Nickel hexahydrate

Nickel hexahydrate 8.5 mg/kg BW daily for 91 days Death preceded by lethargy, ataxia, irregular breathing, hypothermia, salivation, squinting, and loose stools 6... 

ROS] Rossetti-Fran9ois, J., Etude du carbonate de nickel hexahydrate, C. R. Hebd. Seances Acad. Sci., 234, (1952), 840-843, in French. Cited on pages 218,277,310,438. 

Forms hexahydrate. nickel nitrate, Ni(N03)2,6H20. Green... 

Nickel forms yellow anhydrous halides NiXjlX = F. Cl. Br) and a black iodide Nil2 all these halides are made by direct combination of the elements, and the chloride by reaction of sulphur dichloride oxide with the hydrated salt. All dissolve in water to give green solutions from which the hydrates can be crystallised the solutions contain the ion [NifHjOls], and the chloride crystallises as NiCl2.6H2O, nickel(II) chloride hexahydrate. 

Properties. Nickel sulfate hexahydrate [10101 -97-0], NiSo 6H20 is a monoclinic emerald-green crystalline salt that dissolves easily in water and in ethanol. When heated, it loses water and above 800°C decomposes into nickel oxide and SO3. Its density is 2.03 g/cm. ... 

Nickel chloride hexahydrate [7791-20-0] is formed by the reaction of nickel powder or nickel oxide with a hot mixture of water and HCl. Nickel duoride [13940-83-5], 4H2O, is prepared by the reaction of hydroduoric acid on nickel carbonate. Nickel bromide [18721 -96-5], NiBr2 6H20, is made... 

Cobalt(II) nitrate hexahydrate [10026-22-9], Co(N02)2 6H20, is a dark reddish to reddish brown, monoclinic crystalline material containing about 20% cobalt. It has a high solubiUty in water and solutions containing 14 or 15% cobalt are commonly used in commerce. Cobalt nitrate can be prepared by dissolution of the simple oxide or carbonate in nitric acid, but more often it is produced by direct oxidation of the metal with nitric acid. Dissolution of cobalt(III) and mixed valence oxides in nitric acid occurs in the presence of formic acid (5). The ttihydrate forms at 55°C from a melt of the hexahydrate. The nitrate is used in electronics as an additive in nickel—ca dmium batteries (qv), in ceramics (qv), and in the production of vitamin B 2 [68-19-9] (see Vitamins, VITAMIN B22)-... 

The most common plafing bath uses fluoride to complex the fin. A typical solution contains 45 g/L staimous chloride, 300 g/L nickel chloride hexahydrate, and 55 g/L ammonium bifluofide. It is operated at pH 2.0—2.5 usiag ammonium hydroxide temperature is 65—75°C and current about 200 A/m. The bath has excellent throwing power. Air agitation is avoided. The deposit is bright without additives. Anodes are cast nickel, and the fin is replenished by additions of staimous chloride. AHoy anodes of 72% fin have been used to a much lesser extent. Tia-nickel deposits are covered by ASTM (136) and ISO (137) specifications. One other bath based on pyrophosphate has appeared ia the Hterature, but does not seem to be ia commercial use. 

It has been frequently noted that certain lots of iron filings are not satisfactory for the reduction of heptaldehyde to heptyl alcohol in acetic acid solution. E. E. Reld and J. R. Ruhoff have found that the addition of a solution of 20 g. of nickel cliloride hexahydrate in 50 cc. of water immediately after the addition of the aldehyde will cause the reaction to start at once and wiU greatly accelerate the rate of reaction so that it is complete in two hours instead of the usual six to seven hours. The checkers have found this to be the case even with a lot of iron which could not be made to react when reduced in hydrogen. It is also recommended that the reaction mixture be divided between two 12-I. flasks and that 3 1. of water be added to each half immediately at the end of the reaction. This prevents the mixture from setting to a hard mass in case the steam distillation is not carried out at once, and also reduces the amount of foaming. 

Determine the correct chemical formulas of potassium permanganate, dinitrogen tetroxide, nickel(II) chloride hexahydrate, sodium hydrogen phosphate, and iron(Itl) oxide. 

Nickel(II) chloride hexahydrate Nickel(II) is, and chloride is Cl". To achieve electrical neutrality, there must be two Cl and one. Hexa indicates six water molecules ... 

What mass of nickel(II) chloride hexahydrate is required to prepare 250. mL of aqueous solution whose concentration is 0.255 M ... 

Begin by finding the chemical formula from the name, nickel(II) chloride hexahydrate. Chloride ion carries -1 charge, and the (II) indicates that nickel is a +2 cation. Electrical neutrality requires two chlorides for every nickel. The name also tells us that the salt contains six water molecules for each unit of nickel(II) chloride. Thus, each formula unit of the salt contains one cation, two Cl anions,... 

C03-0033. Caicuiate the moiarities of the ions present in the soiution of nickel(II) chloride hexahydrate prepared in Exampie. ... 

C03-0112. Nickel sulfate hexahydrate is NiSOq 6 H2 O. (a) Compute its molar mass, (b) Compute the number of moles contained in 25.0 g of this compound, (c) Determine its percent composition, (d) Determine the mass of this compound that contains 1.00 mol of O. 

Zebradanio, Brachydanio rerio exposed from 2 h after fertilization through hatching and larval stages until day 16 11 different doses as nickel sulfate hexahydrate ... 

Embryos age 4 or 8 days white leghorn strain injected into yolk or onto the chorioallantoic membrane 3.6 mg Ni/kg FW embryo (0.2 mg nickel as nickel chloride hexahydrate/egg) LD50 (18 days postinjection) no developmental abnormalities in survivors 8 ... 

Dermal application of nickel sulfate hexahydrate causes skin and testicular damage. 

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