Acid manganese

A hydroxy and an arylthio group can be added to a double bond by treatment with an aryl disulfide and lead tetraacetate in the presence of trifluoroacetic acid." Manganese and copper acetates have been used instead of Pb(OAc)4. ° Addition of the groups OH and RSO has been achieved by treatment of alkenes with O2 and a thiol (RSH)." Two RS groups were added, to give vie- dithiols, by treatment of the alkene with a disulfide RSSR and Bp3-etherate."° This reaction has been carried... [Pg.1055]

Other methods start from crude indanthrone, which is dissolved in sulfuric acid or oleum (sometimes mixed with organic solvents). The product may be precipitated with water. It is more advantageous to separate the precipitated crude pigment, to reslurry it in water, and to heat the resulting aqueous suspension in the presence of a cationic surfactant. Subsequent treatment of the sulfuric acid solution with nitric acid, manganese dioxide, or chromium trioxide is followed by transfer into a solution containing sodium sulfite or iron(II)sulfate. [Pg.515]

Manganese acetate tetrahydrate Acetic acid, manganese (2+ salt), tetrahydrate (8,9) (6156-78-1)... [Pg.153]

Iron and aluminum precipitate out when treated with ammonia and are removed by filtration. Other metals, such as copper, zinc, lead and arsenic are precipitated and removed as sulfides upon passing hydrogen sufide through the solution. Colloidal particles of metaUic sulfides and sulfur are removed by treatment with iron(ll) sulfide. The purified solution of manganese(ll) sulfate is then electrolyzed in an electrolytic cell using lead anode and HasteUoy or Type 316 stainless steel cathode, both of which are resistant to acid. Manganese is deposited on the cathode as a thin film. [Pg.541]

When heated with concentrated sulfuric acid, manganese(IV) oxide yields manganese(ll) sulfate, evolving oxygen ... [Pg.554]

Or with nitrous acid in the presence of nitric acid, manganese(ll) nitrate is formed ... [Pg.555]

A. J. Balard found that stannous oxide is oxidized to stannic oxide, and the latter is not altered by hypochlorous acid chromic oxide is oxidized to chromic acid manganese, nickel, cobalt, and lead oxides are also converted into peroxides by hypochlorous acid bismuth oxide and manganese dioxide are not altered by this acid. [Pg.275]

Basic Lead Metavanadate, 8Pb0.2V206.2H20 or Pb0.2Pb(V03)a. 2H20, is obtained as a yellow powder by the action of lead nitrate on an acid manganese vanadate.9... [Pg.70]

Gallic acid Manganese oxide, dioxide, peroxide, nitrate... [Pg.99]

As mentioned above, manganese peroxidase was unable to oxidize 2,7-dichloro-dibenzo-p-dioxin. Nevertheless, in the presence of polyunsaturated fatty acids, manganese peroxidase is able to form adducts with 2,7-dichlorodibenzo-p-dioxin [119]. [Pg.195]

When heated with concentrated sulphuric acid, manganese dioxide evolves oxygen, leaving a residue of manganese sulphate. The reaction takes place m two stages,3 namely ... [Pg.16]

If manganese(VI) oxide is treated with acids, manganese(II) ions are produced. With hot, concentrated sulphuric acid, the reaction... [Pg.269]

There are several theories behind the cause of hepatic encephalopathy. One of these is that the accumulation of toxins in the brain, particularly ammonia, is the cause. Ammonia is produced in the intestine and is usually metabolised in the liver to urea via the urea cycle. As a result of portosystemic shunting and reduced metabolism in the liver, ammonia serum levels rise as the transformation to urea is reduced. However, the validity of this theory is questionable as not all patients with signs of hepatic encephalopathy have raised serum ammonia levels. Another theory is that patients with hepatic encephalopathy have increased permeability of the blood-brain barrier, and hence the increased toxin levels permeate the brain more than usual, leading to altered neuropsychiatric function. There are also theories relating to increased levels of neurotransmitters, short-chain fatty acids, manganese and increased GABA-ergic transmission. [Pg.94]

There are numerous other examples of the synthesis of quinones employing reagents such as nitric acid, manganese dioxide, salcomine/02, silver oxide, " chromium oxidants, >2 -47... [Pg.355]

SYNS ACETIC ACID MANGANESE(II) SALT (2 1) DIACETYLMANGANESE MANGANESE(2+) ACETATE MANGANESE(II) ACETATE MANGANESE DIACETATE MANGANOUS ACETATE OCTAN MANGANATY (CZECH)... [Pg.857]

SYNS MANGANOUS SULFATE M N-GRO NCI-C61143 SORBA-SPRAY Mn SULFURIC ACID, MANGANESE(2+) SALT... [Pg.861]

SYNS MANGANESE(2+), TRIS(OCTAMETHYLDI-PHOSPHORAMIDE-Op,Op )-, (OC-6-11)-, DIPERCHLORATE PERCHLORIC ACID, MANGANESE(2+) SALT, compounded with 3 mols. of OCTAMETHYL-PYROPHOSPHORAMIDE... [Pg.1401]

ETHANEDIYLBISCARBAMODITHIOIC ACID, MANGANESE(2-h) SALT (1 1) see MAS500 N,N -1,2-ETHANEDIYLBIS(N-(CARBOXYMETHYL))GLYCINE see EIXOOO N,N -1,2-ETHANEDIYLBIS(N-... [Pg.1674]

DISODIUM SALT see DXD200 ETHYLENEBIS(DITHIOCARBAXnC ACID) MANGANESE SALT see MAS500 ETHYLENEBIS(DITHIOCARBAXnC ACID) MANGANOUS SALT see MAS500 N,N -ETHYLENE BIS(3-... [Pg.1680]

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