why is iron hydroxide insoluble
This explains the formation of rust when insoluble iron is exposed to the atmosphere, lowering the pH in the water and oxidizing the iron. Bacteria can produce insoluble iron compounds like ferric hydroxide or iron carbonate as a waste product, which can end up as film on fixtures and appliances.nsoluble, commonly called red water iron, is immediately apparent upon pouring a glass. The water can appear rusty or yellowish in color. This happens because the iron is being oxidized by the atmosphere and forming ferric hydroxide-also known as rust. Soluble iron is also called clear water iron.