MO4232 is a synthetic black magnetic iron oxide (magnetite, ferrosoferric oxide) specifically designed for MICR (Magnetic Ink Character Recognition) applications.

MO4232 is acicular in shape with medium oil absorption and excellent magnetic properties. MO4232 is long established as a workhorse of the magnetic ink and magnetic transfer ribbon industries, and is used in specialty high-quality toner requiring high remanent magnetization. MO4232 complies with the RoHS regulations.