Chemical name£ºFluoro Ethylene Carbonate
4-Fluoro-1,3-dioxolan-2-one
CAS NO£º114435-02-8
Formula£ºC3H3FO3
Molecular weight£º106.05
Structure formula£º 
Product Properties
Fluoroethylene carbonate (FEC) is colorless transparent liquid over 25¡æ with the molecular formula C3H3FO3 and the melting point 18~23¡æ. The boiling point of FEC is 212¡æ£¬as the relative density is 1.454g/ml.
Specifications and Quality Standards
No. | Items | E-Grade |
1 | Appearance | Colorless transparent liquid (£¾25¡æ) |
2 | Purity£¨by GC£© | ¡Ý99.95% |
3 | Moisture | ¡Ü20 mg/kg |
4 | Free Acid£¨HF£© | ¡Ü20 mg/kg |
5 | Chromaticity(APHA) | ¡Ü10 Hazen |
6 | Metallon £¨Na\K\Fe\Zn\Ni\Mg\Ca\Pb£© | ¡Ü1 mg/kg |
Application
FEC is the main electrolyte additive in lithium ion batteries£¨LIB£©. FEC enables the formation of passive solid electrolyte interphase layer. With compact construction without increasing electrical impedance, that SEI film has better performance in LIB, which can significantly improve the performance of the electrolyte under low temperature.
Packaging and storage
This product is packed in stainless steel barrels with quick joint (N2 pressure: 0.11~0.13MPa ), with packing specification 200kg/200L, 100kg/100L or 25kg/25L. It should be stored in a cool, dry and draughty warehouse.
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