Manganate , sodium

The vendor claims that using ozone to treat a 1-acre site contaminated with 1 part per million (ppm) trichloroethene (TCE) would cost approximately 269,000. This estimate assumes 20 ft of thickness. Treating the same site using alternative oxidants would be less expensive. Hydrogen peroxide would cost about 201,000, sodium manganate would cost about 187,000, and potassium manganate would cost about 136,000 (D203816, p. 6). 

Preparation of Sodium Manganate(VI) by the Solid-Phase Reaction of Manganese Dioxide with Sodium Peroxide. Pour 15-... 

The reaction has proceeded to the end if a sample of the formed dark green, almost black, sodium manganate dissolves completely in water. 

Permanganate. Sodium permanganate, permanganate of soda, [CAS 10101-50-5], NaMn0 3H20. purple solid, soluble, formed by oxidation of acidified sodium manganate solution with chlorine, and then evaporating. Used (1) as disinfectant and bactericide, (2) in medicine. 

Sodium carbonate bead tests The sodium carbonate bead is prepared by fusing a small quantity of sodium carbonate on a platinum wire loop in the Bunsen flame a white, opaque head is produced. If this is moistened, dipped into a little potassium nitrate and then into a small quantity of a manganese compound, and the whole heated in the oxidizing flame, a green bead of sodium manganate is formed ... 

Sodium manganate and permanganate.—The modes of preparation and the properties of sodium manganate and permanganate are given in Vol. VIII. 

Preparation of Manganese Oxalate (238). 4. Preparation of Manganese(II) Oxide (238). 5. Preparation of Sodium Manga-nate(V) (239). 6. Preparation of Sodium Manganate(VI) by the Solid-Phase Reaction of Manganese Dioxide with Sodium Peroxide (239). 7. Preparation of Potassium Permanganate by the... 

Derivation Sodium manganate is dissolved in water and chlorine or ozone passed in. The solution is concentrated and crystallized. 

Sodium Manganate—Na,bl nO -t- 10 Aq—164 -f 180—faintly colored crystals, forming a green solution with H,0—Condy s green diein feciant. 

Permanganates can be made by electrolytic oxidation in two ways. In one method an anode of manganese or a manganese alloy is used, with potassium carbonate solution as the electrolyte in the second method a potassium or sodium manganate solution, obtained by alkaline oxidation of manganese dioxide, is oxidized to permanganate at an iron anode. The second method is the one usually used commercially. Both methods are illustrated in this experiment. 

Condensation of sodium manganate 23 with bromide 20 is extremely sensitive to the purity of reagents and tiie ratios of anomeric products obtained (22 vs... 

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