49 Sentences With "stannic" | Random Sentence Generator

The tin contained in the stannate is deposited on the cotton in the form of stannic oxide, or, more strictly, stannic acid.

The tin chloride is oxidised to stannic acid and the gold chloride is reduced to metallic gold forming a colloidal precipitation onto the stannic acid.

Stannous hydroxide is easily oxidized to stannic oxide (SnO2) by air.

This will bring his result, if calculated as stannic oxide, to 80.9 lbs.

Tin oxide or stannic oxide is commonly used as an opacifier in ceramic glazes.

It consists of tin dioxide, or stannic oxide, and crystallizes in the tetragonal system.

What are the products of hydrolysis when stannic chloride is used as a mordant?

If tin be present there will be an insoluble residue left of stannic oxide.

Stannic acid has a greater tendency to form a base than has silicic acid.

By adding hydrate of potassium or an alkaline carbonate to a solution of stannic chloride.

Double salts of cerous chloride with stannic chloride, mercuric chloride, and platinic chloride are also known.

Each grain of stannic oxide, after being washed and gently ignited, is equivalent to 78365 gr.

Tin in solution as stannic or stannous chloride is precipitated as metal by means of zinc.

Double salts of cerous chloride with stannic chloride, mercuric chloride, and platinic chloride are also known.

The working temperature is 70ºC. The process takes place basically because the sodium perborate oxidises the stagnate ion into stannic.

The developed plate was dried using hot air to evaporate solvents from the plate and sprayed with stannic chloride reagent.

This book presents the background science and technology of the stannic oxide gas sensor, along with practical information about its applications.

After standing about twelve hours in a covered beaker the precipitate was filtered off and the tin weighed as stannic oxide.

Protoxide of tin takes fire in the flame of oxidation, and burns with flame and some white vapor into tin acid, or stannic acid.

Tin occurs in grains of the native metal but chiefly as stannic oxide, SnO2, in the mineral cassiterite, the only tin mineral of commercial significance.

Although SnO2 is insoluble in water, it is amphoteric, dissolving in base and acid.Inorganic & Theoretical chemistry, F. Sherwood Taylor, Heineman, 6th Edition (1942) "Stannic acid" refers to hydrated tin (IV) oxide, SnO2, which is also called "stannic hydroxide." Tin oxides dissolve in acids. Halogen acids attack SnO2 to give hexahalostannates,Donaldson & Grimes in Chemistry of tin ed. P.G. Harrison Blackie (1989) such as [SnI6]2−.

White enamel is produced by adding stannic and arsenious acids to the flux, the quantity of the acid affecting the density, or opacity, of the enamel.

The colour of pure tin is retained during exposure because a thin, invisible, protective film of stannic oxide is formed spontaneously by reaction with the oxygen of the air.

Sometime between 1858 and 1859, French chemist François-Emmanuel Verguin found that reaction of aniline with stannic chloride gave a fuchsia, or rose-coloured, dye, which he named fuchsine.

Tin dioxide, the raw ingredient in Tin-glazing. For glaze use only one tin compound, tin (IV) oxide Tin dioxide (SnO2), and also called stannic acid,’A Treatise On Ceramic Industries.’ E.Bourry. Fourth edition.

TBT, or tributyltin, tributylstannyl or tributyl stannic hydride compounds are organotin compounds. They have three butyl groups covalently bonded to a tin(IV) centre.Davies, Alwyn George. (2004) Organotin Chemistry, 2nd Edition Weinheim: Wiley-VCH.

Although a specialized application, SnCl4 is used in Friedel-Crafts reactions as a Lewis acid catalyst for alkylation and cyclisation. Stannic chloride is used in chemical reactions with fuming (90%) nitric acid for the selective nitration of activated aromatic rings in the presence of inactivated ones.

The compound is prepared by a redistribution reaction by combining stannic chloride and tetrabutyltin: :3 (C4H9)4Sn + SnCl4 → 4 (C4H9)3SnCl Tributyltin chloride hydrolyzes to the oxide [(C4H9)3Sn]2O Tributyltin chloride is used as a precursor to other organotin compounds and reagents, such as tributyltin hydride.

Stannic chloride was used as a chemical weapon in World War I, as it formed an irritating (but non- deadly) dense smoke on contact with air: it was substituted for by a mixture of silicon tetrachloride and titanium tetrachloride near the end of the war due to shortages of tin..

Tin(IV) oxide, also known as stannic oxide, is the inorganic compound with the formula SnO2. The mineral form of SnO2 is called cassiterite, and this is the main ore of tin. With many other names, this oxide of tin is an important material in tin chemistry. It is a colourless, diamagnetic, amphoteric solid.

The dioxide SnO2 (cassiterite) forms when tin is heated in the presence of air. SnO2 is amphoteric, which means that it dissolves in both acidic and basic solutions. Stannates with the structure [Sn(OH)6]2−, like K2[Sn(OH)6], are also known, though the free stannic acid H2[Sn(OH)6] is unknown.

Tin(IV) chloride, also known as tin tetrachloride or stannic chloride, is an inorganic compound with the formula SnCl4. It is a colorless hygroscopic liquid, which fumes on contact with air. It is used as a precursor to other tin compounds. It was first discovered by Andreas Libavius (1550–1616) and was known as spiritus fumans libavii.

Pure tin after solidifying keeps a mirror-like appearance similar to most metals. However, in most tin alloys (such as pewter), the metal solidifies with a dull gray color. Tin is a post-transition metal in group 14 of the periodic table of elements. It is obtained chiefly from the mineral cassiterite, which contains stannic oxide, SnO2.

It is also used to opacify ceramic glazesTin Oxide ( SnO2 ) Stannic Oxide – Properties and Applications, The A to Z of Materials. and milk glass; bone ash is also used. Opacifiers must have a refractive index (RI) substantially different from the system. Conversely, clarity may be achieved in a system by choosing components with very similar refractive indices.

Tin (IV) oxide fibers (optical microscope) Tin(IV) oxide crystallises with the rutile structure. As such the tin atoms are six coordinate and the oxygen atoms three coordinate. SnO2 is usually regarded as an oxygen-deficient n-type semiconductor.Solid State Chemistry: An Introduction Lesley Smart, Elaine A. Moore (2005) CRC Press Hydrous forms of SnO2 have been described as stannic acid.

Masks are typically tested for fit before use. After a mask is fitted, it is often tested by various challenge agents. Isoamyl acetate, a synthetic banana flavourant, and camphor are often used as innocuous challenge agents. In the military, teargases such as CN, CS, and stannic chloride in a chamber may be used to give the users confidence in the efficiency of the mask.

Glass containers typically receive two surface coatings, one at the hot end, just before annealing and one at the cold end just after annealing. At the hot end a very thin layer of tin(IV) oxide is applied either using a safe organic compound or inorganic stannic chloride. Tin based systems are not the only ones used, although the most popular. Titanium tetrachloride or organo titanates can also be used.

Tin(II) chloride, also known as stannous chloride, is a white crystalline solid with the formula 2. It forms a stable dihydrate, but aqueous solutions tend to undergo hydrolysis, particularly if hot. SnCl2 is widely used as a reducing agent (in acid solution), and in electrolytic baths for tin-plating. Tin(II) chloride should not be confused with the other chloride of tin; tin(IV) chloride or stannic chloride (SnCl4).

The decay of Rubidium-82, which undergoes positron emission. Rubidium-82 is produced through beta plus decay from its parent nucleus, strontium-82. The generator contains accelerator produced 82Sr adsorbed on stannic oxide in a lead-shielded column and provides a means for obtaining sterile nonpyrogenic solutions of RbCl(Halide salt form capable of injection). The amount (millicuries) of 82Rb obtained in each elution will depend on the potency of the generator.

SnO2 is used in sensors of combustible gases including carbon monoxide detectors. In these the sensor area is heated to a constant temperature (few hundred °C) and in the presence of a combustible gas the electrical resistivity drops.Joseph Watson The stannic oxide semiconductor gas sensor in The Electrical engineering Handbook 3d Edition; Sensors Nanoscience Biomedical Engineering and Instruments ed R.C Dorf CRC Press Taylor and Francis Doping with various compounds has been investigated (e.g. with CuO).

Many variations of the Prins reaction exist because it lends itself easily to cyclization reactions and because it is possible to capture the oxo-carbenium ion with a large array of nucleophiles. The halo-Prins reaction is one such modification with replacement of protic acids and water by lewis acids such as stannic chloride and boron tribromide. The halogen is now the nucleophile recombining with the carbocation. The cyclization of certain allyl pulegones in scheme 7 with titanium tetrachloride in dichloromethane at −78 °C gives access to the decalin skeleton with the hydroxyl group and chlorine group predominantly in cis configuration (91% cis).

The carbonyl group in the reactant in scheme 8 is masked as a dimethyl acetal and the hydroxyl group is masked as a triisopropylsilyl ether (TIPS). With lewis acid stannic chloride the oxonium ion is activated and the pinacol rearrangement of the resulting Prins intermediate results in ring contraction and referral of the positive charge to the TIPS ether which eventually forms an aldehyde group in the final product as a mixture of cis and trans isomers with modest diastereoselectivity. Scheme 8. Halo-Prins reaction The key oxo-carbenium intermediate can be formed by other routes than simple protonation of a carbonyl.

Hosmane earned Master of Science degree from Karnataka University, Karnataka, India. He then obtained a Ph.D. degree in Organometallic/Inorganic Chemistry on 'Some reactions of stannic chloride with silicon hydrides and some novel group IV derivatives of mercury' in 1974 from the University of Edinburgh, Scotland. After his postdoctoral research training in Queen's University of Belfast, he joined the Lambeg Industrial Research Institute in Northern Ireland, and then moved to the United States to study carboranes and metallacarboranes. After postdoctoral work with Russell Grimes at the University of Virginia, in 1979 he joined the faculty at the Virginia Polytechnic Institute and State University.

In 1989 and 1993, Yamada and co-workers reported the first enantioselective total synthesis of both the enantiomers of ptaquilosin, the aglycone of ptaquiloside. In the first step, the menthyl ester of cyclopentane-1,2-dicarboxylic acid 1 was partially hydrolyzed to afford the monomenthyl ester, which was later alkylated with methallyl bromide in the presence of HMPA to selectively produce 2. The product 2 was then converted to the acid chloride and treated with stannic chloride to effect Friedel-Crafts acylation to give enone 3. Hydride reduction, selective oxidation of the allylic alcohol, and silylation were then performed to provide compound 4.

Even Hofmann, who had at first criticized his student for leaving his academic research of quinine, later synthesized his own aniline dye, rosaniline. In 1858 the German chemist Johann Peter Griess obtained a yellow dye by reacting nitrous acid with aniline. It didn't last commercially, but it created even more interest in aniline as precursor for colorful compounds. French chemist François-Emmanuel Verguin reacted aniline with stannic chloride to yield fuchsine, a rose colored dye, the first of the triphenylmethane dyes. Further work by Hoffman along with the discovery of benzene’s structure (1858) and carbon’s tetravalency(1865), this science built the groundwork for modern organic chemistry.

A metallurgical method employed in the purification of copper which contains copper oxide as an impurity and also in the purification of tin which contains tin oxide (stannic oxide or "SnO2") as an impurity. The impure metal, usually in the form of molten blister copper, is placed in an anode furnace for two stages of refining.Extractive Metallurgy of Copper, Fourth Edition, Eds W G Davenport, M King, M Schlesinger and A K Biswas (Elsevier Science Limited: Kidlington, Oxford, England, 2002). In the first stage, sulphur and iron are removed by gently blowing air through the molten metal to form iron oxides and sulfur dioxide.J J Oudiz, "Poling processes for copper refining," Journal of Metals, December 1973, 35–38.

When it was realized that some metals form two different binary compounds with the same nonmetal, the two compounds were often distinguished by using the ending -ic for the higher metal oxidation state and the ending -ous for the lower. For example, FeCl3 is ferric chloride and FeCl2 is ferrous chloride. This system is not very satisfactory (although sometimes still used) because different metals have different oxidation states which have to be learned: ferric and ferrous are +3 and +2 respectively, but cupric and cuprous are +2 and +1, and stannic and stannous are +4 and +2. Also there was no allowance for metals with more than two oxidation states, such as vanadium with oxidation states +2, +3, +4 and +5.

While Chevrolet entertained the possibility of a pick-up version of the Kadett E, it never materialized. In the early 1990s, South African Kadett GSi's were further upgraded based on their success in production car racing and initially 500 special units were built as road cars for homologation purposes. This was a minimum requirement for entry into the Stannic Group N races. They went against BMW's 325iS (A 2.7 litre homologation special from BMW). They featured more aggressive 276-degree camshafts made by Schrick with 2 different settings for timing overlap (110° and 107°), revised intake and exhaust modifications (4-in-1 branch manifold and freeflow exhaust), Irmscher spring kit, modified engine management system by Promotec, a limited slip differential developed by Andre Verwey and special Aluett 7Jx15-inch ET35 alloy wheels, they were nicknamed the "Superboss" and held the world record for the most torque per litre (114 Nm per litre) for a naturally aspirated car until 2009 being beaten by the Ferrari 458 (117 Nm per litre).