PPDA is a white to light purple red crystallịch thi đấu bóng đá trực tuyến, It is the simplest aromatic diamine. Its alkalinity is weaker than ammonia, slightly stronger than aniline, and it is easily to be oxidized. The reaction of PPDA is mainly involves the reaction of amino groups, and the reaction of benzene rings

CHDA (Cyclohexane-1kèo bóng đá hôm nay,4-diamine，cis/trans Mixture) is a kind of aliphatic diamine, which is a colorless or yellow solid-liquid mixture at room temperature