Molecular formula :
nature : Fe (OH) 3 brown flocculation and sedimentation. Density 3.4-3.9. Heating gradual decomposition of iron oxide derived. Do not dissolve in water, ethanol and ether, dissolved in acid. In the acid solubility products made with the length of time determined, the new system of acid-soluble inorganic and organic acids, placed some time, it is hard to dissolve. The system for paint, drugs, and as such arsenic antidote. By ferric chloride or ferric nitrate solution increases ammonia solution and precipitation in the system.
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