Graphite Fluoride
Title: Graphite Fluoride
CAS Registry Number: 11113-63-6
CAS Name: Fluorine compd with graphite
Literature References: Non-wettable layered solid, CFx, (0.5<x<1.3), obtained by direct fluorination of graphite at high temp. Two covalent forms have been produced by controlling the quality of the graphite and the reaction temp: (CF)n at (300°-600°) and (C2F)n at (350°-400°). Composition and color are a function of the fluorination temp; the F/C ratio increases with increasing temp, and color changes from black to gray to white. Prepn: O. Ruff, O. Bretschneider, Z. Anorg. Allg. Chem. 217, 1 (1934); and thermal/electrical characteristics: C.-C. Hung et al., SAMPE Q. 19, 12 (1988). Evaluation as solid lubricant of (CFx)n: R. L. Fusaro, H. E. Sliney, ASLE Trans. 13, 56 (1970); of (C2F)n: H. Miyake et al., Proc. JSLE Int. Tribiol. Conf. 2, 395 (1985). Lubrication mechanism and wear life: R. L. Fusaro, Wear 53, 303 (1979). Brief review of physical properties: Central Glass Co. in Proc. BMRA Symp., Brussels 1983, A. Kozawa, M. Nagayama, Eds. (Battery Mat. Res. Assoc., 1984) 135-141; of prepn, properties and uses: T. Nakajima, N. Watanabe, Chemtech 1990, 426-430. Book: N. Watanabe et al., Graphite Fluorides (Elsevier Press, Amsterdam, 1988), 262 pp.
Derivative Type: (CF)n
Additional Names: Poly(carbon monofluoride)
Trademarks: Cefbon-CF (Central Glass)
Properties: Gray-white (commercial). d 2.58 g/cm3; packed bulk density 0.7 g/cm3. Insol in all solvents. Fluorine content: 61-64 wt%.
Density: d 2.58 g/cm3; packed bulk density 0.7 g/cm3
Derivative Type: (C2F)n
Additional Names: Poly(dicarbon monofluoride)
Trademarks: Cefbon-C2F (Central Glass)
Properties: Dark gray-black (commercial). d 2.79 g/cm3; packed bulk density 0.8 g/cm3. Insol in all solvents. Fluorine content: 49-53 wt%.
Density: d 2.79 g/cm3; packed bulk density 0.8 g/cm3
Use: Solid lubricant; as cathode material in lithium-fluoride batteries; in controlling wettability of surfaces.

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