Compared with normal iron oxide black, water soluble iron oxide black can be dissolved in water, which is not to be grinded. The normal iron oxide black is the compound of iron monoixde and iron oxide, it can not be dissolved in water, and solvents such as aqueous alkali,ethanol, aether etc., only be dissolved in acid solutions. Epsilon's water soluble iron oxide black is very easy dissolved and most deep black, it is ten times black than normal iron oxide black. It is mainly used in constructiono areas i.e. bricks, concrete, paving roads, tile etc..
