Cobalt difluoride

Cobalt difluoride [10026-17-2] C0F2, is a pink solid having a magnetic moment of 4, 266 x 10 J/T (4.6 Bohr magneton) (1) and closely resembling the ferrous (Fep2) compounds. Physical properties are Hsted in Table 1. Cobalt(II) fluoride is highly stable. No decomposition or hydrolysis has been observed in samples stored in plastic containers for over three years. 

Cobalt difluoride, used primarily for the manufacture of cobalt trifluoride, CoF, is available from Advance Research Chemicals, Inc., Aldrich Chemicals, and PCR in the United States, Fluorochem in the UK, and Schuhardt in Germany. The 1993 price varied from 60 to 200/kg depending on the quantity and the price of cobalt metal. C0F2 is shipped as a corrosive and toxic material in DOT-approved containers. 

Cobalt difluoride, 7 231-232 Cobalt dilanthanum tetroxide, uses, 7 24 It Cobalt driers, 9 147-148 CobaltCII) ethylhexanoate, 7 230 Cobalt extraction, 10 791 Cobalt fluoroborate hexahydrate, 4 157t, 158, 159... 

Formula C0F2 MW 96.93 also forms di- tri- and tetrahydrates. Synonyms cobaltous fluoride cobalt difluoride... 

Coboltous Fluoride or Cobalt Difluoride, C0F2, mw 96.94, red-rose crysts or powd, mp ca 1200°, bp 1400° sol in cold w Sr hydrofluoric acid decomp xn hot w highly toxic iintant. 

The preparation of perfluorinated compounds is largely based on the exhaustive fluorination of the corresponding hydrocarbon species and three synthetic procedures have been widely used. Two of these processes, electrochemical fluorination [27] (ECF), successfully used for the preparation of perfluoroacids (3M), and fluorination by high valent metal fluorides [28] such as cobalt trifluoride (itself prepared from cobalt difluoride and fluorine), used for the preparation of perfluorocarbons (Flutec fluids, BNFL), have been reviewed elsewhere. The third major process for the preparation of perfluorinated compounds involves direct fluorination. 

The anhydrous halides CoX2 may be made from the hydrated halides by heating or treatment with SOCl2 Cobalt difluoride is obtained by reacting CoCl2 with HF it has the rutile structure. Like the dichlorides of Mg, Mn, and Fe, blue CoCl2 adopts the CdCl2 structure. 

Properties Light-brown, free-flowing powder. D 3.88 (25C), no odor except hydrogen fluoride odor developed in moist air stable in sealed containers reacts readily with moisture in the atmosphere to form a dark, almost black powder reacts with water to form a black, finely divided precipitate (cobaltic hydroxide). Insoluble in alcohol and benzene. As a fluorinating agent, yields one atom of fluorine and reverts to the difluoride. The spent cobalt difluoride may be regenerated with elemental fluorine. 

CoF2 COBALT DIFLUORIDE 540 Cr2Mg04 DICHROMIUM MAGNESIUM TETRAOXIDE 576... 

CoF2[g] COBALT DIFLUORIDE (GAS) 541 Cr2Ni04 DICHROMIUM NICKEL TETRAOXIDE 577... 

EXPLOSION and FIRE CONCERNS combustible solid in powder form flammable when exposed to flame or by chemical reaction with oxidizers NFPA rating (not available) reacts violently with alkali carbonates, oxidants, calcium, cesium carbide, cobalt difluoride, iodine pentafluoride, manganese trifluoride, nitrosyl fluoride, silver fluoride, and sodium-potassium alloys bums in fluorine and chlorine will react with water or steam to produce hydrogen when heated in case of fire, all extinguishing agents are allowed for firefighting purposes. 

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