Copper Nitrate

Copper Nitrate

 

(cupric nitrate), Cu(NO3)2; white (slightly green) crystals, which upon heating break down into CuO, NO2, and O2. Anhydrous Cu(NO3)2 can be obtained from its concentrated nitric-acid solutions. The form most often isolated from aqueous solutions is Cu(NO3)2 · 6H2O—dark blue crystals with a density of 2.07 g/cm3, which deliquesce upon exposure to air. Cu(NO3)2 · 3H2O, which forms blue crystals, is more stable at ordinary temperatures. Copper nitrate is readily soluble in water and alcohol (125.2 g anhydrous salt per 100 g H2O at 20°C) and is used in the preparation of dyes. Copper (I) nitrate can only exist in solutions, since it has not been isolated in free form.

References in periodicals archive ?
Copper nitrate Trihydrate [((CuN[O.sub.3]).sub.2] x 3[H.sub.2]O) as a precursor, sodium hydroxide (NaOH), and hexamethylene tetramine (HMT) were used from AnalaR (England).Double dionized water were used throughout experiment.
In the second week the amount of the copper nitrate salt was increased to 1x10-4 molar but samples revealed no difference.
Copper nitrate and sodium thiosulphate are used as copper and sulfur sources with CTAB as surfactant at 150[degrees]C for 5 and 24hrs, respectively.
The primary phases in the Zn-[Cu.sub.50:50] sample were best identified to be zinc hydroxide chloride hydrate, [Zn.sub.5][(OH).sub.8][Cl.sub.2] x [H.sub.2]O (PDF File # 00- 007-0155), and copper nitrate hydroxide, [Cu.sub.2](N[O.sub.3])[(OH).sub.3] (PDF File # 99-000-1329).
Silver nitrate, AgN[O.sub.3] and copper nitrate, Cu[(N[O.sub.3]).sub.2] (fy Mach chem., CZ) with the purity of 99.99 % were used as sources of silver and copper.
Noting that zirconium alkoxide and copper nitrate were used as precursors, Vahidshad reiterated, "We first examined the parameters influencing the mentioned nanoparticles synthesis such as solution pH, molar ratio of water to alkoxide, solution quantity, ageing temperature and calcination temperature and achieved optimum conditions for the desired nanoparticles synthesis.
Metallic copper was used either in the form of a copper screen (Church and Joshi, 1951), or as a powder prepared by decomposition of copper nitrate (Iwasa and Takezawa, 1991) or precipitated as a copper hydroxide (Chung et al., 1993), which was then calcined and reduced in situ.
Rare secondary copper nitrate mineralization in the Great Australia deposit has its origin in a bizarre relationship involving termite activity.
The brain sections were rinsed with distilled [H.sub.2]O, placed into dishes containing the preimpregnating solution (silver nitrate [AgN[O.sub.3]], distilled [H.sub.2]O, D,L-alanine, copper nitrate [[Cu(N[O.sub.3]).sub.2]], cadmium nitrate [[Cd(N[O.sub.3]).sub.2]], lanthanum nitrate [[La(N[O.sub.3]).sub.2]], neutral red, pyridine triethanolamine, isopropanol), heated in a microwave oven (45-50[degrees]C) for 50 min, and cooled at room temperature for 3 hr.