Mercury and its salts

Oxalic acid Mercury and its salts Silver and its salts... 

There are some differences in the behavior of alloys due to the variations in caustic composition among the three cell processes. These differences occur mostly in lower-grade applications using materials less robust than nickel. Monel, for example, is subject to liquid-metal cracking by mercury and its salts. Stainless steels seem to be equally affected by diaphragm- and mercury-cell caustic, but if the caustic is consumed in some application, the residual chloride from diaphragm-cell NaOH can cause stress corrosion cracking [146]. 

In aqueous solutions intended for the external auditory canal or the middle ear, where the active substance has no preservative properties, the combination of benzalkonium chloride 0.01 % and disodium edetate 0.1 % is the first choice the second choice is methyl parahydroxybenzoate 0.1 %. They are dealt with in Sect. 23.8. Phenylmercuric salts are not used in ear drops anymore, as the use of mercury and its salts is discouraged for reasons of protection of the environment and possible toxic effects. 

If we could measure the potential E for any one individual electrode, it would be very easy to arrive at the electrolytic potentials of all other electrodes. We have only to build up the units in which we combine the first with all others of the series from the electromotive forces of these elements — if need be, corrected to normal ion concentration — we must then only subtract the E.P. of the first electrode in order to have all the others in absolute values. Unfortunately, up to now, we have in no case and in no way been able to do this except for the rather questionable calculation of the voltage between mercury and its salts from the Lippmann capillary phenomenon. In all galvanic cells, at least two electrodes are present. For this reason... 

Steel and stainless steel are suitable materials for equipment and piping in ethylene oxide service. Dangerous runaway reactions can result from contact with copper, silver, magnesium and their alloys mercury and its salts oxidizers of all types alkalies and acids, alcohols, mercaptans, and alkali metals. Ethylene oxide will polymerize violently if contaminated with aqueous alkalies, amines, mineral acids, metal chlorides, or metal oxides. 

Aluminum cannot be used with strong caustic solutions, although mildly alkaline solutions—when inhibited—will not attack aluminum. Aluminum may also be used to handle NH4OH (hot and cold). It does not, however, resist the effects of most other strong alkalis. Salts of strong acids and weak bases, except salts of halogens, have little effect. Aluminum may also be used to handle sulfur and its compounds. It will also be attacked by mercury and its salts. 

Sulfamic acid and its salts retard the precipitation of barium sulfate and prevent precipitation of silver and mercury salts by alkah. It has been suggested that salts of the type AgNHSO K [15293-60 ] form with elemental metals or salts of mercury, gold, and silver (19). Upon heating such solutions, the metal deposits slowly ia mirror form on the wall of a glass container. Studies of chemical and electrochemical behavior of various metals ia sulfamic acid solutions are described ia Reference 20. 

Middleton, W. J. et al., J. Amer. Chem. Soc., 1959, 81, 803-804 It is notably endothermic (AH°f (g) +125 kJ/mol, 2.84 kJ/g), and liquid fluoroacetylene is treacherously explosive close to its b.p., —80°C. The gas does not ignite in air and is not explosive. Ignition occurred in contact with a solution of bromine in carbon tetrachloride. The mercury and silver salts were stable to impact, but the latter exploded on heating, whereas the former decomposed violently. 

Aminotetrazole (91) reacts with potassium permanganate in excess aqueous sodium hydroxide to yield the disodium salt of 5-azotetrazole (92). 5-Azotetrazole is unstable and attempts to isolate it by acidification yields 5-hydrazinotetrazole (93). Diazotization of 5-aminotetrazole (91) in the presence of excess sodium nitrite yields 5-nitrotetrazole (94), a powerful explosive whose mercury and silver salts are primary explosives. ... 

Several uses have been suggested for levulinic acid and its salts. Thus, calcium levulinate seems to have advantages as a calcium carrier in tuberculosis therapy, and it is said to be more suitable than calcium gluconate for intravenous injection. A mercury salt, phenyl mercury... 

The most important use of this compound, the principal ore of mercury, is for making mercury metal and its salts. Another major application is pigment. Artificially prepared scarlet product, vermilion, is used as artists pigment... 

Warburg (Wted. Ann. XLi. 1, 1890) observed that the surface tension of the interface between mercury and dilute acid docixiascs as the amount of the corresponding mercury salt present in the solution increases. He therefore concluded that the salt is positively adsorbed in accordance with Gibbs adsorption equation. The adsorption by mercury of its salts from aqueous solution has been directly observed by McLewis jPA /s. Ghem. Lxxvil. 129,... 

Brandes and Stoehr14 (see Table IV) added potassium hydroxide to each reaction mixture before distilling it, and added sodium hydroxide to the distillate, liberating an oil which was separated and purified, and from which pyridine and four pyrazines were separated by means of their mercury and gold salts. 

The second book is devoted to what he calls the minor minerals, under which he includes mercury and its ores, sulphur, antimony, marcasites containing metals, vitriol, alum, arsenic, orpiment, and realgar, common salt and other salts, calamine, zaffre, ocher, Armenian bole, emery, borax, lapis lazuli, rock crystal and glass. 

SAFETY PROFILE Poison by intraperitoneal route. Moderately toxic by ingestion. Mutation data reported. A very dangerous fire hazard when exposed to heat, flame, or by chemical reaction with oxidizers. A severe explosion hazard when shocked or exposed to heat or flame. It is about as powerful as TNT. It is normally mixed with coUoided nitrocellulose or ammonium nitrate and paraffin wax. Can react vigorously with oxidizing materials and the derivatives can be explosive. The mercury and silver salts and other derivatives are much more impact-sensitive. When heated to decomposition it emits highly toxic fumes of NOx. See also NITRO COMPOUNDS. 

This is in accordance with the general properties and isomorphic relations of the acid and its salts, but such a formula indicates a deea-basic acid, whereas, with the exception of an ill-defined mercury salt (see p. 239), only hexabasicsalts, M 3H4[H2(W207)g], have been obtained. Even with such a weak base as dimethylpyrone, the salt produced is... 

Source Prescriptions for alcohol, hydragyrum (mercury), cinchona, opium, and quinine and its salts from Henry Beasley, The Book of Prescriptions (Philadelphia Lindsay and Blackiston, 1865), pp. 62-63, 282-284,195-196,371-372,422-423, respectively. 

This product is obtained by saponifying the acetate by 1-25 mols. of Normal sodium hydroxide solution, and acidifying the resulting solution with Normal sulphuric acid. Yield 91 per cent. It is decomposed at 228° C. (corr.). When dissolved in the calculated quantity of Normal alkali.it gives precipitates with the salts of various metals the copper salt is light green, decomposing at 193° to 197° C. lead, iron, calcium, silver, mercury and platinum salts are also known. 

Winship KA. 1985. Toxicity of mercury and its inorganic salts. Adverse Drug React Acute Poisoning Review 4(3) 129-160. 

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