Title: Manganese Oxide
CAS Registry Number: 1317-35-7
Additional Names: Manganomanganic oxide; manganese tetroxide
Molecular Formula: Mn3O4
Molecular Weight: 228.81
Percent Composition: Mn 72.03%, O 27.97%
Literature References: Occurs in nature as the mineral hausmannite. Prepn: Moore et al., J. Am. Chem. Soc. 72, 856 (1950).
Properties: Brownish-black powder. d 4.7. Insol in water. Sol in HCl with evolution of chlorine.
Density: d 4.7
CAUTION: Potential symptoms of overexposure are asthenia, insomnia, mental confusion; low back pain, vomiting, malaise, fatigue; kidney damage; pneumonitis. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 192. |