Titanium Titanic Acid

Formed by passing chlorine gas over metallic titanium, or a mixture of titanic acid and charcoal, at a red-heat. It is a transparent colourless liquid, boiling a little above 212 , and fuming strongly in the air. When a few drops of water are added to a portion of it, a very violent action takes place, and a solid hydrate of titanic acid is left, hydrochloric acid being given off. Ti Cl,-h2 HO=Ti 0,-f2 H Cl. It absorbs a large quantity of ammonia, and yields a solid compound. 

Bisulphuret of titanium is formed by passing the vapour of bisulphuret of carbon over titanic acid, at a white-heat. CS. -h Ti 0, = COj -i- Ti S . It forms thick, green masses, which become yellow and metallic-looking by friction. 

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Titanium Sulfates. Solutions of titanous sulfate [10343-61-0] ate readily made by reduction of titanium(IV) sulfate ia sulfuric acid solutioa by electrolytic or chemical means, eg, by reduction with ziac, ziac amalgam, or chromium (IT) chloride. The reaction is the basis of the most used titrimetric procedure for the determination of titanium. Titanous sulfate solutions are violet and, unless protected, can slowly oxidize ia coatact with the atmosphere. If all the titanium has been reduced to the trivalent form and the solution is then evaporated, crystals of an acid sulfate 3 Ti2(S0 2 [10343-61-0] ate produced. This purple salt, stable ia air at aormal temperatures, dissolves ia water to give a stable violet solutioa. Whea heated ia air, it decomposes to Ti02, water, sulfuric acid, and sulfur dioxide. 

Dicarboxyhc acids, eg, succinic or adipic, do not dissolve titanic acid. A phthalate has been prepared by adding acidic titanium sulfate solution to sodium phthalate solution. 

Titan-s ure, /. titanic acid. -sMureonhydrid, n. titanic anhydride, titanium dioxide (TiOj). -schwefelsdure,/. titanosulfmic acid, -stahl, m. titanium steel, -stickstoff, m. titanium nitride, -verbindung, /. titanium compound, -weiss, n. titanium white. 

Titanium Dioxide (Titania, Titanium White, Rutile, Anatase, Brookite, Titanic Anhydride, Titanic Acid Anhydride, Titanic Oxide). Ti02, mw 79.90, Selected Parameters of the Allotropic Forms of Ti02... 

Synonyms titanic oxide titanic acid anhydride titanium anhydride titania titanium white... 

Titanium forms three series of salts in which the element is respectively tetra-, tri-, and mono-valent. Thus, titanium and chlorine form titanium tetrachloride, TiCl4, titanium trichloride, TiCl3, and titanium monochloride, TiCl. The two last are unstable and readily pass into the higher chloride. Titanium tetrachloride shows a marked resemblance to tin tetrachloride it unites easily with hydrochloric acid in solution, with formation of the complex acid, ehloro-titanic acid, [TiCl6]tI2, and forms many crystalline products with other chlorides. It also unites with ammonia, forming ammines. 

Titanic Acid. Add a 10% ammonia solution to 10 ml of a solution of titanium tetrachloride in hydrochloric acid with constant stirring up to the complete precipitation of titanic acid. Let the precipitate settle, pour off the solution, and rinse it several times with water by decantation. 

What hydrates are called alpha- and beta-titanic acids, how are they prepared, and what are their properties How, having at hand titanium(IV) oxiue, can you prepare potassium titanate and titanyl sulphate ... 

Stable selenium sols may be obtained by the reducing action of quadrivalent titanium. If a solution of titanium trichloride (1-5 per cent.) is boiled for some time, hydrolysis and oxidation occur on addition of this solution to one of selenium dioxide (0-2 per cent.) reduction to selenium occurs and any unchanged titanic acid, Ti(OII)4, remains in colloidal solution and exerts a protective action.4... 

Chemical Properties. Titanium dioxide is amphoteric with very weak acidic and basic character. Accordingly, alkali-metal titanates and free titanic acids are unstable in water, forming amorphous titanium oxide hydroxides on hydrolysis. 

The removal of titanium from mixed niobic and tantalic acids is a difficult matter. Although titanium and niobium compounds display considerable differences in their general behaviour, when the two elements occur together they appear to undergo a change, in consequence of which they become difficult to separate. Niobic acid, for instance, is precipitated from a much more concentrated boiling sulphuric acid solution than is titanic acid but when the two acids are dissolved... 

Cesium titanium alum forms violet octahedral crystals which are sparingly soluble in cold water, more soluble in hot. These crystals belong to the /3-type alum crystal structure, or those alums that contain a large unipositive ion. The compound is oxidized rapidly in air, and water solutions become turbid on exposure to air, precipitating titanic acid. 

VII.17 TITANIUM, Ti (Ar 47-90) - TITANIUM(IV) Titanium is a greyish, hard metal. It can be dissolved in hot, concentrated sulphuric acid and in hydrogen fluoride. Like tin, it is insoluble in concentrated nitric acid, because of the formation of titanic acid on the surface of the metal, which protects the rest of the metal from the acid. 

Titanium trichloride is an extremely easily oxidized material which dissolves in water to form a violet solution. On oxidation, it is converted to the colorless titanic acid, Ti(OH)4. Using a titanium trichloride solution of known strength, it is possible to reduce quantitatively dyes of various classes, the endpoint being taken as the point where the color of the dye disappears. 

Change in the selectivity patterns of transition metal ion/H+ systems has been encountered with the amorphous and anatase types of hydrous titanium oxides with different crystallinities [24]. Potassium titanate, KjO nXi02 (n = 2-4), in particular, exhibits a layered structure. Fibrous titanic acid, H2Ti409 nHjO, is obtained by acid treatment of fibrous K2Ti409 nH20 and shows higher selectivity for K, Rb and Cs than the amorphous titanic acid [206]. 

Isopropyl litanate(IV) ((C3H70)4Ti) NSC 60576 Orgalix TA 10 TA 10 Tetraisopropanol-atotitanium Tetraisopropoxide titanium Tetraisopropoxy-titanium Tetraisopropoxytitanium(IV) Ti Isopropylate Tilcom TIPT Titanic acid isopropyl ester Titanium isopropylate Titanium tetraisopropoxide Titanium(4 ) isopropoxide Titanium(IV) isopropoxide TyzorTPt. 

The production of camphene is usually carried out by isomerization of a-pinene over titanium oxide catalysts [3]. These are prepared by treating titanium oxide with an acid in order to obtain a layer of titanic acid on the surface of the oxide [4]. The reaction was reported as showing zero order [4] or a transition from first order at low conversion to zero order above ca. 30% conversion [5]. 

Titanium (IV) oxide crystallizes In three modifications of decreasing stability rutile, anatase and brookite. Whether the synthesis of brookite has been achieved is still in doubt. Anatase is formed via the hydrolysis of Ti halides at not too high a temperature (600°C) or via low-temperature calcining ( 700°C) of precipitated titanic acid. The lattice is stabilized by adsorbed anions, among which the most effective are sulfate and phosphate. Pure TiOg calcined at high temperature always yields the rutile lattice. 

Titania Titanic acid anhydride Titanic anhydride Titanic earth Titanic oxide. See Titanium dioxide... 

Synonyms Cl 77891 Pigment white 6 Titania Titanic acid anhydride Titanic anhydride Titanic earth Titanic oxide Titanium oxide Titanium peroxide Titanium white Classification Inorganic oxide Definition Two crystalline forms anatase and rutile Empirical OiTi Formula TiO ... 

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