Mercury yellow

Merkur, m. mercury, -blende, /. Min.) cinnabar. -chlorid, n. mercury chloride, specif, mercuric chloride, mercury(II) chloride, -chloriir, n. mercurous chloride, mercury(I) chloride, -gelb, n. mercury yellow, turpeth mineral. 

SYNS C.I. 77760 MERCURIC OXIDE, RED MERCURIC OXIDE, soUd (DOT) MERCURIC OXIDE, YELLOW MERCURY(II) OXIDE OXYDE de MER-CURE (FRENCH) QUECKSILBEROXID (GERMAN) RED OXIDE of MERCURY RED PRECIPITATE SANTAR YELLOW MERCURIC OXIDE YELLOW OXIDE of MERCURY YELLOW PRECIPITATE... 

Liquid Pearl here is a synonym for mercury obtained by refining cinnabar see Shiyao erya, i.ib. The terms Frost and Snow too are part of several secret names for refined mercury. Yellow and White usually denotes gold and silver, and the reason for its mention in relation to the Essence of Lead is unclear to me. In a description of the method for making the Mysterious and Yellow, the Jiudan jingjue, 12.1b, has White Snow (baixue) instead of Yellow and White this reading may be preferable. 

Synonyms Mercuric oxide (INCI) Mercury (II) oxide Mercury oxide, yellow Yellow mercuric oxide Yellow oxide of mercury Yellow precipitate... 

Mercury group Schuetteite Mercury yellow Turbith mineral Merck Index 996) 5941... 

According to Heaton (1928) mercury yellow was an obsolete or rarely used pigment. The composition is given as a basic sulphate of mercury . It is equivalent to the term turbith mineral (. v.). 

Heaton (1928) gives the composition of the obsolete or rare pigment he calls mercury yellow as a basic sulphate of merciuy , while mercmy oxonium sulfate is hsted by the Merck Index (1996) as synonymous with turbith mineral (qq.v.) it is this latter association which is most important for historical pigments. 

Mercury sulfates group Cinnabar Mercury yellow, Turbith mineral Bailey et al. (1959) Heaton (1928) 382 Merck Index (1996) Weil (2001)... 

Tin(IV) in aqueous acid gives a yellow precipitate with hydrogen sulphide, and no reaction with mercury(II) chloride. 

Dibromine monoxide, BtjO, is prepared, similar to the corresponding dichlorine compound, by the action of a solution of bromine in carbon tetrachloride on yellow mercury(II) oxide ... 

Mercury(II) oxide, HgO, occurs in both yellow and red forms the yellow form is precipitated by addition of hydroxide ion to a solution containing mercury(II) ions, and becomes red on heating. Mercury(II) oxide loses oxygen on heating. 

Mercuryill) iodide, Hglj, is coloured either red or yellow, and is precipitated (yellow, turning red) by adding the stoichiometric amount of iodide ion to a solution containing mercury(II) ... 

Mercury 11) compounds in solution give a black precipitate with hydrogen sulphide or a yellow precipitate with alkali hydroxide (pp. 437. 438). 

Relativistic effects are cited for changes in energy levels, resulting in the yellow color of gold and the fact that mercury is a liquid. Relativistic effects are also cited as being responsible for about 10% of lanthanide contraction. Many more specific examples of relativistic effects are reviewed by Pyykko (1988). 

The mercury contained in the mother Hquid and washings of either method is recovered by treatment with sodium hydroxide solution. Yellow mercuric oxide is precipitated and filtered. The filtrate is treated further to remove the last traces of mercury before it is discarded. 

Mercuric chloride is widely used for the preparation of red and yellow mercuric oxide, ammoniated mercury/7(9/USP, mercuric iodide, and as an intermediate in organic synthesis. It has been used as a component of agricultural fungicides. It is used in conjunction with sodium chloride in photography (qv) and in batteries (qv), and has some medicinal uses as an antiseptic. 

Mercurous Nitrate. Mercurous nitrate [10415-75-5] Hg2N20 or Hg2(N02)2, is a white monoclinic crystalline compound that is not very soluble in water but hydrolyzes to form a basic, yellow hydrate. This material is, however, soluble in cold, dilute nitric acid, and a solution is used as starting material for other water-insoluble mercurous salts. Mercurous nitrate is difficult to obtain in the pure state directly because some mercuric nitrate formation is almost unavoidable. When mercury is dissolved in hot dilute nitric acid, technical mercurous nitrate crystallizes on cooling. The use of excess mercury is helpful in reducing mercuric content, but an additional separation step is necessary. More concentrated nitric acid solutions should be avoided because these oxidize the mercurous to mercuric salt. Reagent-grade material is obtained by recrystaUization from dilute nitric acid in the presence of excess mercury. 

Yellow mercuric oxide may be obtained by precipitation from solutions of practically any water-soluble mercuric salt through the addition of alkah. The most economical are mercuric chloride or nitrate. Although yellow HgO has some medicinal value in ointments and other such preparations, the primary use is as a raw material for other mercury compounds, eg, Millon s ha.se[12529-66-7], Hg2NOH, which is formed by the reaction of aqueous ammonia and yellow mercuric oxide. 

Chlorine dioxide is a yellow-green gas and soluble in water at room temperature to about 2.9 g/1 chlorine dioxide (at 30 mm mercury partial pressure) or more than 10 g/1 in chilled water. The boiling point of liquid chlorine dioxide is 11° C the melting point is - 59° C. Chlorine dioxide gas has a specific gravity of 2.4. The oxidant is used in a water solution and is five times more soluble in water than... 

Tile only instance of isolation of a stable benzo-l,2-dithiete is the yellow crystalline compound 187, which was obtained by photolysis of 188 in heptane at -20°C using a medium-pressure mercury lamp [75JCS(CC)756 77JCS(P1)515],... 

Alt-malz, n. stored malt, -messing, n. old brass, -metall, n. old metal, scrap metal, -papier, n. old paper, used paper, waste paper, -rot-grundierung, /, (Dyeing) old red ground, -rotverfahren, n. old red process. Turkey-red dyeing, -schadenwasser, n. (Pharm.) yellow mercurial lotion. stoff, m. old material, waste. 

Pfiitze,/, pool, puddle, wallow, pH, abbrev. pH, pn (symbol for hydrogen-ion concentration) (pro Hundert) per cent, phagedanisches Wasser. (Pharm.) yellow mercurial lotion. 

To obtain the free base, 34 g (0.256 mol) of N-ethyl-3-piperidinol and 20 g (0.22 mol) of diphenylacetyl chloride were mixed in 80 cc of isopropanol and the solution was refluxed for 2 hours. The isopropanol was evaporated in vacuo at 30 mm pressure, the residue was dissolved in 150 cc of water and the aqueous solution was extracted several times with ether. The aqueous solution was then neutralized with potassium carbonate and extracted with ether. The ethereal solution was dried over anhydrous potassium carbonate and the ether removed by distillation. The product was then distilled at its boiling point 180° to 181°C at 0.13 mm of mercury whereby 14 g of a clear yellow, viscous liquid was obtained. The nitrogen content for CjiHjjNOj was calculated as 4.33% and the nitrogen content found was 4.21%. 

The crude liquid acid (about 300 g.) is cooled with running water and 15 cc. of concentrated sulfuric acid is added the clear yellow oil becomes cloudy. The acid is esterified by the method described in Org. Syn. 3, 54, with the following changes all three flasks, the alcohol flask, the trap, and the esterification flask are i-l. round-bottom wide-neck flasks. The alcohol flask and the trap are set on adjacent steam baths. The esterification flask is placed in an oil bath which is heated by a free flame. A safety tube leads from the alcohol flask and dips under 7.5 cm. of mercury contained in a side-arm tube. 

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