应用
It 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.

基本信息

MDL
MFCD00003463

EINECS
215-202-6

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

Merck
14,5730

GHS危害和防范说明

GHS符号

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.

安全信息

危险类别
20/22
Harmful by inhalation and if swallowed.

安全等级
25
Avoid contact with eyes.

欧盟危险品标志

RTECS
OP0350000

TSCA
是