四氧化锰

Description

Manganese(IV) oxide · CAS 1313-13-9 · MnO2. UNII TF219GU161. Density: 5.0 g/cm³; Density: 5.08 @25 °C; Decomposition: 535 °C.

Identification

CAS Registry Number	1313-13-9
PubChem CID	14801
Molecular formula	MnO2
IUPAC name	dioxomanganese
UNII (FDA)	TF219GU161

Computed Descriptors

Molecular Weight	86.937
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	86.927872
Monoisotopic Mass	86.927872
Topological Polar Surface Area	34.1
Heavy Atom Count	3
Formal Charge	0
Complexity	18.3

Physical & Chemical Properties

Density	5.0 g/cm³
Density	5.08 @25 °C
Decomposition	535 °C

Physical description & handling notes

• Dry Powder; Large Crystals; CBI; Large Crystals; Other Solid; Wet Solid; Dry Powder
• Natural form is steel-gray when in lumps and black when powdered; The artificial precipitate in a brownish-black solid; Both usually have some manganese oxide and water; [Merck Index] Brown odorless powder; [Alfa Aesar MSDS]
• BLACK-TO-BROWN POWDER.
• Solubility in water: none

Regulatory Status

GHS notification summary	0.8% (11 / 1416)

GHS Hazard Classification

GHS notification summary	0.8% (11 / 1416)
Reported hazard statements	H302, H332, H370, H372

Documented Uses

• Naturally occurs as the mineral pyrolusite, which is the source of manganese and all its compounds; Used to make manganese steel, as an oxidizer, in dry cell alkaline batteries, for making amethyst glass, decolorizing glass, and painting on porcelain, faience, and majolica; The precipitate is used in electrotechnics, pigments, browning gun barrels, as drier for paints and varnishes, and for printing and dyeing textiles; [Merck Index] See Manganese.
• Steel Producing [Category: Industry]
• Battery Manufacturing [Category: Industry]
• Painting (Pigments, Binders, and Biocides) [Category: Paint]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• Glass Manufacturing [Category: Industry]

Synonyms

Manganese dioxide; Manganese peroxide; Manganese Black; Manganese binoxide; Mangandioxid; Manganese superoxide; Black manganese oxide; Cement Black; BOG manganese; Pyrolusite Brown; Mangaanbioxyde; Mangaandioxyde; Braunstein; Bruinsteen; Manganese (bioxyd de); Manganese (dioxyde de)

Frequently Asked Questions

What are the CAS number and molecular formula of Manganese(IV) oxide?

CAS 1313-13-9; molecular formula MnO2; molecular weight — g/mol.

What other names is Manganese(IV) oxide known by?

Manganese dioxide, Manganese peroxide, Manganese Black, Manganese binoxide, Mangandioxid, Manganese superoxide.

Is Manganese(IV) oxide classified as hazardous?

0.8% of GHS notifications report no hazard classification (11 of 1416).

What are the key physical properties of Manganese(IV) oxide?

Density: 5.0 g/cm³; Density: 5.08 @25 °C; Decomposition: 535 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.