Azordicarbonamide (AC or ADC) is the most popular chemical blowing agent. Generally, AC is orange to pale yellow,crystalline solid.Unlike a number of other chemical blowing agents, AC is self extinguishing when flame is removed. The decomposition residues are odorless,non-toxic,non-coloring and non-straining.The particle size and distribution can be controlled with widely different ranges. The particle size and distribution is one of the most significant factors