Acetic acid, mercury -salt

S-Acetamidomethyl-L-cysteine hydrochloride Alanine, 3-[(acetamidomethyl)thio]-, monohydrochloride, i- (8) L-Cysteine, S-[(acetylamino)methyl]-, monohydrochloride (9) (28798-28-9) L-Cysteine hydrochloride, monohydrate (8, 9) (7048-04-6) Mercury(II) acetate Acetic acid, mercury (2) salt (8,9) (1600-27-7)... 

Acetic acid, Iead(IV) salt, 55,44, 115 Acetic acid, mercury(2+)saIt, [1600-27-7), 56,11... 

SYNS ACETIC ACID, MERCURY(2+) SALT BIS-(ACETYLOXY)MERCURY DIACETOXYMERCURY MERCURIACETATE MERCURIC DIACETATE MERCURY ACETATE MERCURY(2+) ACETATE MERCURY(II) ACETATE MERCURY DLACETATE MERCURYL ACETATE... 

Synonym(s) Calomel mild mercury chloride mercury monochloride mercury protochloride mercury subchloride calogreen cyclosan0 mercury chlorided Acetic acid, mercury (2+) salt bis(acetyloxy) mercury diacetocymercury mercury diacetate mercuriacetate mercury (II) acetate mercury (2+) acetate mercury acetated Chloromethylmercury monomethyl mercury chloride methylmercury chloride methylmercury monochlorideb... 

ACETIC ACID, MERCURY(II) SALT (1600-27-7) Light and heat can cause decomposition. May react violently or form sensitive explosive compounds with 2-butyne-l,4-diol, flu-oroacetylene, a-nitroguanidine, 5-nitrotetrazol, and others. Incompatible with ammonia, hydrozoic acid, methyl isocyanoacetate, sodium aeetylide, sodium peroxyborate, trinitrobenzoic acid, urea nitrate. 

Acetic acid, merouridi- Acetic acid, mercury(2+) salt A13-04458 Anthracene, 1,4-dihydro-, compd. with mercury diacetate (1 1) Bis(acetyloxy)mercury Caswell No, 543A CCRIS 7488 Diacetoxymercury EINECS 216-491-1 ERA Pesticide Chemical Code 052104 HSDB 1244 Mercuriacetate Mercuric acetate Mercuric diacetate Mercury acetate Mercury di(acetate) Mercury diacetate Mercury(2-f) acetate Mercury(ll) acetate Mercuryl acetate NSC 215199 UN1629, Catalyst for organic synthesis, pharmaceuticals. Used for mercuration of organic compounds. Crystals mp = 178-180 soluble in H2O (40 g/100 ml), EtOH LDso (rat orl) = 4 mg/kg, Atomargtc Chemetals Cerac Noah Chem. Thor. 

Acetic acid, mercapto-, strontium salt. See Strontium thioglycolate Acetic acid, mercury (2+) salt. See Mercury acetate (ic)... 

Synonyms Acetic acid, mercury (2+) salt Bis(acetyloxy) mercury Diacetoxymercury Mercuriacetate Mercuric acetate Mercuric diacetate Mercury acetate Mercury (II) acetate Mercury (2+) acetate Mercury di acetate Mercuryl acetate Empin cal C4HeHg04 Formula (CH3COO)2Hg... 

Liquid- and vapor-phase processes have been described the latter appear to be advantageous. Supported cadmium, zinc, or mercury salts are used as catalysts. In 1963 it was estimated that 85% of U.S. vinyl acetate capacity was based on acetylene, but it has been completely replaced since about 1982 by newer technology using oxidative addition of acetic acid to ethylene (2) (see Vinyl polymers). In western Europe production of vinyl acetate from acetylene stiU remains a significant commercial route. 

Another method of preparing mercuric acetate is the oxidation of mercury metal using peracetic acid dissolved in acetic acid. Careful control of the temperature is extremely important because the reaction is quite exothermic. A preferred procedure is the addition of approximately half to two-thirds of the required total of peracetic acid solution to a dispersion of mercury metal in acetic acid to obtain the mercurous salt, followed by addition of the remainder of the peracetic acid to form the mercuric salt. The exothermic reaction is carried to completion by heating slowly and cautiously to reflux. This also serves to decompose excess peracid. It is possible and perhaps more economical to use 50% hydrogen peroxide instead of peracetic acid, but the reaction does not go quite as smoothly. 

The reactivity of mercury salts is a fimction of both the solvent and the counterion in the mercury salt. Mercuric chloride, for example, is unreactive, and mercuric acetate is usually used. When higher reactivity is required, salts of electronegatively substituted carboxylic acids such as mercuric trifiuoroacetate can be used. Mercuric nitrate and mercuric perchlorate are also highly reactive. Soft anions reduce the reactivity of the Hg " son by coordination, which reduces the electrophilicity of the cation. The harder oxygen anions leave the mercuric ion in a more reactive state. Organomercury compounds have a number of valuable synthetic applications, and these will be discussed in Chapter 8 of Part B. 

Redox titrants (mainly in acetic acid) are bromine, iodine monochloride, chlorine dioxide, iodine (for Karl Fischer reagent based on a methanolic solution of iodine and S02 with pyridine, and the alternatives, methyl-Cellosolve instead of methanol, or sodium acetate instead of pyridine (see pp. 204-205), and other oxidants, mostly compounds of metals of high valency such as potassium permanganate, chromic acid, lead(IV) or mercury(II) acetate or cerium(IV) salts reductants include sodium dithionate, pyrocatechol and oxalic acid, and compounds of metals at low valency such as iron(II) perchlorate, tin(II) chloride, vanadyl acetate, arsenic(IV) or titanium(III) chloride and chromium(II) chloride. 

Syntheses are limited to mercuric salts of weak acids (2,110). Generally, increasing the length of the straight alkyl chain decreases the extent of decarboxylation (e.g., Ref. 133). Electron-withdrawing substituents suppress decarboxylation. For example, mercurials are not formed with Me02C, Cl, and Me(CH2)nO substituents on the a carbon (137,148,149), but some decarboxylation occurs with these on the j8 carbon (135-137). Chain decarboxylation predominated in reactions in benzene, butyric acid [R = Me(CH2)2] (150), or acetic acid (R = Me) (124). The chain reaction was also observed for R = Me(CH2)2 in the absence of solvent and in ethylacetate or heptane solution, but in these media the radical displacement reaction was dominant (2,150). When benzene was used as solvent... 

The cold filtrates (solutions of monochlorourea) are transferred to a 3-1. two-necked flask immersed in an ice-salt bath. The flask is equipped with a slip- or mercury-sealed mechanical stirrer and an efficient reflux condenser. To the flask are added 500 g. of ice, 100 ml. of glacial acetic acid, and 136 g. (2.0 moles) of cyclopentene (or 1.43 times the weight increase in grams during introduction of the chlorine) (Note 4). Mechanical stirring is begun, and is continued while the flask is kept packed in ice until the cyclopentene (the top layer) disappears and a heavy oil settles to the bottom (Note 5). 

Mercury salt, flocculent red ppt was prepd by adding while stirring an aq soln of Hg acetate (1 mol) to a hot aq soln of N,NP -dichloro-azodicarboxamidine with NH3 added from time to time to keep the mixt just si acid at the start of the reaction si alkaline towards the end... 

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