Mercury compound, liquid

DOT/UN/NA/IMCO shipping UN 2024 (mercury compounds, liquid) UN 2025 (mercury compounds, solid) IMO 6.1 (mercury compounds, liquid or solid) UN 2809 (DOT)b UN 1624 (mercuric chloride) IMO 6.1 (mercuric chloride) No data... 

Cinnabar Electron tubes containing mercury Mercuric salt Mercurous compound Mercury compound, liquid, n.o.s, 6.1 Mercury compound, solid, n.o.s., 6.1 Mercury contained in manufactured articles, 8 Mercury vapour tubes Phenylmercuric compound, n.o.s., 6.1 Quicksilver... 

Incorporation of Metal In certain cases, metal atoms, after their discharge, can penetrate into the substrate metal, forming alloys or intermetallic compounds in the surface layer and down to a certain depth. This effect has been known for a long time in the discharge of metals at liquid mercury, where liquid or solid amalgams are formed. In 1968 B. Kabanov showed that an analogous effect is present in metal ion discharge at many solid metals. 

There are mercury compounds with mercury oxidation numbers lower than +1, e.g. +0.5,16,21 +0.6713,15,27 or +0.35.18,20 Yellow crystals of Hg3(AsF6)2 have been formed by the reaction of metallic mercury with AsFs in liquid S02.13 X-Ray structure determination showed a linear polycation Hg+—Hg—Hg+ with Hg—Hg distances of 255 pm.15 Metallic mercury and SbF5 react in liquid S02 to form Hg3(Sb2Fu)2.15,23 The Hg—Hg distances in the complex Hg3(AlCU)2 are 256 pm 14 the Hg—Cl distances are 251 and 256 pm the Hg—Hg—Hg angle is 174°. Dark red crystals of Hg4(AsF6)2 were obtained in liquid S02. This coordination compound contains centrosymmetric Hg4+ ions, which are connected to chains (see l).21... 

Arsenical or mercury compounds are detected by evaporating a quarter of a litre of the ink and heating the extract with 1-2 c.c. of concentrated sulphuric acid and 5-10 c.c. of fuming nitric acid until nitrous vapours are eliminated, the addition of nitric acid and the heating being repeated until a perfectly colourless liquid is obtained (Rothe). The sulphuric add is then expelled and the residue tested for arsenic and mercury by the ordinary analytical methods. 

Among the products of interaction, a minor one is an explosive liquid. See Other ALLYL COMPOUNDS, MERCURY COMPOUNDS... 

Newsome [6] determined methyl mercury compounds in wheat flour and ground oats by extraction with benzene-formic acid followed by purification and gas-liquid chromatography. Interfering substances were removed from the extracts by column chromatography on silicic acid and partitioning with cysteine acetate solution. The method is sensitive in the 0.01-0.9 ppm range with a recovery of generally better than 95%. 

Munaf, E., H. Haraguchi, D. Ishii, T. Takeuchi, and M. Goto. 1990. Speciation of mercury compounds in waste water by microcolumn liquid chromatography using a preconcentration column with cold-vapour atomic absorption spectrometric detection. Anal. Chim. Acta 235 399 404. 

Mercury (Hg) Mercury is a silvery white liquid metal. Because of its high density, mercury is used in sphygmomanometers. It is also found in some thermometers. Before its toxic nature was fully understood, mercury compounds had been used in medical applications ranging from treatment of syphilis to constipation. Mercury alloys well with many other metals, and alloys containing mercury are known as amalgams. 

Various types of reference electrodes are used for permanent embedment in concrete. Some fall into the category of double junction electrodes of the second kind and are therefore reference electrodes in the true sense. Others are simply a piece of metal or another material put into the concrete. Although stable and accurate, SCE is not used for permanent embedment in concrete, mainly because it contains a liquid metal, which makes it difficult to manufacture in a rugged form. In addition, environmental reasons make it undesirable for permanent use in the field (poisonous mercury and mercury compounds). 

First, to produce the mercury component, a pulverized mixture of 50 g of allylcarbamide and 50 g of succinic anhydride is heated for 30 minutes at 110°C. After cooling the fused mass is ground with 50 cc of cold water and the crystalline mass after quick filtering from the liquid is recrystallized from hot water. The white crystalline needles having a MP of 142° to 144°C are allyl-succinyl-carbamide. In order to produce a mercury compound thereof a mixture of 20 g of the allyl-succinyl-carbamide and 30 g of mercury acetate is... 

C. S. Chiou, S. J. Jiang, K. S. K. Danadurai, Determination of mercury compounds in fish by microwave-assisted extraction and liquid chromatography-vapor gener-ation-inductively coupled plasma mass spectrometry, Spectrochim. Acta, 56B (2001), 1133-1142. 

Description Three RAM processes are available to remove arsenic (RAM I) arsenic, mercury and lead (RAM II) and arsenic, mercury and sulfur from liquid hydrocarbons (RAM III). Described above is the RAM II process. Feed is heated by exchange with reactor effluent and steam (1). It is then hydrolyzed in the first catalytic reactor (2) in which organometallic mercury compounds are converted to elemental mercury, and organic arsenic compounds are converted to arsenic-metal complexes and trapped in the bed. Lead, if any, is also trapped on the bed. The second reactor (3) contains a specific mercury-trapping mass. There is no release of the contaminants to the environment, and spent catalyst and trapping material can be disposed of in an environmentally acceptable manner. 

Mercury is a naturally occurring metal that has several forms. Also known as quicksilver because it is a silver-colored liquid at room temperature, mercury is an element that does not break down. It occnrs natnrally and is fonnd in very small amounts in oceans, rocks, and soils. It becomes airborne when rocks erode, volcanoes erupt, and soil decomposes. Mercnry combines with carbon to make organic mercury compounds (methyl mercury).3 3 ... 

Mercury and its compounds have a long and rich history. Its atomic symbol is derived from the Greek name Hydragyrum meaning watery silver. The English word for the element comes from the name of the Roman messenger god because of mercury s liquid mobility and quickness . As early as the second millennium b.c., mercury may have been recovered and nsed in Egypt. Recovery of the element from... 

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