Zinc nitrate

Unless otherwise noted, densities are given in grams per cubic centimeter. To convert to pounds per cubic foot, multiply by 62.43. 

From International Critical Tables, vol. 3, pp. 115—129 unless otherwise stated. All compositions are in weight percent in vacuo. All density values are dl = g/mL in vacuo. 

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Chemical Designations - Synonyms Zinc nitrate hexahydrate Chemical Formula Zn(N03)2 6Hj0. Observable Characteristics - Physical State (as normally shipped) Solid Color White colorless Odor None. 

Zink-oxydnitrat, n. zinc nitrate, -pecherz, n. sphalerite. -pol wi. zinc pole, cathode, -pulver, n. zinc powder, -raffinerie, /. zinc refinery, -rauch, m. zinc fume, -salbe, /. zinc ointment, -salz, n. zinc salt. 

The presence of nitrate as acelerator has a pronounced effect on the amount and composition of gas evolved from the work being treated (Table 15.8). It will be observed that hydrogen evolution drops to a very low figure with the zinc/nitrate baths. The formation of nitrite arises from decomposition of nitrate by reaction with primary ferrous phosphate to form ferric phosphate ... 

The simplest method of chromate sealing involves immersion in a dilute alkali chromate or dichromate solution followed by washing retained chromate imparts a yellow colour to the film. More substantial amounts of slightly soluble chromate can be deposited in the thicker type of absorbent anodic film by a method developed by Dr. L. Whitby at High Duty Alloys Ltd. In this, anodised parts are immersed first in a boiling 30% solution of sodium chromate and then in a boiling 2% solution of zinc nitrate. Residues of the first solution in the film react with the second solution to give a substantial yellow deposit of a basic zinc chromate, probably similar in composition to zinc yellow. 

The US Dept of. Defense Spec for Zinc Nitrate, Reagent is MIL-Z-11143 (10 May 1951), and specifies the following chemical requirements ... 

If powdered carbon is thrown on zinc nitrate when it is hot, detonation can take place. 

Nicodemus obtained mixtures of ethylamines on passing mixtures of NH3 and acetylene at 280-290°C over zinc chloride on pumice [232, 233] or at 350°C over a mixture of zinc nitrate, tin chloride, siUca and charcoal on diatomaceous earth (Eq. 4.56) [234]. 

M sodium chloride (NaCI) 0.2M sodium sulfate (Na2S04) 0.2M sodium sulfite (Na2S03) 0.2M lead(ll) nitrate (Pb(N03)2) 0.2M zinc nitrate (Zn(N03)2) test tubes (10) test-tube racks (2) thermometer 10-mL graduated cylinder... 

Iron(lll) chloride and zinc nitrate are tissue irritants and are slightly toxic. 

Pour 3 mL of 0.2M zinc nitrate into a clean test tube. Slowly add 3 mL of 0.2M copper(II) sulfate. 

Zinc nitrate is a severe body tissue irritant. 

The X-ray structure of the unsubstituted tris(pyrazolyl)borato zinc nitrate has been solved showing a unidentate coordination mode for nitrate, in contrast with the t-butyl substituted ligand, which shows anisobidentate nitrate coordination due to the steric effects.232 A partial explanation of the reduced activity of cadmium-substituted carbonic anhydrase is offered by Parkin on the basis of the comparison of nitrate coordination to cadmium and zinc trispyrazo-lylborate moieties. A contributing factor may be the bidentate coordination supported by the cadmium that does not allow the facile access to a unidentate bicarbonate intermediate, which could be highly important to carbonic anhydrase activity.233... 

EXAFS has been used to determine the second hydration shell of zinc in aqueous solution. Aqueous solutions of zinc nitrate over a range of concentrations were examined and a Zn—O distance of 2.05 A for the first shell of the six-coordinate zinc center found, which is unaffected by concentration. The second hydration shell shows a Zn—O distance which has no systematic trend but an average distance of 4.1 A. The coordination number for the second shell is 11.6 1.6 with unusual behavior for the most concentrated 2.7 M solution, which has a decrease in coordination number to 6.8 1.5 340... 

A range of zinc phosphonates were prepared and structurally characterized by reaction of zinc nitrate with phosphonic acids in an autoclave in the presence of sodium hydroxide, including an enantiomerically pure zinc phosphonate—for example, Zn(03PCH2P(0)(C6H5)2) and Zn(0 3PCH2P(0)(CH 3)(C6H 5)). 40, 4°6... 

Attempts have been made to incorporate functional groups into the phosphonates in zinc phosphonate structures. Zn(03P(CH2)2C02H) H20 was reacted with aromatic amines but no amide formation was observed. However, Zn(03P(CH2)2C0NHC6H5) could be synthesized directly from zinc nitrate, (2-carboxyethyl)phosphonic acid, and aniline in a one-step procedure.406... 

There has been particular recent interest in zinc nitrate complexes as coordination models for bicarbonate binding in carbonic anhydrase. The mono- or bidentate coordination modes have been studied with tris-pyrazolyl borate complexes and can be rationalized in the context of the enzyme activity.433 Caution in this comparison is introduced by ab initio calculations on these model systems demonstrating both monodentate and bidentate coordination energy minima for nitrate binding to zinc 434... 

The zinc nitrate complexes of pyridyl functionalized 12[ane]N3 ligands l-(2-pyridylmethyl) -1,5,9-triazacyclododecane and l-(2-pyridyl-2 -ethyl)-l,5,9-triazacyclododecane were formed. 13C NMR studies were used to determine conformation in solution suggesting the former gave a trigonal bipyramidal isomer in solution with a water bound and the latter gave a 2 1 mixture of tetrahedral and asymmetric trigonal bipyramidal isomers. The crystal structure of the zinc complex of l-(2-pyridyl-2 -ethyl)-1,5,9-triazacyclododecane reveals a tetrahedral geometry in the solid state.679... 

A more soluble derivative of compound 11.17, the tetrasulphonated analogue 11.18, has been recommended for application to cotton in combination with a resin finish. Unlike DAST-type FBAs under these conditions, compound 11.18 is compatible with resin formulations containing zinc nitrate as latent acid catalyst. The brightness achieved is not high, however. 

In the analysis of diethylzinc, a 1 ml sample is cooled to — 196°C and treated with 2 ml of ethanol to give the ethoxide. During subsequent conversion to zinc nitrate (prior to pyrolysis to the oxide) by treatment with 3 ml of 30% nitric acid, cooling must be continued to avoid an explosion hazard. 

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