Agent Name

Manganese dioxide

CAS Number

1313-13-9

Formula

Mn-O2

Major Category

Metals

Synonyms

BOG manganese; Black manganese oxide; Braunstein [German]; Bruinsteen [Dutch]; C.I. 77728; C.I. Pigment Black 14; C.I. Pigment Brown 8; Cement Black; Mangaanbioxyde [Dutch]; Mangaandioxyde [Dutch]; Mangandioxid [German]; Manganese (biossido di) [Italian]; Manganese (bioxyd de) [French]; Manganese (diossido di) [Italian]; Manganese (dioxyde de) [French]; Manganese Black; Manganese binoxide; Manganese dioxide; Manganese peroxide; Manganese superoxide; Manganese(IV) oxide; Pyrolusite Brown; Manganese dioxide, ore of Chapter 26; Manganese oxide (MnO2); [ChemIDplus]

Category

Manganese Compounds, Inorganic

Description

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]

Sources/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."

Comments

Inhalation of dust may cause diseases of the lungs (bronchitis and pneumonia) and CNS (manganism); [ICSC] A strong oxidizer; [Merck Index] Harmful by ingestion, inhalation; May cause irritation; [Alfa Aesar MSDS] See "Manganese" and linked occupational diseases.

Exposure Assessment
TLV (ACGIH)

0.02 mg/m3, as Mn (respirable fraction), 0.1 mg/m3, as Mn (inhalable fraction)

PEL (OSHA)

Ceiling(OSHA)=5 mg/m3, as Mn

MAK

0.2 mg/m3, as Mn (inhalable fraction), 0.02 mg/m3, as Mn (respirable fraction)

Explanatory Notes

mp = 995 deg F; VP = approximately zero; [CHEMINFO] For occupational exposure limits, see "Manganese."

Adverse Effects
Neurotoxin

Parkinson's Syndrome

Hepatotoxin

Hepatotoxin, Secondary

Links to Other NLM Databases
Health Studies

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Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: