Maciejasz Index (MI)
Maciejasz Index (MI) : This index is obtained as a result of a test for the reactivity to oxygen, particularly to peroxides. This test is suitable for verify the trend or susceptibility to self-ignition of organic substances. IM, is an inverse function of the time, t, in minutes, necessary for the sample to rise its temperature 65 K from the initial ambient temperature, when reacts with the oxygen peroxide