Nickel(II) nitrate hexahydrate Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R45:Kann Krebs erzeugen.
R8:Feuergefahr bei Berührung mit brennbaren Stoffen.
R22:Gesundheitssch?dlich beim Verschlucken.
R43:Sensibilisierung durch Hautkontakt m?glich.
R40:Verdacht auf krebserzeugende Wirkung.
S-S?tze Betriebsanweisung:
S53:Exposition vermeiden - vor Gebrauch besondere Anweisungen einholen.
S17:Von brennbaren Stoffen fernhalten.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
Beschreibung
Nickel (II) nitrate hexahydrate appears as green crystals and substantially soluble in water.
It is stable, a strong oxidiser, and incompatible with reducing agents. It has wide industrial
applications in nickel plating as catalysts and is indirectly associated with other industries
of nickel alloy manufacturers, nickel miners, smelters and refiners, nickel platers, and
exposure to alloys, for example, in coinage.
Chemische Eigenschaften
Green crystal
Verwenden
Nickel plating, manufacturing of ceramic colorsNickel(II) nitrate hexahydrate is used as a precursor in the manufacturing of other nickel salts and supported nickel catalysts. It finds use as a catalyst in organic synthesis. Further it is used in electroplating and as a mordent in textile dyeing. It is a precursor for preparing nickel sulfide-reduced graphene oxide (RGO) composite powders with high initial capacities and good cycling performance. It can be employed in the preparation of nickel and nickel oxide nanocrystals impregnated O-MWCNTs (oxygen-functionalized multi-walled carbon nanotubes) with potential applications in semiconductor industries. It finds use in improving cycling stability ad rate capability of Li2MnO3.
synthetische
Emerald green crystals of the hexahydrate Ni(N03)2?6H20 crystallize
from aqueous solutions at room temperature. These are isomorphous with the corresponding
cobalt(II) salt containing the regular octahedral [Ni(H20)6]2+ ions with Ni-O distances = 2.03 A. The tetrahydrate crystallize above 54° and the dihydrate above 85.4°.
The pale green anhydrous nitrate can be obtained by dehydration of the hydrate with
dinitrogen pentoxide in fuming nitric acid or by the liquid phase reaction of dinitrogen
tetroxide with nickel carbonyl [the gas phase reaction gives the nitrite Ni(N02)2]
Ni(CO)4+2N2O4 -* Ni(N03)2+2NO+4CO
The first product of this latter rather violent reaction is the adduct Ni(NO3)2N2O4 from
which the nitrogen tetroxide is removed by heating in vacuo. It can also be prepared by the
reaction of dinitrogen tetroxide-ethyl acetate mixtures with nickel(II) chloride. The infrared
spectrum shows it to be a typical covalent nitrate. It is involatile and decomposes upon
heating in nitrogen to give the nitrite Ni(NO2)2 above 260°.
Allgemeine Beschreibung
Nickel(II) nitrate hexahydrate (Ni(NO
3)
2.6H
2O) is a hydrated nickel(II) salt. Its thermal degradation has been investigated by thermogravimetric methods under quasi-isothermal conditions.
Sicherheitsprofil
Confirmed carcinogen.
Moderately toxic by ingestion. When heated
to decomposition it emits toxic fumes of
NOx. See also NICKEL(II) NITRATE.
l?uterung methode
Crystallise it from water (3.3g/mL) by partial evaporation in a desiccator. Store it in a desiccator as it is deliquescent.
Nickel(II) nitrate hexahydrate Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
