| M Formula: | C8H5F3 |
| Properties: | |
| Liquid. Bp 68C, fp −23C, refr index 1.474, d 1.22, dipole moment 1.98 (D). The polymer is soluble in toluene, chloroform, and methyl ethyl ketone and has dielectric constant of 2.56. Nonflammable. | |
| Use: | |
| Membranes for fuel tanks and water purification. | |