Fluoroethylene carbonate
Synonym(s):4-Fluoro-1,3-dioxolan-2-one;FEC
- CAS NO.:114435-02-8
- Empirical Formula: C3H3FO3
- Molecular Weight: 106.05
- MDL number: MFCD06247543
- EINECS: 483-360-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-10-29 09:31:49
What is Fluoroethylene carbonate?
Chemical properties
Colorless liquid
The Uses of Fluoroethylene carbonate
4-Fluoro-1,3-dioxolan-2-one is used as an electrolyte additive in lithium ion batteries. It also enables the formation of thin, smooth and stable passive solid electrolyte interphase (SEI) layer, which increases the cycling efficiency and discharge capacity retention of the secondary battery. Further, it is used as an intermediate in organic synthesis.
Preparation
The preparation of Fluoroethylene carbonate is as follows:Add 114g of liquid ethylene carbonate at 50, 1.14g of palladium acetate (II) and 114g of dry acetonitrile (water 100ppm) to a 500ml Monel reactor containing the monophenyl iodine difluoride prepared in step (1) , Stir at 50°C for 0.5h, raise the temperature to 70°C and react for 5h (the molar ratio of ethylene carbonate to hydrogen fluoride in step (1) is 1.1:2.5, the molar ratio of ethylene carbonate to acetonitrile is 1.1:2.8, palladium acetate (II) The dosage is 1.0% of the mass of ethylene carbonate). The tail gas during the reaction was absorbed by potassium hydroxide solution with a mass fraction of 10%. After the reaction, vacuum distillation was carried out under the condition of 3mmHg. The 65-71°C fraction was collected to obtain 103.3g of fluoroethylene carbonate with a GC content of 99.3%. The yield of FEC was 75%.
General Description
Fluoroethylene carbonate (FEC) can be used as a co-solvent for the formation of electrolytes, which can exhibit a reversible capacity of 2.5 Ah g?1. It can be further used in the fabrication of lithium-ion batteries. FEC enables the formation of thin, smooth and stable passive solid electrolyte interphase (SEI) layer, which is insoluble in the electrolyte, in turn increasing the cycling efficiency and discharge capacity retention of the secondary battery.
Flammability and Explosibility
Not classified
Properties of Fluoroethylene carbonate
Melting point: | 18-23 °C |
Boiling point: | 212℃ |
Density | 1.454 |
vapor pressure | 51Pa at 25℃ |
refractive index | 1.3960 to 1.4000 |
Flash point: | >102°(216°F) |
storage temp. | 2-8°C |
form | Liquid |
color | Colorless |
Water Solubility | Slightly miscible with water. |
InChI | InChI=1S/C3H3FO3/c4-2-1-6-3(5)7-2/h2H,1H2 |
CAS DataBase Reference | 114435-02-8(CAS DataBase Reference) |
EPA Substance Registry System | 1,3-Dioxolan-2-one, 4-fluoro- (114435-02-8) |
Safety information for Fluoroethylene carbonate
Signal word | Warning |
Pictogram(s) |
Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H317:Sensitisation, Skin H319:Serious eye damage/eye irritation |
Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P333+P313:IF SKIN irritation or rash occurs: Get medical advice/attention. P337+P313:IF eye irritation persists: Get medical advice/attention. |
Computed Descriptors for Fluoroethylene carbonate
InChIKey | SBLRHMKNNHXPHG-UHFFFAOYSA-N |
SMILES | O1CC(F)OC1=O |
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