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Satyam Pharma Chem Pvt Ltd
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| Products Intro: |
Product Name:Maganous hydroxide
CAS:18933-05-6
Purity:99% Package:1 kg,5 kg, 10 kg,25kg and 1 MT
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| Company Name: |
Hubei Shishun Biotechnology Co. Ltd
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| Products Intro: |
Product Name:manganese,dihydrate
CAS:18933-05-6
Purity:99% HPLC Package:25KG;200KG;5KG;1KG;1T
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| | Manganses Hydroxide Chemical Properties |
| Melting point | decomposes [HAW93] | | density | 3.260 | | form | pink hexagonal crystals | | color | pink hexagonal, hexane crystals, crystalline | | Water Solubility | mol/L solution H2O: 3.6×10?5 (25°C) [KRU93] |
| | Manganses Hydroxide Usage And Synthesis |
| Preparation | Manganese(II) hydroxide is obtained as a white precipitate by adding a solution of sodium or potassium hydroxide to a solution of manganese(II) salt, such as manganese(II) chloride:
Mn2+ + 2OH¯ → Mn(OH)2
The white precipitate rapidly turns brownish-pink in air. The reaction does not occur with ammonia in the presence of ammonium salt.
The hydroxide also is found in nature as mineral pyrochroite in the form of white transparent leaflets. The white leaflets turn pink on exposure to air.
| | Reactions | Manganese(II) hydroxide is a base exhibiting weak amphoteric behavior. It reacts with acids forming the corresponding manganese(II) salt:
Mn(OH)2 + 2KOH → K2Mn(OH)4
The hydroxide is rapidly oxidized in air forming manganese(III) oxide, Mn2O3.
| | References | Handbook of Inorganic Chemicals
| | Chemical Properties | white to pink crystal(s); hardness is 2.5 Mohs [HAW93] |
| | Manganses Hydroxide Preparation Products And Raw materials |
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