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CDC -NIOSH Pocket Guide W emical Hazards -Manganese compou 0 and fume (as... Page I of 3 <br /> Centers for Disease Control and Prevention <br /> Your OnOne Sowce for Credible Health Information <br /> September 2oo5 <br /> NIOSH Publication Number 2005-149 <br /> Search the Pocket Guide <br /> Enter search terms separated by spaces. <br /> ...........................................................I.................................................................I I................................................1.1-........................................................I.......................................................................-.......................................... <br /> Manganese compounds and fume (as Mn) <br /> .................................................................I....................--................................... ....................................................................................................................................................................................................................... <br /> synonyms&Trade Names Manganese metal: Colloidal manganese, Manganese-55 <br /> Synonyms of other compounds vary depending upon the specific manganese compound. <br /> CAS No. 7439-96-5 (metal) RTECS No. OOq275000 (;m;e;t;q;l) DOT ID&Guide <br /> Formula Mn(metal) Conversion IDLH 500 mg/M3(as <br /> Mn) <br /> See: 7439965 <br /> Exposure Limits Measurement Methods <br /> NIOSH REL *: TWA 1 Mg/M3 ST 3 Mg/M3 [*Note: Also see specific NIOSH Z3oot , <br /> listings for Manganese cyclopentadienyl tricarbonyl, Methyl L't a- <br /> cyclopentadienyl manganese tricarbonyl, and Manganese tetroxide.] OSHA <br /> t7 <br /> OSHA ID121 9 <br /> OSHA PEI. C 5 Mg/M3 [*Note: Also see specific listings for ID125 V <br /> Manganese cyclopentadienyl tricarbonyl and Methyl See: NMAM or OSHA <br /> cyclopentadienyl manganese tricarbonyl.] Methods Ey <br /> Physical Description A lustrous,brittle, silvery solid. <br /> Mme: 54.9 BP: 35640F MLT: 2271T Sol: Insoluble vP: o mmHg in NA <br /> (approx) <br /> Sp.Gr: 7.20 Fl.P: NA UEL: NA LEL: NA <br /> (metal) <br /> Metal: Combustible Solid <br /> Incompatibilities&Reactivities Oxidizers [Note: Will react with water or steam to produce <br /> hydrogen.] <br /> Exposure Routes inhalation, ingestion <br /> Symptoms Manganism; asthenia, insomnia, mental confusion; metal fume fever: dry throat, <br /> http://www.cdc.gov/niosh/npg/npgd0379.html 6/21/2010 <br />