Nitric acid solubility

Nitric acid Soluble No data No data No data... 

Cinnabar is a red crystalline or powdery substance hexagonal crystal system refractive index 2.854 density 8.10 g/cm sublimes at 583.5°C color changes to brown at 250°C and converts to black sulfide at 386°C reverts to red color on cooling insoluble in water, alcohol and nitric acid soluble in aqua regia and solutions of alkali metal sulfides decomposed by hot concentrated sulfuric acid. 

Colorless hexagonal crystal volatile solid density 1.642 g/cm at 18°C melts at 30°C decomposes at 47°C soluble in water forming nitric acid soluble in chloroform with some decomposition. 

Exists in two adotropic modifications. Crystalline sihcon is made up of grayish-black lustrous needle-hke crystals or octahedral platelets cubic structure Amorphous sdicon is a brown powder. Other physical properties are density 2.33g/cm3 at 25°C melts at 1,414°C high purity liquid silicon has density 2.533 g/cm at its melting point vaporizes at 3,265°C vapor pressure 0.76 torr at 2,067°C Mohs hardness 6.5. Brinell hardness 250 poor conductor of electricity dielectiric constant 13 critical temperature 4°C calculated critical pressure 530 atm magnetic susceptibility (containing 0.085%Fe) 0.13x10 insoluble in water dissolves in hydrofluoric acid or a mixture of hydrofluoric and nitric acids soluble in molten alkalies. 

Standing Committee of Analysts (DoE) (1979) The Analysis of Agricultural Materials -Cadmium, Nitric Acid Soluble in Soil Method 11, MAFF Technical Bulletin RB 427, HMSO, London, UK. 

Soluble in water with some decomposition forming fluoroboric and boric acids somewhat soluble in concentrated sulfuric acid and nitric acid soluble in benzene, dichlorobenzene, chloroform, carbon tetrachloride, and carbon disulfide.1,2... 

Precipitation reactions with ordinary reagents are not very characteristic. A neutral solution of molybdate gives with silver nitrate a white, curdy precipitate soluble in ammonia or nitric acid, and with barium chloride a white precipitate soluble in hydrochloric acid. Disodium hydrogen phosphate added to a solution of ammonium molybdate gives a yellow precipitate of ammonium 12-molybdophospliate (see p. 164) insoluble in nitric acid, soluble in ammonia. 

Properties Small, prismatic, yellow crystals. Soluble in water and alcohol almost insoluble in concentrated nitric acid soluble in other concentrated acids. 

Properties Steel-gray to black in anhydrous form. D 6.07 changes to cobaltous oxide at 900-950C. Insoluble in water, hydrochloric and nitric acids soluble in sulfuric acid and fused sodium hydroxide hygroscopic. 

CM17001 Light sandy soil - trace elements Certified values for 11 total, 12 aqua regia-soluble, 10 boiling (2 moll-1) nitric acid-soluble, and 11 cold (2 moll-1) nitric acid-soluble metals... 

PHYSICAL PROPERTIES soft, bluish-gray metal highly lustrous when freshly cut very malleable easily melted, cast, rolled, and extruded tarnishes upon exposure to moist air cubic crystal structure poor conductor of electricity good sound and vibration absorber dissolve in dilute nitric acid soluble in hot concentrated sulfuric acid, acetic acid, and alkali solutions dissolves slowly in hydrogen chloride insoluble in hot or cold water MP (327.4°C, 621.3°F) BP (1740°C, 3164°F) DN (11.32 g/cm at20°C) SG (11.3) VS (3.2 cP at 327.4°C, 2.32 cP at 400°C, 1.54 cP at 600°C) (molten lead) CP (0.031 cal/g at 20°C) HV (206 cal/g at 1,740°C) VP (1.77 mmHg at 1000°C) BHN (4.0)(high purity lead) hardness 1 on Mohs scale. 

PHYSICAL PROPERTIES yellowish-brown liquid or reddish-brown gas (above 70°F) in solid form (below 15°F) may appear as white to bluish-white snow pungent, irritating odor soluble in concentrated sulfuric acid and nitric acids soluble in alkalies, chloroform, and carbon disulfide commercial brown liquid under pressure is an equilibrium mixture of nitrogen dioxide and the colorless N2O4 MP (-9°C, 15°F) BP (21°C, 70°F) DN (1.448 g/mL liquid at 20°C) LSG (1.44 at 68°F) HV (9.110 kcal/mol) VD (1.58) VP (400 mmHg at 80 C) OT (4 ppm). 

The distributions of nitric acid and sulfuric acid between the two immiscible phases were also measured. When an acid containing 20 mole percent sulfuric acid and the remainder water was equilibrated at 28°C with nitrobenzene, the concentration of sulfuric acid in nitrobenzene was less than 0.1 weight percent. When an acid containing 20 mole percent nitric acid and the remainder water was equilibrated at 26°C with nitrobenzene, the concentration of nitric acid in the nitrobenzene phase was approximately 10 mole percent as shown in Figure 5. In making these measurements, the total acidity of the nitrobenzene phase was measured, and the nitric acid solubility was estimated by difference. It was assumed that the sulfuric acid concentration was in all cases 0.1 percent or less and based on that assumption nitric acid accounted for essentially all of the total acidity of the hydrocarbon phase. The distributions at 26 C of nitric acid between aqueous phases (containing various concentrations of nitric acid and sulfuric acid) and a nitrobenzene phase are also shown on Figure 5. 

Dark green, crystalline substance with an opalescent luster. Slightly soluble in water, insoluble in alcohol. Not attacked by hot dilute sulfuric or nitric acids. Soluble in boiling hydrochloric acid. Converts to CrsO on heating in air. 

Decomposed by water into sulfuric and nitric acids soluble without decomposition in concentrated H3SO4. 

Deep black. Insoluble in water. Resistant to hydrochloric and sulfuric acids and dilute nitric acid. Vigorous reaction with cone, nitric acid. Soluble in cone. Na3S solution, alkali polysulfides and KCN. d ° 8.754. 

The procedure given below affords a nitric acid-soluble solution of the sodium salt, which is the starting material for the preparation of the rubidium or cesium salts. Since this solution of the sodium salt also contains a very large quantity of NaNOa, it cannot be used directly for the preparation of the crystalline sodium salt or the free acid (by Drechsel s method). 

Characters and Tests.—Colourless odourless, translucent, fibrous masses, tough and difficult to powder soluble in water and in rectified spirit. Its aqueous solution, heated with potassium hydrate, evolves ammoniacal gas, which may be recognised by its odour with silver nitrate it gives a white curdy precipitate (silver chloride), insoluble in boiling nitric acid, soluble in ammonia. 

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