
Manganese sesquioxide
Alias:; Manganese (III) oxide ; Dimanganese trioxide; Manganese oxide
CAS Number: 1317-34-6
EINECS number: 215-264-4
Molecular formula: Mn2O3
Molecular weight: 157.8743
Grade: Electronic grade
Assay: 98%
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Nature: black crystal. Relative density of 4.50. Insoluble in water, acetic acid, soluble in cold hydrochloric acid, hot nitric acid and hot sulfuric acid. 1080 ° C deoxidation. Fine dust flammable. When hydrogen is reduced, manganese oxide is produced at 230 ° C, and manganese oxide (MnO) is formed at 300 ° C or higher. By the manganese dioxide in the air heated to 530 ~ 940 ℃ in the system. Trihydrate manganese hydrate oxide called manganese brown, used as cloth printing and dyeing agent. Is the preparation of manganese compounds and raw materials and intermediates
Index | Standard |
锰 (Mn) % ≥ | 70 |
二氧化硅 (SiO2)% ≤ | 0.005 |
水(H2O)% ≤ | 0.5 |
氧化钙(CaO)% ≤ | 0.001 |
钾 (K)% ≤ | 0.001 |
钠(Na)% ≤ | 0.001 |
铅(Pb)% ≤ | 0.002 |
磷(P)% ≤ | 0.5 |
硫(S)% ≤ | 0.5 |
硒(Se)% ≤ | 0.005 |
Store in a dry, ventilated warehouse. Pay attention to moisture, do not mix with the acid and oxidants. In case of fire, water is available. Sand and fire extinguishers
Toxicity and protective measures:
manganese can cause severe central nervous system disease, severe cases may occur Parkinson’s disease. On the brain striatum globus pallidus caused serious damage to the liver, kidney and myocardium degeneration changes. Production of dust in the use of dust masks, the concentration is large, the use of industrial filters with filters. Production process, should prevent dust, smoke excretion, the excretion of manganese dust, with wet cleaning workplace.
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