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Manganese dioxide

Description Chemical Properties Uses Toxicity evaluation Resources
Manganese dioxide
Manganese dioxide structure
Chemical Name:
Manganese dioxide
MnO2;Mangoxe;c.i.77728;PYROLUSITE;Braunstein;Bruinsteen;C.I. 77728;cementblack;bogmanganese;Cement black
Molecular Formula:
Formula Weight:
MOL File:

Manganese dioxide Properties

Melting point:
535 °C (dec.) (lit.)
storage temp. 
Store below +30°C.
<0.001g/l insoluble
Specific Gravity
Water Solubility 
Stable. Incompatible with strong acids, strong reducing agents, organic materials.
CAS DataBase Reference
1313-13-9(CAS DataBase Reference)
EWG's Food Scores
NIST Chemistry Reference
manganese(IV) dioxide(1313-13-9)
EPA Substance Registry System
Manganese dioxide (1313-13-9)
  • Risk and Safety Statements
Signal word  Warning
Hazard statements  H302-H332-H302+H332
Precautionary statements  P261-P264-P270-P301+P312a-P304+P340-P501a
Hazard Codes  Xn
Risk Statements  20/22
Safety Statements  25
RIDADR  3137
WGK Germany  1
RTECS  OP0350000
HS Code  2820 10 00
PackingGroup  III
Toxicity LD50 orally in rats: >40 mmole/kg (Holbrook)
NFPA 704
2 0

Manganese dioxide price More Price(35)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 8.05958 Manganese(IV) oxide (precipitated active) for synthesis 1313-13-9 100 g $36.81 2021-03-22 Buy
Sigma-Aldrich 217646 Manganese(IV) oxide activated, ~85%, <10 μm 1313-13-9 5g $43.5 2021-03-22 Buy
Sigma-Aldrich 8.05958 Manganese(IV) oxide (precipitated active) for synthesis 1313-13-9 1 kg $75.94 2021-03-22 Buy
Sigma-Aldrich 1.05957 Manganese(IV) oxide powder EMPLURA? 1313-13-9 1 kg $193.32 2021-03-22 Buy
Sigma-Aldrich 217646 Manganese(IV) oxide activated, ~85%, <10 μm 1313-13-9 12kg $656 2021-03-22 Buy

Manganese dioxide Chemical Properties,Uses,Production


Manganese dioxide, mainly used as a depolarizer in dry cell batteries, is the most important non-metallic form of manganese. In either traditional alkaline and rechargeable battery cells, Manganese dioxide takes in electrons through a redox reaction, becoming Manganese III oxide. It also has applications in lithium-ion technologies.
It is also the primary precursor to ferromanganese, an alloy of iron used for its lower melting point and low cost.
It is black in appearance and used to color glass and ceramics, as well as for cave art and possibly body paint in prehistorical eras. Further uses include the purification of drinking water, and production of pure oxygen and chlorine.

Chemical Properties

Manganese dioxide ( MnO2 ) , known as pyrolusite when found in nature , is the most plentiful of all the manganese compounds. MnO2 is Iron-black to dark steel-gray or bluish mineral; black or bluish-black streak; metallic or dull luster. Soluble in hydrochloric acid.
Manganese dioxide
Manganese dioxide is an important component in batteries. It is also used in glassmaking to remove the green fint caused by iron impurities.


The chemistry of manganese(III) is not extensive, and in the higher oxidation states manganese dioxide and potassium permanganate are the most important compounds.
Manganese dioxide is also used in the manufacture of glass to bleach the colour of any iron present. If excess manganese dioxide is added, a pink coloration can be produced in the glass and if a large excess is present it will appear black.
Other uses of manganese dioxide include its use as an oxidizing agent in organic chemistry and as an oxidizing agent in safety matches, fireworks and flares. It is also an effective adsorbent for hydrogen sulphide and is also used to colour ceramics.

Toxicity evaluation

Inhalation exposure to high concentrations of manganese dusts (specifically manganese dioxide [MnO2] and manganese tetroxide [Mn3O4]) can cause an inflammatory response in the lung, which, over time, can result in impaired lung function. Lung toxicity is manifested as an increased susceptibility to infections such as bronchitis and can result in manganic pneumonia. Pneumonia has also been observed following acute inhalation exposures to particulates containing other metals. Thus, this effect might be characteristic of inhalable particulate matter and might not depend solely on the manganese content of the particle.


Chemical Properties

Manganese dioxide is a black crystalline solid or powder.

Physical properties

Black tetragonal crystals; density 5.08 g/cm3; Moh’s hardness 6.3; decomposes at 535°C; insoluble in water.


Manganese(IV) oxide is the most important ore of manganese from which the metal is mostly manufactured. The oxide occurs in nature as the mineral pyrolusite as heavy gray lumps, or black when powdered.
The mineral is used to produce manganese metal, most manganese salts, and also manganese steel and other alloys. The metallurgical applications of manganese(IV) oxide mainly involve making ferromanganese and special manganese alloys. Another important application of manganese(IV) oxide is in manufacturing dry-cell batteries and alkaline cells. The oxide also is a colorant in brick, tile, porcelain and glass; a drier for paints and varnishes; a 552 MANGANESE(IV) OXIDEpreparation for printing and dyeing textiles; a curing agent for polysulfide rubbers; an adsorbent for hydrogen sulfide and sulfur dioxide; an oxidizing agent in many organic syntheses such as quinone and hydroquinone; and a catalyst in laboratory preparation of oxygen from potassium chlorate. Manganese(IV) oxide also is used to make welding rods and fluxes, and ceramic magnets (ferrites); and is an additive to fertilizers.


The mineral is the source of manganese and all its Compounds; largely used in manufacture of manganese steel; oxidizer; in alkaline batteries (dry cells); for making amethyst glass, decolorizing glass; painting on porcelain, faience and majolica. The ppt is used in electrotechnics, pigments, browning gun barrels, drier for paints and varnishes, printing and dyeing textiles.


Pure manganese(IV) oxide (precipitate form) may be prepared by reducing permanganate ion with a manganous salt:
2KMnO4 + 3MnSO4 + 2H2O → 5MnO2 + K2SO4 + 2H2SO4
Manganese(IV) oxide can also be precipitated by oxidation of a manganese(II) salt using an oxidizing agent such as hypochlorite or peroxydisulphate:
Mn2+ + S2O82– + 2H2O → MnO2 + 2SO42– + 4H+
Manganese(IV) oxide may also be made by thermal decomposition of manganese(II) nitrate; or from roasting manganese(II) carbonate in air: Mn(NO3)2 → MnO2 + 2NO2
MnCO3 + ½ O2 → MnO2 + CO2
A highly active gamma-MnO2 can be produced by treating manganese(III) oxide with hot sulfuric acid:
Mn2O3 + H2SO4 → MnO2 + MnSO4 + H2O
Mn2O3 is derived from pyrolusite by heating the mineral at 600–800°C or reducing with powdered coal at 300°C.

Reactivity Profile

The stability of manganese dioxide is due primarily to its insolubility. It is, however, readily attacked by reducing agents in acid solution, for example oxidizing concentrated hydrochloric acid to chlorine. In hot concentrated alkali it dissolves to give a purple solution which contains an equimolar mixture of trivalent manganese, probably as (Mn(OH)6)3- and manganate(V), (MnO4)3-. Manganese dioxide is also one of the most active catalysts for the oxidation of carbon monoxide near room temperature.


Oxidizing agent, may ignite organic materials.

Industrial uses

Manganese dioxide (MnO2) is soluble in water and HNO3 and soluble in HCl. It occurs in nature as the blue-black mineral pyrolusite. In glass, manganese dioxide is used as a colorant and decolorizer.
The major use of manganese oxides is an ore of manganese for the manufacturing of steel; manganese serves to increase the hardness and decrease the brittleness of steel. Another important use of manganese oxides is as the cathode material of common zinc/carbon and alkaline batteries (such as flashlight batteries).

Safety Profile

Poison by intravenous and intratracheal routes. Moderately toxic by subcutaneous route. Experimental reproductive effects. A powerful oxidizer. Flammable by chemical reaction. It must not be heated or rubbed in contact with easily oxilzable matter. Violent thermite reaction when heated with aluminum. Potentially explosive reaction with hydrogen peroxide, peroxomonosulfuric acid, chlorates + heat, anilinium perchlorate. Ignition on contact with hydrogen sulfide. Violent reaction with oxidizers, potassium azide (when warmed), diboron tetrafluoride, Incandescent reaction with calcium hydride, chlorine trifluoride, rubidium acetylide (at 350℃). Vigorous reaction with hydroxylaminium chloride. Incompatible with H202, H2SO j, Naz02. Keep away from heat and flammable materials. See also MANGANESE COMPOUNDS.

Potential Exposure

Manganese dioxide is used as depolarizer for dry cell batteries, for production of manganese metal; as an oxidizing agent; laboratory reagent; and in making pyrotechnics and matches; in dry cell batteries.


UN1479 Oxidizing solid, n.o.s., Hazard Class: 5.1; Labels: 5.1-Oxidizer, Technical Name Required. UN3137 (powder) Oxidizing solid, flammable, Hazard Class: 5.1; Labels: 5.1-Oxidizer, 4.1 Flammable solid, Technical Name Required.


A powerful oxidizer. Incompatible with strong acids; reducing agents; combustible materials (such as fuel and clothing; organic materials. Mixtures with calcium hydride is a heat- and friction-sensitive explosive. Vigorous reaction with hydrogen sulfide, diboron tetrafluoride; calcium hydride; chlorine trifluoride; hydrogen peroxide; hydroxyaluminum chloride; anilinium perchlorate. Decomposes when heated above 553C producing manganese(III)oxide and oxygen, which increases fire hazard. Reacts violently with aluminum (thermite reaction), potassium azide; rubidium acetylide; in the presence of hea

Waste Disposal

Generators of waste (equal to or greater than 100 kg/mo) containing this contaminant, EPA hazardous waste number N450, must conform to USEPA regulations for storage, transportation, treatment, and disposal of waste. Dispose of waste material as hazardous waste using a licensed disposal contractor to an approved landfill. Dispose of contents and container to an approved waste disposal plant. Containers must be disposed of properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office. All federal, state, and local environmental regulations must be observed. Do not discharge into drains or sewers

Manganese dioxide Preparation Products And Raw materials

Raw materials

Preparation Products

Manganese dioxide Suppliers

Global( 357)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-66670886 China 21032 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 22607 55
career henan chemical co
+86-371-86658258 CHINA 29961 58
Hubei Jusheng Technology Co.,Ltd.
027-59599243 CHINA 28229 58
Xiamen AmoyChem Co., Ltd
+86 592-605 1114 CHINA 6369 58
Shanghai Longyu Biotechnology Co., Ltd.
+8615821988213 CHINA 2462 58
Chongqing Chemdad Co., Ltd
+86-13650506873 CHINA 37282 58
86-18523575427 CHINA 47496 58
Zhuozhou Wenxi import and Export Co., Ltd
+8613111626072 (WhatsApp)
Wechat: +8613111626072 Wickr me: waynehu CHINA 13187 58
Richest Group Ltd
18017061086 CHINA 5606 58

View Lastest Price from Manganese dioxide manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-10-20 Manganese dioxide
US $10.00 / KG 1KG 99.9% 100MT/Month Wuhan wingroup Pharmaceutical Co., Ltd
2021-07-24 Wholesale Electrolytic Manganese Dioxide for Zinc Carbon Battery
US $1300.00 / KG 500KG 99% 5000 Hebei Henghe Import and Export Trading Co. LTD
2021-07-13 Manganese dioxide
US $15.00-10.00 / KG 1KG 99%+ HPLC Monthly supply of 1 ton Zhuozhou Wenxi import and Export Co., Ltd

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