| Agent Name |
Manganese cyclopentadienyl tricarbonyl |
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| CAS Number |
12079-65-1 |
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| Formula |
C8-H5-Mn-O3 |
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| Major Category |
Metals |
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| Synonyms |
Cyclopentadienylmanganese tricarbonyl; Cyclopentadienyl tricarbonyl manganese; MCT; [NIOSH] |
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| Category |
Metals, Organic Compounds |
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| Description |
Yellow, crystalline solid with a characteristic odor. [Note: An antiknock additive for gasoline. May be found in an oil & gaseous solution.] [NIOSH] |
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| Sources/Uses |
Used as an anti-knock agent in unleaded gasoline--this use not permitted in the U.S.A. since 1981; [ACGIH] |
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| Comments |
Injected doses of 20 mg/kg cause convulsions and pulmonary edema in rats. MCT was estimated to be twice as toxic to the lung as MMT (methylcyclopentadienyl manganese tricarbonyl). In chronic inhalation studies, rats showed no outward signs of disease during the exposure period (averaging 1 mg/m3 for 4 hours/day for 11 months), but increased excitability of the nervous system was detected with electrical studies after 7 months of exposure. [ACGIH] |
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| Exposure Assessment |
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| Skin Designation (ACGIH) |
Yes |
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| Bioaccumulates |
Yes |
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| TLV (ACGIH) |
0.1 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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| Explanatory Notes |
Sublimes at 75-77 deg C; [CAMEO] |
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| Adverse Effects |
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| Neurotoxin |
Other CNS Neurotoxin |
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| Links to Other NLM Databases |
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| Health Studies |
Human Health Effects from Hazardous Substances Data Bank: MANGANESE CYCLOPENTADIENYLTRICARBONYL
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