Ethyl 1,1,2,2-tetrafluoroethyl ether Chemical Properties

Boiling point:

57 °C

Density 

1.198

refractive index 

1.294

Flash point:

56-58°C

form 

clear liquid

color 

Colorless to Almost colorless

Specific Gravity

1.198

CAS DataBase Reference

512-51-6(CAS DataBase Reference)

EPA Substance Registry System

Ethane, 1-ethoxy-1,1,2,2-tetrafluoro- (512-51-6)

Safety Information

Hazard Codes 

F,Xi

Risk Statements 

11

Safety Statements 

16-23-33

RIDADR 

3271

RTECS 

KI3590000

Hazard Note 

Flammable

HazardClass 

3

PackingGroup 

II

HS Code 

2909199090

Toxicity

LC inhalation in rat: > 30000ppm/4H

MSDS

• Language:English Provider:ALFA

Ethyl 1,1,2,2-tetrafluoroethyl ether Usage And Synthesis

Description

Ethyl 1,1,2,2-tetrafluoroethyl ether (ETFE) is a fluorinated linear ether with several fundamental properties that make it useful in batteries. First, ETFE is miscible with many polar organic solvents used in electrolyte formulations, which improves the ionic conductivity of the battery. Additionally, ETFE has a relatively low viscosity (486 mPa?s at 23 °C) and a low boiling point (58 °C), which make it a versatile diluent for low-temperature applications.

Uses

Ethyl 1,1,2,2-tetrafluoroethyl ether (ETFE) is a highly effective additive in lithium-ion and sodium-ion batteries for improving battery performance, increasing safety, and reducing flammability. ETFE is a versatile co-solvent with high miscibility, which allows it to be blended with other solvents to achieve high ionic conductivities. It is also a good SEI-forming electrolyte additive, stabilizing the Na electrode surface and enhancing the stability of high-voltage batteries. ETFE is particularly useful as an electrolyte co-solvent in lithium-sulfur (Li-S) batteries. Studies have shown that ETFE-containing electrolytes improve the stability of the electrolyte/anode interface and enhance the cycling, rate, and self-discharging of the Li-S cell more than glyme-based cosolvents or unblended solvents.

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