138.11400 |
| Flash Point | 92 °F |
| Exact Mass | 138.02800 |
| LogP | 1.94610 |
| Index of Refraction | 1.492 |
| Storage condition | 2-8°C |
| Symbol |
GHS02, GHS07 |
|---|---|
| Signal Word | Warning |
| Hazard Statements | H228-H315-H319-H335 |
| Precautionary Statements | P210-P280-P304 + P340 + P312-P305 + P351 + P338-P337 + P313 |
| Personal Protective Equipment | Eyeshields;full-face particle respirator type N100 (US);Gloves;respirator cartridge type N100 (US);type P1 (EN143) respirator filter;type P3 (EN 143) respirator cartridges |
| Hazard Codes | Xi: Irritant; |
| Risk Phrases | 10-36/37/38 |
| Safety Phrases | 16-26-36 |
| RIDADR | UN 1325 4.1/PG 3 |
| WGK Germany | 3 |
| Packaging Group | III |
| Hazard Class | 4.1 |
| HS Code | 2903999090 |
| Precursor 0 | |
|---|---|
| DownStream 4 | |
![6-[2-(2,4-difluorophenyl)ethynyl]-1-propan-2-ylsulfonylbenzimidazol-2-amine structure](https://image.chemsrc.com/caspic/164/849064-37-5.png)
| HS Code | 2903999090 |
|---|---|
| Summary | 2903999090 halogenated derivatives of aromatic hydrocarbons VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |