transformation products of tire rubber antioxidant 6ppd for sale
- Classification:Chemical Auxiliary Agent
- Purity:99%
- Type:Rubber chemicals
- Appearance:Greyish brown powder
- Softening point:80-100℃
- Application:Used in Tires,Industrial Rubber Products
- Production Capacity:10000 Kilogram/Kilograms per Day
- Package:As the client's request
effects of 6ppd rubber antioxidant revealed,n-(1,3-dimethylbutyl)N'-phenyl-p-phenylenediamine (6ppd) is widely used as an antioxidant in the rubber industry, which raised significant concerns due to its ozonized transformation product, 6ppd-quinone (6ppd-q), identified to be of acute toxicity on several aquatic species at environmentally relevant concentrations in recent years .
6ppd, a tire rubber antioxidant, poses substantial ecological risks because it can form a highly toxic quinone transformation product (tp), 6ppd-quinone (6ppd), during exposure to gas-phase ozone. important data gaps exist regarding the structures, reaction mechanisms, and environmental occurrence of tps from 6ppd ozonation.
Best Price Rubber Antioxidant 6PPD CAS No.: 793-24-8
the tire antioxidant and antiozonant, 6ppd, is added to extend the polymer rubber lifetime. following environmental exposure, 6ppd transforms to its highly toxic quinone form n -...
ozone resistance of three natural antioxidants in solution,the results revealed that two natural antioxidants, namely sa and α-tocopherol, closely matched the performance of 6ppd and could be promising candidates for replacing p-phenylenediamine antioxidants as environmentally friendly antiozonants in the future.
prospects for rambutan peel extract as natural antioxidant on
amine compounds such as n-(1,3-dimethylbutyl)N'-phenyl-p-phenylenediamine (6ppd) are more effective than the phenol-based compounds in protecting natural rubber from oxidation. however, amine compounds can cause greater discoloration and staining than phenol compounds.
untargeted metabolomic analysis reveals a time-course hepatic,the tire antioxidant 6ppd has garnered extensive attention due to its widespread presence in the environment and the harmful effects of its transformation products on aquatic organisms. 6ppd has been detected in airborne dust, and it can enter mammals through inhalation exposure.
transformation product formation upon heterogeneous ozonation
conversion of 6ppd to 6ppd-quinone (6ppd) a recently reported highly toxic tp was confirmed at a 9.7% molar yield for pure 6ppd and a 0.95% molar yield for 6ppd present within twps, representing likely minima over these time scales and conditions.
a nation-wide study for the occurrence of ppd antioxidants,the present study presents a snapshot for the distribution characteristics of ppds and 6ppd-q in road dusts of major cities in china. three kinds of antioxidants 6ppd, dnpd and dppd were the dominant ppds in sampled road dusts. as ozonation product of 6ppd, 6ppd-q had the highest proportion in most road dusts.
a tire industry perspective on 6ppd replacement: the challenge
to act like 6ppd, a drop-in substitute must: function as antiozonant and antioxidant to help prevent the degradation and cracking of rubber compounds (unsaturated elastomers) by protecting against ozone attack, oxidation, and heat aging.
transformation products of tire rubber antioxidant 6ppd for sale,6ppd, a tire rubber antioxidant, poses substantial ecological risks because it can form a highly toxic quinone transformation product (tp), 6ppd-quinone (6ppd), during exposure to gas-phase...
- Does 6PPD ozonation pose environmental risks?
- 6PPD, a tire rubber antioxidant, poses substantial ecological risks because it can form a highly toxic quinone transformation product (TP), 6PPD-quinone (6PPDQ), during exposure to gas-phase ozone. Important data gaps exist regarding the structures, reaction mechanisms, and environmental occurrence of TPs from 6PPD ozonation.
- 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 is the concentration of PPDS and 6ppd-q in urban trunk dust?
- The concentrations of total PPDs (ΣPPDs) and 6PPD-Q in urban trunk road dust samples were in the ranges of 7.90–727 and 3.00–349 ng/g, with median concentrations of 68 and 49 ng/g, respectively. 6PPD and 6PPD-Q are the dominant components in most road dusts.
- 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.
