This excerpt taken from the CHNR 20-F filed Jun 29, 2009.
Micaceous Iron Oxide
Micaceous Iron Oxide (MIO) (Chemical compound symbol Fe2O3) is a crystalline form of iron oxide that differs from the more familiar red, yellow, and brown forms of iron oxide pigments. Like the other forms of iron oxide, MIO is a very inert material. It is insoluble in water, organic solvents, and alkalis, and is only slightly soluble in strong acids at elevated temperatures. It is un-reactive to most chemicals and is heat stable up to its melting point of over 1,000 degrees centigrade and is non-toxic, non-oxidizing, non-corrosive, and non-flammable. The use of coatings containing MIO pigments is becoming increasingly popular in manufacturing and industries and products such as durable antiseptic coating paint, primer and finish paint on steel structures.