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Mercury I thiocyanate

Mercury(I) bromide Mercury(I) carbonate Mercury(I) chloride Mercury(I) fluoride Mercury(I) iodide Mercury(I) oxalate Mercury(I) sulfate Mercury(I) thiocyanate Mercury(II) bromide Mercury(II) iodide Neodymium carbonate Nickel(II) carbonate Nickel(II) hydroxide Nickel(II) iodate Nickel(II) phosphate Palladium(II) thiocyanate Potassium hexachloroplatinate Potassium perchlorate Potassium periodate Praseodymium hydroxide... [Pg.1323]

Standard methods Chloride is still frequently determined titrimetrically (argentimetry with potentio-metric endpoint detection). But chloride can also be determined in a flow-through system with photometric detection. Chloride releases thiocyanate from mercury(I) thiocyanate, which reacts with Fe(III) to form a colored complex. [Pg.4987]

NjOj, LiMn04, indium selenide (indium, Z = 49 selenium, Z = 34), mercury(I) thiocyanate ... [Pg.172]

Determination of copper as copper(I) thiocyanate Discussion. This is an excellent method, since most thiocyanates of other metals are soluble. Separation may thus be effected from bismuth, cadmium, arsenic, antimony, tin, iron, nickel, cobalt, manganese, and zinc. The addition of 2-3 g of tartaric acid is desirable for the prevention of hydrolysis when bismuth, antimony, or tin is present. Excessive amounts of ammonium salts or of the thiocyanate precipitant should be absent, as should also oxidising agents the solution should only be slightly acidic, since the solubility of the precipitate increases with decreasing pH. Lead, mercury, the precious metals, selenium, and tellurium interfere and contaminate the precipitate. [Pg.455]

Mercury(II) perchlorate. 6 (or 4)dimethyl sulfoxide, 4073 Mercury(II) Af-perchlorylbenzylamide, 3644 Mercury(II) peroxybenzoate, 3630 Mercury(II) picrate, 3427 Mercury(II) sulfide, 4602 Mercury(II) thiocyanate, 0975 Mercury(I) nitrate, 4604 Mercury(I) oxide , 4608 Mercury(I) thionitrosylate, 4605 Mercury, 4595 Mercury nitride, 4610 Mercury peroxide, 4601 (9-MesitylenesuIfonylhydroxylami ne, 3164 Methacryloyl chloride, see 2-Methyl-2-propenoyl chloride, 1453 f Methanamine, see Methylamine, 0491... [Pg.2108]

IV.10 THIOCYANATES, SCN" Solubility Silver and copper(I) thiocyanates are practically insoluble in water, mercury(II) and lead thiocyanates are sparingly soluble the solubilities, in g t-1 at 20°, are 0-0003, 0 0005, 0-7, and 0-45 respectively. The thiocyanates of most other metals are soluble. [Pg.317]

The bromide and iodide, as well as pseudohalides see Pseudohalide) such as the thiocyanate and azide, all have the general formula Hg2X2. Mercury(I) bromide is a white solid that sublimes at 345 °C, while mercury(I) iodide is a yellow solid that sublimes at 140 °C. The crude iodide... [Pg.2588]

The principal methods for the determination of mercury are as follows (i) Thiocyanate titration. This method is applicable to solutions in which all the mercury is in the mercuric state and from which halides are absent. Nitrous acid must also be absent as it masks the end-point by forming a... [Pg.406]

Determination. To an aliquot of the silver(I) solution containing between 10 and 50 pg of silver, add sufficient EDTA to complex all those cations present which form an EDTA complex. If gold is present (>250 xg) it is masked by adding sufficient bromide ion to form the AuBr4 complex. Cyanide, thiocyanate or iodide ions are masked by adding sufficient mercury(II) ions to complex these anions followed by sufficient EDTA to complex any excess mercury(II). Add 1 mL of 20 per cent ammonium acetate solution, etc., and proceed as described under Calibration. [Pg.183]

The solution should be free from the following, which either interfere or lead to an unsatisfactory deposit silver, mercury, bismuth, selenium, tellurium, arsenic, antimony, tin, molybdenum, gold and the platinum metals, thiocyanate, chloride, oxidising agents such as oxides of nitrogen, or excessive amounts of iron(III), nitrate or nitric acid. Chloride ion is avoided because Cu( I) is stabilised as a chloro-complex and remains in solution to be re-oxidised at the anode unless hydrazinium chloride is added as depolariser. [Pg.515]

Mixed halide-thiocyanate compounds Hg(SCN)X (X = Cl, Br, I) are formed from equimolar amounts of the pure components. They contain six-coordinated mercury(H) achieved by bridging X and SCN groups.234 The formation constants of the mixed thiocyanato complexes have been detected spectroscopically.233 Raman spectra of mixed halothiocyanatomercurate(U) complexes have been reported by Cooney and Hall.236 The structure of ammonium... [Pg.1063]

Tikhonova, I. A., Dolgushin, F. M., Yanovsky, et al, Crown compounds for anions. A polymeric complex of cyclic trimeric perfluoro-o-phenylenemercury with thiocyanate anion containing an infinite helical chain of alternating molecules of mercury-containing macrocycle and SCN- ions. J. Organomet. Chem. 1996, 508, 271-273. [Pg.318]

Anodic limits on mercury. Mercury is readily oxidized, particularly in the presence of anions that precipitate or complex mercury or mercury ) ions, such as the halides, cyanide, thiosulfate, hydroxide, or thiocyanate. For this reason, mercury is seldom used to study anodic processes except for those subtances that are easily oxidized, for example, Cr(II), Cu(I), and Fe(II). Under carefully controlled conditions, mercury can be coated with a thin layer of mercury chloride such that it does not interfere with electron transfer in the oxidation of a number of organic compounds, particularly amines.66... [Pg.209]

MERCURIC THIOCYANATE (592-85-8) Hg(SCN)i Moderately unstable solid. Possible violent reaction with strong oxidizers strong acids organic peroxides, peroxides and hydroperoxides potassium chlorate potassium iodate, silver nitrate, sodium chlorate, nitric acid. Incompatible with ammonia, chlorates, hydrozoic acid, methyl isocyanoacetate, nitrates, nitrites, perchlorates, sodium peroxyborate, trinitrobenzoic acid, urea nitrate. When heated, this material swells to many times its original bulk. Attacks aluminum in the presence of moisture. Decomposes above 329°F/165°C, releasing toxic mercury and cyanide fumes, and sulfur and nitrogen oxides. On small fires, use dry chemical powder (such as Purple-K-Powder), alcohol-resistant foam, or COj extinguishers. MERCURIC (Spanish) (7439-97-6) see mercury. [Pg.652]

See other pages where Mercury I thiocyanate is mentioned: [Pg.353]    [Pg.2589]    [Pg.1058]    [Pg.2588]    [Pg.1122]    [Pg.1892]    [Pg.1315]    [Pg.1080]    [Pg.1363]    [Pg.1024]    [Pg.1077]    [Pg.353]    [Pg.2589]    [Pg.1058]    [Pg.2588]    [Pg.1122]    [Pg.1892]    [Pg.1315]    [Pg.1080]    [Pg.1363]    [Pg.1024]    [Pg.1077]    [Pg.197]    [Pg.859]    [Pg.221]    [Pg.298]    [Pg.2325]    [Pg.666]    [Pg.1123]    [Pg.1080]    [Pg.1024]    [Pg.1077]    [Pg.62]    [Pg.625]    [Pg.450]    [Pg.184]    [Pg.89]    [Pg.1577]    [Pg.439]    [Pg.215]    [Pg.98]    [Pg.1517]    [Pg.116]   
See also in sourсe #XX -- [ Pg.1122 ]



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Mercury thiocyanate

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