Cobaltous Nitrate
Structural Formula Vector Image
Title: Cobaltous Nitrate
CAS Registry Number: 10141-05-6
Molecular Formula: CoN2O6
Molecular Weight: 182.94
Percent Composition: Co 32.21%, N 15.31%, O 52.47%
Line Formula: Co(NO3)2
Literature References: Prepn: Gmelins, Cobalt (8th ed.) 58 (part A), 252-262 (1932) and supplement, 515-521 (1961); Weigel et al., Bull. Soc. Chim. Fr. 1964, 836; Addison, Sutton, J. Chem. Soc. 1964, 5553. Toxicity study: G. J. A. Speijers et al., Food Chem. Toxicol. 20, 311 (1982). Review of toxicology: B. Venugopal, T. D. Luckey, Environ. Qual. Safety Suppl. 1, 4-73 (1975). Review: de Bie, Doyen, Cobalt 15, 3-13; 16, 3-15 (1962).
Properties: Pale red powder. Dec at 100-105°. d 2.49. Sol in water. LD in rabbits (mg/kg): 250 orally, 75 s.c. (Venugopal, Luckey).
Density: d 2.49
Toxicity data: LD in rabbits (mg/kg): 250 orally, 75 s.c. (Venugopal, Luckey)
 
Derivative Type: Hexahydrate
CAS Registry Number: 10026-22-9
Properties: Red, deliquesc, monoclinic crystals. mp ~55°. Red liq becomes green and dec to the oxide above 74°. d 1.88. Very sol in water, alcohol, most organic solvents. Keep well closed in a cool place. LD50 orally in rats: 691 mg/kg (Speijers).
Melting point: mp ~55°
Density: d 1.88
Toxicity data: LD50 orally in rats: 691 mg/kg (Speijers)
 
Use: Manuf of cobalt pigments and invisible inks; decorating stoneware and porcelain; prepn of catalysts; production of vitamin B12 supplements.

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