0.10 M KNO3 Compare the solubility of silver phosphate in each of the following . The precipitates' solubility sequence is HgS < CuS < CdS < PbS < ZnS < NiS. The effects of nickel on hepatic glutathione and the enzymes glutathione reductase, glutathione-peroxidase, glutathione-S-transferase, and gamma-glutamyl-transpeptidase were investigated in female albino rats.Three groups of rats were sacrificed 16, 24, or 72 hr after a subcutaneous injection of nickel as nickel chloride at a level of 200 micromol/kg. ChemTeam: Calculating the Ksp from gram per 100 mL solubility Many of these compounds are reducing agents and therefore react vigorously with oxidizing agents, including inorganic oxoacids, organic peroxides and epoxides. (1) Nickel sulfide minerals such as pentlandite can, in general, be separated from their gangue by flotation using a thiol group of collectors like xanthates and alkyl dithiophosphates in the presence of a variety of activators, depressants, and dispersants. If nickel is present it must be precipitated with sulfide as the metallic sulfide ion. Water-soluble nickel compounds include nickel chloride (642 gI at 20 0 C) and nickel sulfate (293 g/l at 20 0 C), while nickel mon~sul- fide (3.6 mgl at 180 C) and nickel carbonate (93 mg/l at 25 0 C) are classed as insolu- Nickel carbonate has a water solubility of 90 mg/L, whereas different nickel compounds, reminiscent of nickel oxide, nickel sulphide and nickel tetra carbonyl are water insoluble. CAS No: 12035-51-7. Additional discus-sion of sulfide equilibria may be found in References 7 and 9. Ionic Compound Formula K sp. References 1. Nickel sul-fide occurs in three forms (α, β, and amorphous) as dark-green to black crystals or powder. Selected Solubility Products and Formation Constants at 25 o C. Solubility Rules Although all compounds have a characteristic solubility in water at a given temperature, some families of compounds are more soluble than others and it is useful to know certain general rules of solubility. Abstract. More kinetic studies for cobalt and nickel reaction with sulfide to obtain the possible reaction rate expression. Nickel sulfide is an inorganic compound with the formula NiS. Nickel(II) sulfide 16812-54-7 wiki - GuideChem Nickel Sulfide - espimetals.com The soluble Ni (dark green in Fig. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Nickel disulfide occurs as black crystals or Inorganic sulfides, such as NICKEL SUBSULFIDE, are generally basic and therefore incompatible with acids. (6) Nickel carbonyl, a highly unstable form, is not found naturally and decomposes rapidly. Even at acidic pH, most heavy metal sulfides have . All sodium, potassium, and ammonium salts are soluble. Otherwise, the application of sulfide precipitation proves to be a relevant and promising technology with various merits over hydroxide precipitation, with higher selectivity for nickel removal, faster reaction rates, better dewatering properties of sludge, and lower solubility of precipitate . Most often, the solvent is a liquid, which can be a pure substance or a mixture. Silver carbonate . Insoluble in water. Size: Clear: Nickel (II) Sulfide quantity. The bulk of the NLbS2was prepared from metallic nickel and sulful, as outlined as follows: The metallic nickel was first dissolved in hydrochloric acid. Read "Nickel sulfide formation at low temperature: initial precipitates, solubility and transformation products, Environmental Chemistry" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Nickel sulfide formation at low temperature: initial ... Nickel complexation as an innovative approach for nickel ... The solubility of carbon in iron-nickel sulfide melts at 1673 K was studied in the entire range of compositions of the Fe-FeS-Ni3S2-Ni tetragon. Molecular Weight: 126.845. Is nickel II carbonate soluble in water? - SupportMyMoto Nickel Sulfide | 16812-54-7 It can react violently with iodine, hydrogen sulfide, or a mixture of barium oxide and air. . Solubility product constant ( Ksp) (or the solubility product) is the product of the molar concentrations of the constituent ions, each raised to the power of its stoichiometric coefficient in the equilibrium equation. Solubility Products of Selected Compounds | Salt Lake Metals Brian A.Korgel. In the environment, nickel is found primarily combined with oxygen or sulfur as oxides or sulfides. Most silver salts are insoluble, and most sulfides are insoluble, so it's safe to assume Ag2S is insoluble. CO. 3. Solubility product constants. Solventless Synthesis of Nickel Sulfide Nanorods and Triangular Nanoprisms. Unusual Fire and Explosion Hazards: When heated to decomposition, nickel sulfide may emit toxic fumes of oxides of sulfur. Given that many major nickel companies report annually on their sustainability performance, such as Eramet, Inco (now Vale Inco), WMC Resources (now BHP Billiton), Norilsk Nickel, there is data available to examine in detail the differences in the environmental costs of nickel sulfide versus laterite. Solubility is the property of a solid, liquid, or gaseous chemical substance called solute to dissolve in a solid, liquid, or gaseous solvent to form a solution of the solute in the solvent. For other quantities or purities, please request a quotation. Nickel sulfides are insoluble in water, and some occur in more than one form. Nickel subsulfide (CAS # 12035-72-2) was evaluated for repeated-dose inhalation toxicity in B6C3F1 mice (5/sex/group) administered daily whole-body exposures to target aerosol (MMAD 2.4 um) concentrations of 0, 0.15, 0.3, 0.6, 1.2, and 2.5 mg/cu m in air, 6 hours/day on 5 days per week for 13 weeks. The formation of nickel sulfides has been examined experimentally over the temperature range from 25 to 60°C. Testing sulfide ion | Qualitative Analysis of S. 2-. ion. It has a maximum soluble rate of 47% at eutectic temperature, which then decreases to approximately 30% at room temperature. Solubility Solubility is the property of a solid, liquid, or gaseous chemical substance called solute to dissolve in a solid, liquid, or gaseous solvent. Chromium does not form insoluble sulfide precipitates and must be precipitated as the hydroxide at 7.0 - 8.0. Solubility in water, . At all conditions studied, hexagonal (α-NiS) was the initial precipitate from solution containing Ni2+ and dissolved sulfide. All nitrates, acetates and perchlorates are soluble. Nickel subsulfide (α form) occurs as lustrous pale-yellowish or bronze crystals that are soluble in nitric acid. However, other soluble nickel salts, such as nickel chloride, nickel acetate, nickel nitrate, nickel tetrafluoroborate, and the like, can also be employed. Avoid adding any acid to a solution containing sulfide salts. 2. The initial step in this process is to prepare a sodium sulfide solution. Nickel-tungsten sulfide catalysts for the hydrogenation of aromatic hydrocarbons have been prepared by the in situ decomposition of an oil-soluble tungsten hexacarbonyl precursor in a hydrocarbon feedstock using oil-soluble nickel salt nickel(II) 2-ethylhexanoate as a source of nickel. However, the sulfur is as nickel sulfide NiS and . 0.1M sodium sulfide (Na2S) 50mL beaker magnetic stirrer with stirring bar Safety: Sulfide salts, their solutions and hydrogen sulfide gas, which smells like rotten eggs at low concentration and is produced by reaction of sulfides with acids, are all poisonous. Nickel sulfide is used as a semiconductor material. . Nickel chloride is most water soluble; 553 g/L at 20 o C, to 880 g/L at 99.9 o C. Nickel carbonate has a water solubility of 90 mg/L, whereas other nickel compounds, such as nickel oxide, nickel sulphide and nickel tetra carbonyl are water insoluble. Most metal sulfate compounds are readily soluble in water for uses such as water treatment, unlike fluorides and oxides which tend to be insoluble. 4. 2004, 4, (4),537-542. Silver chloride AgCl 1.8 × 10-10. . 5.5 × 10-5. Answer: You look at the ions, Ag+ and S2-, and find them in the Solubility Rules. The present invention belongs to the field of wet treating process of nickel sulfide material, and is especially wet process of preparing nickel sulfamate with concentrated nickel sulfide ore. 2. All prices are subject to change. γ-Nickel (II) sulfide is a black powder. Freshly precipitated nickel sulfide possesses significant residual Ni-O coordination as revealed by X-ray absorption spectroscopy. Aluminum hydroxide Al(OH) 3 1.8×10 -5 Aluminum phosphate AlPO 4 6.3×10 -19 Barium carbonate BaCO 3 5.1×10 -9 Barium chromate BaCrO 4 1.2×10 -10 Barium fluoride BaF 2 1.0×10 -6 Barium hydroxide Ba(OH) 2 5×10 -3 Barium sulfate BaSO 4 1.1×10 -10 Barium sulfite BaSO 3 8×10 -7 Barium thiosulfate BaS 2 O 3 . For ionic compounds with limited solubility in water, an equilibrium constant, Ksp, can be defined from the ion concentration in water from the equation: MmAn(s) = mMn+(aq) + nAm-(aq) where M m A n is the slightly soluble substance and M n+ and A m- are the ions produced in solution by dissosiation of M m A n. Most nickel is produced from the sulfide ores, and the two largest producers, Canada and the Russian Federation, account for 20-25% each of total annual production, which was 784.82 thousand tonnes in 1988 (5). More information about Nickel(II) sulfide (NiS). Nickel may be found in slate, sandstone, clay minerals and basalt. All carbonates, sulfides, […] Applications. Anodes in nickel plating must be soluble into the bath. Solubility Product Constants near 25 °C. Nickel carbonate is soluble in dilute acids and ammonia, and insoluble in hot water. Effects of Exposure: Nickel is a confirmed carcinogen with experimental carcinogenic, neoplastigenic, tumorigenic and teratogenic data. Molecular Formula: H 4 NIS 2. ent solubility product K spa based on the reaction +M m S n (s) + 2H +mM + nH 2 S (aq) Values of K spa, taken from Reference 8, are given for several sulfides in the auxiliary table following the main table. Solubility Rules: Greater than 0.1 mole/Liter = Soluble Between 0.1 and 0.01 mole/Liter = Slightly Soluble Less than 0.01 mole/Liter = Insoluble 1. 3. One may also speak of solid solution, but rarely of solution in a gas. For instance, if a compound A a B b is in equilibrium with its solution. Most chlorides, bromides and iodides are soluble, except Silver and Mercury. Approximately 40,000 tonnes were produced in 2005. It can react violently with iodine, hydrogen sulfide, or a mixture of barium oxide and air. Insoluble. 1.3 Use of the agents . 0.10 M (NH4)2S Similar solubility as in pure water 0.10 M NH CH3C00 Less soluble than in pure water. Nickel chloride is most water soluble; 553 g/L at 20oC, to 880 g/L at 99.9oC. ( b ) Consider the sulfide precipitation reaction below, where soluble nickel is precipitated using sodium sulfide (Na 2 S). Names and Identifiers Properties Safety and Handling Computational chemical data 15 Suppliers. Some of them are dissolving in water , forms precipitates and have colours. properties for nickel and nickel compounds, including solubility data, were presented in the previous IARC Monograph (IARC, 1990), and have been reported elsewhere (ATSDR, 2005). The formation of nickel sulfides has been examined experimentally over the temperature range from 25 to 60°C. In the environment, nickel is found primarily combined with oxygen or sulfur as oxides or sulfides. Chemsrc provides Nickel(II) Sulfide(CAS#:16812-54-7) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Nickel acetate is soluble in acetic acid and water, and insoluble in alcohol. Nickel (II) sulfide* NiS 3.0 × 10-20. Practically, you put the compound in water until it is saturated. is Nickel II hydroxide soluble in water? Nickel sulfide ores associated with komatiites in Archean greenstone belts are the most important examples of mag- matic mineralization in volcanic rocks. NiSO4 ( Nickel (II) sulfate ) is Soluble in water. 12035-51-7) SDS. Articles of Nickel(II) Sulfide are included as well. At all conditions studied, hexagonal (α-NiS) was the initial precipitate from solution containing Ni2+ and dissolved sulfide. It is mainly used for electroplating of nickel.. Lines of carbon isosolubility are plotted in the tetragon field outside the stratification area. Once saturated, we'd titrate the amount . Silver bromate . 1a) was higher than the soluble Co (dark red in Fig. If you want to quickly find the word you want to search, use Ctrl + F, then type the word you want to search. You can also browse global suppliers,vendor,prices,Price,manufacturers of NICKEL SULFIDE(16812-54-7). There are two commercial classes of nickel ore, the sulfide ores (pentlandite and pyrrhotite) and the silicate-oxide. NICKEL SULFIDE (CAS No. (1) We can offer items in bulk or custom. inorganic chemistry, Solubility of inorganic compounds All Metal sulfides dissolve in dilute acids and produce hydrogen sulfide gas and metal salt.. CuS + HCl → CuCl 2 + H 2 S. As an example, copper sulfide (CuS) is a black precipitate and dissolve in dilute HCl acid and form blue color CuCl 2 solution. 3. Again, equations are simplified by showing metals in their uncomplexed state. The in situ synthesized Ni-W-S catalyst has been characterized by X-ray photoelectron spectroscopy. The formation of nickel sulfides has been examined experimentally over the temperature range from 25 to 60 degrees C. At all conditions studied, hexagonal (alpha-NiS) was the initial precipitate . the nickel sulfide thin films were prepared by spray pyrolysis technique on a glass substrate at various deposition temperatures of 523, 573 and 623 K. The structural, at 523, 573 and 623 K having an Sulfide ion forms compounds with cations. Although the sulfide precipitation studies conducted at Boeing were at pH 8 to 9, the sulfide precipitation of heavy metals is highly effective even at lower pH values. The process includes the following steps: pressure leaching the material with nitric acid; neutralizing and purifying with ammonium carbonate or ammonia water to eliminate Fe, Mn, Zn and other impurities . See also How to Use Vega 100mg, Side Effects, Price, Warnings. The oxide is obtained from nickel ores by a series of treatments including concentration, roasting and smelting. The formation of millerite (β- NiS, rhombohedral) was not detected in any of the synthesis experiments. The formation of nickel sulfides has been examined experimentally over the temperature range from 25 to 60°C. Nickel sulfide (NiS) is the solid precipitate formed from this reaction. AgBrO. At all conditions studied, hexagonal (α-NiS) was the initial precipitate from solution containing Ni 2+ and dissolved sulfide. The concentration of the nickel salt, e.g., nickel sulfate, in the aqueous treating solution can vary and can range from about 0.05 to about 2, preferably about 0.1 to about 1, molar. Add to cart Request a Quote. Answer (1 of 2): In 1899 Ludwig Mond developed a process for extracting and purifying nickel. It is poorly soluble in dilute hydrochloric acid. Nickel-tungsten sulfide catalysts for the hydrogenation of aromatic hydrocarbons have been prepared by the in situ decomposition of an oil-soluble tungsten hexacarbonyl precursor in a hydrocarbon feedstock using oil-soluble nickel salt nickel(II) 2-ethylhexanoate as a source of nickel. Solution: Convert to grams per 1000 mL, then moles per liter: 2.97 x 10¯ 10 grams / 100mL x (10/10) = 2.97 x 10¯ 9 grams / 1000mL 2.97 x 10¯ 9 grams / L divided by 90.77 g/mol = 3.27 x 10¯ 11 mol/L When NiS dissolves, it dissociates like this: . Nickel sulfide is an inorganic compound with the formula NiS. The in situ synthesized Ni-W-S catalyst has been characterized by X-ray photoelectron spectroscopy. Recommendations Recommended topics for further studies based on this research are as follows: 1. Nickel acetate decomposes before it melts, forming nickel oxide and emitting irritating fumes. Concen- GHS Hazard and Precautionary Statements. Silver bromide AgBr 5.0 × 10-13. Most metal sulfate compounds are readily soluble in water for uses such as water treatment, unlike fluorides and oxides which tend to be insoluble. (1) Each form of nickel exhibits different physical properties. They contain about 25 percent of the world total identified nickel resource in deposits with ≥0.8 percent Ni, as well as significant amounts of copper and platinum-group elements (PGE). 3. Nickel (II) Sulfide - 25 gm $ 200.00. These alloys have superior resistance to high-temperature corrosion and oxidation, and optimal wear resistance. These nickel particles are removed by macrophages in the digestive tract. It is a black solid that is produced by treating nickel(II) salts with hydrogen sulfide.Many nickel sulfides are known, including the mineral millerite, which also has the formula NiS.Aside from being useful ores, nickel sulfides are the products of desulfurization reactions, and are sometimes used as catalysts. 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