Ferrous nitrate

Eisenoxydul, n. ferrous oxide, iron(ll) oxide. — salpetersaures —, ferrous nitrate, iron(ll) nitrate (and so for other salts). 

Additional Exercises Ferrous nitrate, Fe(N03)2-6H20 (difficult), Fink, Z. anorg. Chem.., 20, 404 (1899). 

Ferrous nitrate hexahydrate (60 mg) followed by sodium (4.5 g, 0.196 g-atom) were added to liquid ammonia. To this mixture was added a solution of 3-methylpyridine (10.0 g, 0.093 mole) in N,N-dimethylaniline (21 ml) over a period of 5 min. The ammonia was allowed to evaporate and the residue heated under nitrogen by means of an oil bath maintained at 180°C for 18 h. The cooled residue was treated with ice (50 g) followed by 2 N sodium hydroxide (50 ml). The mixture was triturated for 2 h and then filtered. The collected solid was washed with boiling toluene (2 times 100 ml). The toluene layer was separated from the combined filtrate and washings, concentrated to about 50 ml and extracted with 5% aqueous acetic acid (5 times 20 ml). The combined extracts were filtered and reduced to dryness. The residue was recrystallized from methylcyclohexane to give 2-amino-3-methylpyridine acetate (4.9 g, 29%), melting point 85°-95°C. The acetate (2.5 g, 1.37 mmoles) was briefly suspended in 1 N sodium hydroxide (50 ml). The mixture was extracted with methylene chloride. The extract was washed with water, dried, and concentrated to give 2-amino-3-methylpyridine as an oil. 

Like the arsenite-iodate reaction, chlorite-iodide is a clock reaction50,51 however, it is more complex. This reaction shows a dramatic rise in the intensity of the brown color of iodine, followed by an even more abrupt fade-out. This behavior resembles that of the ferrous-nitrate clock, where the color is due to formation of the FeNOz+ complex52. ... 

In the case of the very dilute acid of density less than 1 034, solution is not accompanied by evolution of gas, but with the formation of ferrous nitrate and ammonium nitrate.2 If acid of density ranging from 1 034 upwards to 1 115 be employed, the resulting solution consists of a mixture of ferrous nitrate and ferric nitrate, the proportion of the latter increasing with the density of the acid. With acid of greater density than 1 115, ferric nitrate is the main product, and acid of density 1 33 is therefore recommended for the preparation of this salt.2... 

Ferrous nitrate may also be obtained in solution by grinding lead nitrate with an equivalent quantity of ferrous sulphate in the presence of dilute alcohol, double decomposition takes place, the ferrous nitrate passing into solution. Upon evaporation at room temperature the salt... 

The solubility of ferrous nitrate in water at various temperatures is given as follows —2... 

With more dilute acid ferrous nitrate is apt to be formedL. See p. 175. 

Iron and Nitrogen—Nitndes of Iron—Nitro-iron—Ferrous Nitrate—Feme Nitrate. 

Green rhombohedral crystals of iron(II) nitrate hexahy-drate, Fe(N03)2-6H20 (ferrous nitrate), with a melting point 60.5 °C, are obtained from solutions made by dissolving iron in dilute nitric acid. With more concentrated acid, oxidation takes place, and monoclinic pale violet iron(III) nitrate non-ahydrate, Fe(N03 )s -91120 (ferric nitrate), melting point 47 °C, may be crystallized. A colorless hexahydrate can also separate as cubic crystals. Various basic iron(in) nitrates have been described. The eight-coordinate iron(in) anion [Fe(N03)4] has an essentially dodecahedral symmetry with four almost symmetrical bidentate nitrate groups. ... 

For a limited number of salt-water systems, the rate of Ph2o increase exceeds the rate of vapor release from channels and this promotes melting of the product even with a moderate heat supply. This is rather typical for amorphous systems without a distinct crystalline salt framework, as in the case of frozen solutions of rare earth and ferrous nitrates. 

Hydrazine (N2H ) was found to be an effective scavenger of N02 ions and thus a promising holding reductant. Production scale tests at Hanford in 1968 with hydrazine-stabilized ferrous nitrate were plagued by problems associated with the carryover of nitrite, though the soundness of this method was demonstrated (3). 3+... 

Recovery of Pu-238 from the strongly radiolized solvent mentioned above was performed (J5) by repeated treatment with an aqueous solution containing 0/1 to 0/2 moles/1 ferrous nitrate/ 0,2 moles/1 hydrazine nitrate/ and 0/2 moles/1 nitric acid/ followed by a final wash with 0/1 moles/1 uranium(IV) nitrate, 0/2 moles/1 hydrazine nitrate, and 0,5 moles/1 nitric acid which was the most effective. Pu-238 was recovered and further purified from the combined wash solutions by anion exchange ( ). ... 

Ferrous Nitrate Ferrous Sultate Fluoboric Acid Fluorine Fluoslllcic Acid... 

Ferric Hydroxide Ferric Nitrate Ferric Sulfate Ferric Sulfide Ferrous Chloride Ferrous Hydroxide Ferrous Nitrate Ferrous Sulfate Fluoboric Acid... 

Ferrous Nitrate Ferrous Sulfate Fluorine Flushing OH Formaldehyde Formic Acid... 

Nitrates.—Ferrous Nitrate—Fe(NOs)j—179.9—a greenish, un-istable salt, formed by doable decomposition between barium nitrate and ferrous sulfate or by the action of HNOi on FeS. 

---