Manganese, tricarbonyl methylcyclopenta dienyl

Manganese, tricarbonyl methylcyclopenta dienyl, 86 Manufacturers Association of Israel - MAI Manufacturers Chemicals L.P, 237, 249 MANZATE , maneb, 86 Maranda Mining Company (Pty) Ltd., 199 Marathon Ashland Petroleum LLC, 237 Marble, 86... 

Manganese will become an element of concern as methylcyclopenta-dienyl manganese tricarbonyl (MMT) usage goes up. MMT is predicted to be in 30% of automobile gasoline by the end of 1978. A definitive study of MMT in atmospheres at, near, and removed from use sites has yet to be performed. 

Whenever the direct technique is applied to known compounds, the validity must be established. For example, the additive methylcyclopenta-dienyl manganese tricarbonyl may be too stable to be analyzed by direct HVAA without pre-atomization losses. Some work has suggested that losses of this compound occur even in acid digestion procedures (4). No studies were made on this compound as part of the Project. 

Transition metal organometallic compounds such as manganese, chromium, and iron carbonyls by the intraperitoneal route, and nickel by inhalation (mice) or intravenously (rats), induced selective necrosis of the Clara cells (Haschek et al. 1982). The pulmonary toxicity of methylcyclopenta-dienyl manganese tricarbonyl, representative of this group of compounds, was enhanced by pretreatment with piperonyl butoxide, an inhibitor of the mixed-function oxidase system. 

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