Molecular Formula | C5H5F3O2 |
Molar Mass | 154.09 |
Density | 1.27 g/mL at 25 °C (lit.) |
Boling Point | 105-107 °C (lit.) |
Flash Point | 79°F |
Water Solubility | slightly soluble |
Vapor Presure | 36.3mmHg at 25°C |
Appearance | Liquid |
Specific Gravity | 1.270 |
Color | deep brownish-yellow |
BRN | 1705177 |
pKa | 6.69±0.10(Predicted) |
Storage Condition | 2-8°C |
Refractive Index | n20/D 1.388(lit.) |
Risk Codes | R10 - Flammable R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S36/37 - Wear suitable protective clothing and gloves. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S16 - Keep away from sources of ignition. |
UN IDs | UN 1224 3/PG 3 |
WGK Germany | 3 |
TSCA | T |
HS Code | 29147090 |
Hazard Note | Flammable/Irritant |
Hazard Class | 3 |
Packing Group | III |
NIST chemical information | Information provided by: webbook.nist.gov (external link) |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
application | 1,1, 1-trifluoro-2, 4-pentandione, also known as trifluoroacetylacetone, is an important organic intermediate and has been widely used in many fields and has attracted attention. For example, in terms of solvent extraction, 1,1, 1-trifluoro-2, 4-pentanedione compounds are used as a chelating extractant, which can effectively extract a variety of common metal ions; metal β-diketone compounds As a metal organic precursor, it is widely used to deposit and grow various functional film materials, such as oxide superconducting films, electroluminescent films, ferroelectric oxide films, etc; the complexes formed by rare earth metals and β-diketones have good chemical stability and excellent luminescent properties, and have wide application prospects in the field of luminescence. |
Synthesis method | A method for synthesizing 1,1, 1-trifluoro-2, 4-pentanone, that is, using trifluoroacetate Ethyl acetate and acetone are used as raw materials to prepare 1,1, 1-trifluoro-2, 4-pentanone through Claisen condensation (Claisen) reaction. Experiments show that the suitable conditions for synthesizing 1,1, 1-trifluoro-2, 4-pentanone are as follows: using ethanol solution of sodium ethoxide as catalyst and anhydrous ether as solvent, reacting at 30 ℃ for 2 h, with a yield of 33%. The structure of 1,1, 1-trifluoro-2, 4-pentanone was confirmed by elemental analysis, infrared spectroscopy and nuclear magnetic resonance hydrogen spectroscopy. The synthesis reaction formula is as follows: Figure 1,1, 1-trifluoro-2, 4-pentanone synthesis reaction formula |