| Agent Name |
Manganese tetroxide |
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| CAS Number |
1317-35-7 |
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| Formula |
Mn3-O4 |
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| Major Category |
Metals |
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| Synonyms |
Manganese oxide; Manganomanganic oxide; Trimanganese tetraoxide; Trimanganese tetroxide; [NIOSH] |
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| Category |
Metals, Inorganic Compounds |
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| Description |
Brownish-black powder. [Note: Fumes are generated whenever manganese oxides are heated strongly in air.] [NIOSH] |
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| Sources/Uses |
Generated in ferromanganese fume during the pouring of molten ferromanganese alloys; [ACGIH] |
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| Comments |
Pneumonitis has been observed in animals exposed to high concentrations. Chronic manganese poisoning has been reported in workers in steel production exposed to ferromanganese dust or fumes in crushing/screening and pouring/casting operations. [ACGIH] There is limited positive data that manganese can cause decreased libido and impotence in humans and limited positive and negative data that it can cause testicular damage in animals. [ATSDR Case Studies # 29] |
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| Exposure Assessment |
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| Skin Designation (ACGIH) |
No |
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| Bioaccumulates |
Yes |
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| TLV (ACGIH) |
0.2 mg/m3, as Mn |
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| PEL (OSHA) | Ceiling(OSHA) = 5 mg/m3, as Mn |
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| MAK |
0.5 mg/m3, as Mn, inhalable fraction |
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| Adverse Effects |
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| Toxic Pneumonitis |
Yes |
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| Neurotoxin |
Parkinson's Syndrome |
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| Reproductive Toxin |
Yes |
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| Links to Other NLM Databases |
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| Health Studies |
Human Health Effects from Hazardous Substances Data Bank: MANGANOUS OXIDE
|
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