Introduction：Basic information about CAS 302912-34-1|BENZENE, 1-ETHYNYL-2,4-DIFLUORO-, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
| Common Name | BENZENE, 1-ETHYNYL-2,4-DIFLUORO- |
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| CAS Number | 302912-34-1 | Molecular Weight | 138.11400 |
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| Density | 1.17g/cm3 | Boiling Point | 134.7ºC at 760 mmHg |
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| Molecular Formula | C8H4F2 | Melting Point | 29-32ºC(lit.) |
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| MSDS | ChineseUSA | Flash Point | 92 °F |
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| Symbol |
GHS02, GHS07 | Signal Word | Warning |
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Names
| Name | 1-Ethynyl-2,4-difluorobenzene |
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| Synonym | More Synonyms |
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Chemical & Physical Properties
| Density | 1.17g/cm3 |
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| Boiling Point | 134.7ºC at 760 mmHg |
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| Melting Point | 29-32ºC(lit.) |
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| Molecular Formula | C8H4F2 |
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| Molecular Weight | 138.11400 |
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| Flash Point | 92 °F |
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| Exact Mass | 138.02800 |
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| LogP | 1.94610 |
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| Index of Refraction | 1.492 |
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| InChIKey | HRUJQXRGWQWYDH-UHFFFAOYSA-N |
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| SMILES | C#Cc1ccc(F)cc1F |
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| Storage condition | 2-8°C |
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Safety Information
| Symbol |
GHS02, GHS07 |
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| Signal Word | Warning |
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| Hazard Statements | H228-H315-H319-H335 |
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| Precautionary Statements | P210-P280-P304 + P340 + P312-P305 + P351 + P338-P337 + P313 |
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| 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 |
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| Hazard Codes | Xi: Irritant; |
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| Risk Phrases | 10-36/37/38 |
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| Safety Phrases | 16-26-36 |
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| RIDADR | UN 1325 4.1/PG 3 |
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| WGK Germany | 3 |
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| Packaging Group | III |
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| Hazard Class | 4.1 |
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| HS Code | 2903999090 |
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Customs
| HS Code | 2903999090 |
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| 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% |
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Articles3
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| Synthesis of glycidyl triazolyl polymers using click chemistry. Jung JH, et al. Tetrahedron Lett. 48(37) , 6442-6448, (2007)
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| Sulfonated poly (arylene ether) membranes containing perfluorocyclobutyl and ethynyl groups: Increased mechanical strength through chain extension and crosslinking. Lee SB, et al. J. Membr. Sci. 456 , 49-56, (2014)
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| Synthesis of 3, 4, 5-Trisubstituted Isoxazoles through Gold-Catalyzed Cascade Cyclization- Oxidative Alkynylation and Cyclization-Fluorination of 2-Alkynone O-Methyloximes. Song D-H and Ryu J-S. Bull. Korean Chem. Soc. 35(9) , 2635-2644, (2014)
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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 |
