[{"from": "human", "value": "Please give me some details about this molecule. [C][=C][C][=Branch2][Ring1][Branch2][=C][Branch2][Ring1][Ring1][C][=C][Ring1][=Branch1][C][=C][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][Cl][Cl][N]"}, {"from": "gpt", "value": "The molecule is a gray-to-purple colored crystalline solid. It changes from a solid to a gas very slowly. 3,3'-Dichlorobenzidine salt is the major form in actual use. It is a stable, off-white colored crystalline solid that does not evaporate. Neither 3,3'-dichlorobenzidine nor its salt are found naturally in the environment. They are manufactured for pigments for printing inks, textiles, plastics and enamels, paint, leather, and rubber."}]