malaysia antioxidant ippd chemical auxiliary agents export
malaysia antioxidant ippd chemical auxiliary agents export
malaysia antioxidant ippd chemical auxiliary agents export
malaysia antioxidant ippd chemical auxiliary agents export
malaysia antioxidant ippd chemical auxiliary agents export
  • Do substituted para phenylenediamine (PPD) antioxidants affect the environment?
  • Substituted para -phenylenediamine (PPD) antioxidants have been extensively used to retard oxidative degradation of tire rubber and were found to pervade multiple environmental compartments. However, there is a paucity of research on the environmental occurrences of their transformation products.
  • Are PPD antioxidants toxic?
  • An increasing number of studies have focused on the toxicity of these PPD antioxidants. (8−10,15,33) According to the European Chemical Agency, several of them were labeled as very toxic to aquatic life with long-lasting effects and harmful if swallowed and may cause an allergic skin reaction.
  • What are antioxidants & TPS?
  • Antioxidants are widely used to improve the performance of rubber, and their production, especially 6PPD, is annually maintained at a high level . Amine antioxidants and TPs have been generally detected in the environment, especially in water, air, and dust, indicating that they can be transported through the atmosphere and rivers.
  • Are PPDS ubiquitous in China?
  • Eight PPDs (6PPD, 7PPD, DPPD, IPPD, 77PD, CPPD, DTPD, DNPD) and six PPD-quinones (IPPD-quinone, CPPD-quinone, 6PPD-quinone, 77PD-quinone, DPPD-quinone, DTPD-quinone) were also detectable in PM 2.5 collected from three sites located in Taiyuan and Guangzhou, China . This indicated that atmospheric PPDs and PPD-quinones are ubiquitous in China.