An organic compound containing two phenyl groups attached to a guanidine core, used as a rubber accelerator and vulcanizing agent.
From di- (two) + phenyl (benzene ring) + guanidine (a basic nitrogen-containing structure from guano/bird droppings, which was the original source). Synthesized in the late 1800s when chemists learned to accelerate rubber vulcanization.
This compound transformed tire manufacturing—by speeding up vulcanization from days to hours, diphenylguanidine helped make affordable car tires possible, literally accelerating the automobile age.
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