http://www.beretmall.com/product/detail.aspx?id=313335 飞世尔/Fisher_014340.09_二氧化锰_10g - 贝雷猫商品中心
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授权代理商二氧化锰_10g

10g

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数量: 1瓶起订,增量1瓶

Manganese(IV) oxide, activated, tech., Mn 58% min

化学性质
分子式: MnO2
分子量: 86.94
熔点: 535° dec.
密度: 5.026
灵敏度: Ambient temperatures.
形态: Powder
溶解性: Insoluble in water, nitric acid, sulfuric acid. Soluble in HCl. In presence of hydrogen peroxide or oxalic acid soluble in dilute HNO{3} and H{2}SO{4}
参考文献

Mild oxidizing agent. For reviews, see: Synthesis, 65, 133 (1976); J. Prakt. Chem./ Chem. Ztg.337, 75 (1995). See also M. Hudlicky, Oxidations in Organic Chemistry, ACS Monograph 186, Washington DC (1990).

Widely used for the selective oxidation of allylic and benzylic alcohols to aldehydes or ketones. See, e.g.: Org. Synth. Coll.7, 102 (1990); 9, 136 (1998).

For use as a co-oxidant, in combination with 1,4-benzoquinone, in the allylic oxidation of olefins, catalyzed by Palladium(II)­ acetate, 10516, see: Org. Synth. Coll.8, 5, 137 (1993).

应用
As an oxidizing agent, source of metallic manganese, decolorizing glass, painting porcelain, as an analytical reagentManganese(IV) oxide is used as an oxidizing agent in organic synthesis such as oxidation of allylic/benzylic alcohols, as a textile dye, as a reducing agent, and as a component of dry cell batteries such as zinc-carbon battery and alkaline battery. It is also used in making pigments for glasses and ceramics, and drier for paints. Further it is used in the manufacture of manganese steel and several manganese derivatives including potassium permanganate, a powerful versatile oxidant. Catalytic hydration of nitriles to amides by flowing through manganese dioxide has been reported. Manganese dioxide supported on inorganic oxide can be used for oxidation of methylamine through CWAO (Catalytic Wet Air Oxidation). It has high potential as highly efficient and robust material for water oxidation reaction (WORs).
备注
At temperatures above 550°C, manganese(IV) oxide forms manganese(III) oxide and oxygen. It can slightly stain the skin, which can be washed off with some rubbing.
其他参考资料:
Merck: 14,5730
GHS Hazard and Precautionary Statements
Hazard Statements : H302-H332
Harmful if swallowed.Harmful if inhaled.
Precautionary Statements : P261-P264-P270-P304+P340-P301+P312a-P501a
Avoid breathing dust/fume/gas/mist/vapours/spray.Wash thoroughly after handling.Do not eat, drink or smoke when using this product.IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing.IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing.Dispose of contents/container in accordance with local/regional/national/international regulations.


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