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6PPD
Chemical compound
6PPD is an organic chemical widely used as stabilising additive (or antidegradant) in rubbers, such as natural rubber, styrene-butadiene and butyl rubber; all of which are common in vehicle tires. Although it is an effective antioxidant, it is primarily used because of its excellent antiozonant performance.
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6PPD is an organic chemical widely used as stabilising additive (or antidegradant) in rubbers, such as natural rubber, styrene-butadiene and butyl rubber; all of which are common in vehicle tires. Although it is an effective antioxidant, it is primarily used because of its excellent antiozonant performance. It is one of several antiozonants based around p-phenylenediamine. It has been used in rubber since the late 1970s, but has been the subject of increasing scrutiny since 2021, when it was determined that its oxidation product (6PPD-Q) causes pre-spawn mortality in coho salmon.
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