6PPD, N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, with CAS number 793-24-8, serves as an antioxidant and antiozonant in tires, playing a crucial safety role by protecting tire components from erosion by ozone, oxygen, and other harmful factors. However, as tires wear against the road surface during driving, particles containing 6PPD are released, which can transform into the highly toxic 6PPD-quinone upon reaction with ozone, posing risks to aquatic life.
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